PDF-Formulare in C#: Erstellen, Ausfüllen und Verarbeiten interaktiver Formulare

Imports IronPdf

IronPdf.License.LicenseKey = "KEY"

Imports IronPdf

IronPdf.License.LicenseKey = "KEY"

Imports IronPdf

' Load an existing PDF form document
Dim pdfForm As PdfDocument = PdfDocument.FromFile("application-form.pdf")

' Access the form object and iterate through all fields
For Each field In pdfForm.Form
    ' Access field properties: field.Name, field.Type, field.Value, field.ReadOnly
Next

Imports IronPdf

' Load an existing PDF form document
Dim pdfForm As PdfDocument = PdfDocument.FromFile("application-form.pdf")

' Access the form object and iterate through all fields
For Each field In pdfForm.Form
    ' Access field properties: field.Name, field.Type, field.Value, field.ReadOnly
Next

Imports IronPdf
Imports System

Dim pdfForm As PdfDocument = PdfDocument.FromFile("employee-onboarding.pdf")

' Find specific fields by name - use try-catch for fields that may not exist
Try
    Dim firstNameField = pdfForm.Form.FindFormField("firstName")
    ' Use firstNameField.Value to get or set the field value
Catch ex As Exception
    ' Field not found in this document
End Try

' For fields you know exist, you can access them directly
Dim lastNameField = pdfForm.Form.FindFormField("lastName")
Dim departmentField = pdfForm.Form.FindFormField("department")

Imports IronPdf
Imports System

Dim pdfForm As PdfDocument = PdfDocument.FromFile("employee-onboarding.pdf")

' Find specific fields by name - use try-catch for fields that may not exist
Try
    Dim firstNameField = pdfForm.Form.FindFormField("firstName")
    ' Use firstNameField.Value to get or set the field value
Catch ex As Exception
    ' Field not found in this document
End Try

' For fields you know exist, you can access them directly
Dim lastNameField = pdfForm.Form.FindFormField("lastName")
Dim departmentField = pdfForm.Form.FindFormField("department")

Imports IronPdf

' Load the form document
Dim pdf As PdfDocument = PdfDocument.FromFile("customer-registration.pdf")

' Fill text fields with customer information
pdf.Form.FindFormField("fullName").Value = "Sarah Johnson"
pdf.Form.FindFormField("email").Value = "sarah.johnson@example.com"
pdf.Form.FindFormField("phone").Value = "(555) 123-4567"
pdf.Form.FindFormField("address").Value = "742 Evergreen Terrace" & vbCrLf & "Springfield, IL 62701"

' Check a checkbox field
pdf.Form.FindFormField("newsletterOptIn").Value = "Yes"

' Select an option from a dropdown
pdf.Form.FindFormField("accountType").Value = "Premium"

' Save the filled form
pdf.SaveAs("customer-registration-completed.pdf")

Imports IronPdf

' Load the form document
Dim pdf As PdfDocument = PdfDocument.FromFile("customer-registration.pdf")

' Fill text fields with customer information
pdf.Form.FindFormField("fullName").Value = "Sarah Johnson"
pdf.Form.FindFormField("email").Value = "sarah.johnson@example.com"
pdf.Form.FindFormField("phone").Value = "(555) 123-4567"
pdf.Form.FindFormField("address").Value = "742 Evergreen Terrace" & vbCrLf & "Springfield, IL 62701"

' Check a checkbox field
pdf.Form.FindFormField("newsletterOptIn").Value = "Yes"

' Select an option from a dropdown
pdf.Form.FindFormField("accountType").Value = "Premium"

' Save the filled form
pdf.SaveAs("customer-registration-completed.pdf")

Imports IronPdf

Dim pdf As PdfDocument = PdfDocument.FromFile("survey-form.pdf")

' Get a radio button group and examine its options
Dim satisfactionField = pdf.Form.FindFormField("satisfactionLevel")

' Access available options from the radio button annotations
For Each annotation In satisfactionField.Annotations
    ' annotation.OnAppearance contains the option value
Next

' Select one option from the group
satisfactionField.Value = "Very Satisfied"

pdf.SaveAs("survey-completed.pdf")

Imports IronPdf

Dim pdf As PdfDocument = PdfDocument.FromFile("survey-form.pdf")

' Get a radio button group and examine its options
Dim satisfactionField = pdf.Form.FindFormField("satisfactionLevel")

' Access available options from the radio button annotations
For Each annotation In satisfactionField.Annotations
    ' annotation.OnAppearance contains the option value
Next

' Select one option from the group
satisfactionField.Value = "Very Satisfied"

pdf.SaveAs("survey-completed.pdf")

Imports IronPdf

Dim pdf As PdfDocument = PdfDocument.FromFile("order-form.pdf")

Dim shippingMethod = pdf.Form.FindFormField("shippingMethod")

' Access all available shipping options via shippingMethod.Choices

' Select express shipping
shippingMethod.Value = "Express (2-3 days)"

pdf.SaveAs("order-form-filled.pdf")

Imports IronPdf

Dim pdf As PdfDocument = PdfDocument.FromFile("order-form.pdf")

Dim shippingMethod = pdf.Form.FindFormField("shippingMethod")

' Access all available shipping options via shippingMethod.Choices

' Select express shipping
shippingMethod.Value = "Express (2-3 days)"

pdf.SaveAs("order-form-filled.pdf")

Imports IronPdf
Imports System.Collections.Generic

' Form data stored in a dictionary
Dim formData As New Dictionary(Of String, String) From {
    {"applicantName", "Michael Chen"},
    {"dateOfBirth", "1985-03-15"},
    {"ssn", "XXX-XX-1234"},
    {"streetAddress", "456 Oak Avenue"},
    {"city", "Portland"},
    {"state", "OR"},
    {"zipCode", "97201"},
    {"employmentStatus", "Full-Time"},
    {"annualIncome", "75000"},
    {"agreeToTerms", "Yes"}
}

Dim pdf As PdfDocument = PdfDocument.FromFile("loan-application.pdf")

' Iterate through the dictionary and fill matching fields
For Each entry In formData
    Dim field = pdf.Form.FindFormField(entry.Key)
    If field IsNot Nothing Then
        field.Value = entry.Value
    End If
Next

pdf.SaveAs("loan-application-filled.pdf")

Imports IronPdf
Imports System.Collections.Generic

' Form data stored in a dictionary
Dim formData As New Dictionary(Of String, String) From {
    {"applicantName", "Michael Chen"},
    {"dateOfBirth", "1985-03-15"},
    {"ssn", "XXX-XX-1234"},
    {"streetAddress", "456 Oak Avenue"},
    {"city", "Portland"},
    {"state", "OR"},
    {"zipCode", "97201"},
    {"employmentStatus", "Full-Time"},
    {"annualIncome", "75000"},
    {"agreeToTerms", "Yes"}
}

Dim pdf As PdfDocument = PdfDocument.FromFile("loan-application.pdf")

' Iterate through the dictionary and fill matching fields
For Each entry In formData
    Dim field = pdf.Form.FindFormField(entry.Key)
    If field IsNot Nothing Then
        field.Value = entry.Value
    End If
Next

pdf.SaveAs("loan-application-filled.pdf")

Imports IronPdf
Imports System

' Define a strongly-typed class for the form data
Public Class EmployeeRecord
    Public Property FirstName As String
    Public Property LastName As String
    Public Property EmployeeId As String
    Public Property Department As String
    Public Property HireDate As DateTime
    Public Property JobTitle As String
    Public Property DirectDeposit As Boolean
End Class

Public Class FormFiller
    Public Sub FillEmployeeForm(employee As EmployeeRecord, templatePath As String, outputPath As String)
        Dim pdf As PdfDocument = PdfDocument.FromFile(templatePath)
        
        ' Map object properties to form fields
        pdf.Form.FindFormField("firstName").Value = employee.FirstName
        pdf.Form.FindFormField("lastName").Value = employee.LastName
        pdf.Form.FindFormField("employeeId").Value = employee.EmployeeId
        pdf.Form.FindFormField("department").Value = employee.Department
        pdf.Form.FindFormField("hireDate").Value = employee.HireDate.ToString("MM/dd/yyyy")
        pdf.Form.FindFormField("jobTitle").Value = employee.JobTitle
        pdf.Form.FindFormField("directDeposit").Value = If(employee.DirectDeposit, "Yes", "No")
        
        pdf.SaveAs(outputPath)
    End Sub
End Class

' Usage example
Class Program
    Shared Sub Main()
        Dim employee As New EmployeeRecord With {
            .FirstName = "Jennifer",
            .LastName = "Martinez",
            .EmployeeId = "EMP-2024-0892",
            .Department = "Engineering",
            .HireDate = New DateTime(2024, 6, 15),
            .JobTitle = "Senior Developer",
            .DirectDeposit = True
        }
        
        Dim filler As New FormFiller()
        filler.FillEmployeeForm(employee, "new-hire-form.pdf", "jennifer-martinez-onboarding.pdf")
    End Sub
End Class

Imports IronPdf
Imports System

' Define a strongly-typed class for the form data
Public Class EmployeeRecord
    Public Property FirstName As String
    Public Property LastName As String
    Public Property EmployeeId As String
    Public Property Department As String
    Public Property HireDate As DateTime
    Public Property JobTitle As String
    Public Property DirectDeposit As Boolean
End Class

Public Class FormFiller
    Public Sub FillEmployeeForm(employee As EmployeeRecord, templatePath As String, outputPath As String)
        Dim pdf As PdfDocument = PdfDocument.FromFile(templatePath)
        
        ' Map object properties to form fields
        pdf.Form.FindFormField("firstName").Value = employee.FirstName
        pdf.Form.FindFormField("lastName").Value = employee.LastName
        pdf.Form.FindFormField("employeeId").Value = employee.EmployeeId
        pdf.Form.FindFormField("department").Value = employee.Department
        pdf.Form.FindFormField("hireDate").Value = employee.HireDate.ToString("MM/dd/yyyy")
        pdf.Form.FindFormField("jobTitle").Value = employee.JobTitle
        pdf.Form.FindFormField("directDeposit").Value = If(employee.DirectDeposit, "Yes", "No")
        
        pdf.SaveAs(outputPath)
    End Sub
End Class

' Usage example
Class Program
    Shared Sub Main()
        Dim employee As New EmployeeRecord With {
            .FirstName = "Jennifer",
            .LastName = "Martinez",
            .EmployeeId = "EMP-2024-0892",
            .Department = "Engineering",
            .HireDate = New DateTime(2024, 6, 15),
            .JobTitle = "Senior Developer",
            .DirectDeposit = True
        }
        
        Dim filler As New FormFiller()
        filler.FillEmployeeForm(employee, "new-hire-form.pdf", "jennifer-martinez-onboarding.pdf")
    End Sub
End Class

Imports IronPdf
Imports System
Imports System.Collections.Generic
Imports System.Text.RegularExpressions

Public Class FormValidationResult
    Public Property IsValid As Boolean
    Public Property Errors As List(Of String) = New List(Of String)()
End Class

Public Class FormValidator
    Public Function ValidateApplicationData(formData As Dictionary(Of String, String), pdf As PdfDocument) As FormValidationResult
        Dim result = New FormValidationResult With {
            .IsValid = True
        }

        ' Check that all required fields have values
        Dim requiredFields = New String() {"applicantName", "email", "phone", "ssn"}
        For Each fieldName In requiredFields
            If Not formData.ContainsKey(fieldName) OrElse String.IsNullOrWhiteSpace(formData(fieldName)) Then
                result.Errors.Add($"Required field '{fieldName}' is missing or empty")
                result.IsValid = False
            End If
        Next

        ' Validate email format
        If formData.ContainsKey("email") Then
            Dim emailPattern = "^[^@\s]+@[^@\s]+\.[^@\s]+$"
            If Not Regex.IsMatch(formData("email"), emailPattern) Then
                result.Errors.Add("Email address format is invalid")
                result.IsValid = False
            End If
        End If

        ' Validate phone number format
        If formData.ContainsKey("phone") Then
            Dim phonePattern = "^\(?\d{3}\)?[-.\s]?\d{3}[-.\s]?\d{4}$"
            If Not Regex.IsMatch(formData("phone"), phonePattern) Then
                result.Errors.Add("Phone number format is invalid")
                result.IsValid = False
            End If
        End If

        ' Verify that form fields exist in the PDF
        For Each fieldName In formData.Keys
            Try
                Dim field = pdf.Form.FindFormField(fieldName)
                ' Field exists
            Catch
                result.Errors.Add($"Field '{fieldName}' does not exist in the PDF form")
                result.IsValid = False
            End Try
        Next

        ' Check dropdown values against available choices
        If formData.ContainsKey("state") Then
            Try
                Dim stateField = pdf.Form.FindFormField("state")
                If stateField.Choices IsNot Nothing Then
                    Dim validChoice As Boolean = False
                    For Each choice In stateField.Choices
                        If choice = formData("state") Then
                            validChoice = True
                            Exit For
                        End If
                    Next
                    If Not validChoice Then
                        result.Errors.Add($"'{formData("state")}' is not a valid option for the state field")
                        result.IsValid = False
                    End If
                End If
            Catch
                ' State field doesn't exist, skip validation
            End Try
        End If

        Return result
    End Function
End Class

' Usage example
Class Program
    Shared Sub Main()
        Dim formData = New Dictionary(Of String, String) From {
            {"applicantName", "John Doe"},
            {"email", "invalid-email"},
            {"phone", "555-1234"},
            {"state", "XX"}
        }

        Dim pdf As PdfDocument = PdfDocument.FromFile("application.pdf")
        Dim validator = New FormValidator()
        Dim validationResult = validator.ValidateApplicationData(formData, pdf)

        If validationResult.IsValid Then
            ' Proceed with form fill
        Else
            ' Handle validation errors in validationResult.Errors
        End If
    End Sub
End Class

Imports IronPdf
Imports System
Imports System.Collections.Generic
Imports System.Text.RegularExpressions

Public Class FormValidationResult
    Public Property IsValid As Boolean
    Public Property Errors As List(Of String) = New List(Of String)()
End Class

Public Class FormValidator
    Public Function ValidateApplicationData(formData As Dictionary(Of String, String), pdf As PdfDocument) As FormValidationResult
        Dim result = New FormValidationResult With {
            .IsValid = True
        }

        ' Check that all required fields have values
        Dim requiredFields = New String() {"applicantName", "email", "phone", "ssn"}
        For Each fieldName In requiredFields
            If Not formData.ContainsKey(fieldName) OrElse String.IsNullOrWhiteSpace(formData(fieldName)) Then
                result.Errors.Add($"Required field '{fieldName}' is missing or empty")
                result.IsValid = False
            End If
        Next

        ' Validate email format
        If formData.ContainsKey("email") Then
            Dim emailPattern = "^[^@\s]+@[^@\s]+\.[^@\s]+$"
            If Not Regex.IsMatch(formData("email"), emailPattern) Then
                result.Errors.Add("Email address format is invalid")
                result.IsValid = False
            End If
        End If

        ' Validate phone number format
        If formData.ContainsKey("phone") Then
            Dim phonePattern = "^\(?\d{3}\)?[-.\s]?\d{3}[-.\s]?\d{4}$"
            If Not Regex.IsMatch(formData("phone"), phonePattern) Then
                result.Errors.Add("Phone number format is invalid")
                result.IsValid = False
            End If
        End If

        ' Verify that form fields exist in the PDF
        For Each fieldName In formData.Keys
            Try
                Dim field = pdf.Form.FindFormField(fieldName)
                ' Field exists
            Catch
                result.Errors.Add($"Field '{fieldName}' does not exist in the PDF form")
                result.IsValid = False
            End Try
        Next

        ' Check dropdown values against available choices
        If formData.ContainsKey("state") Then
            Try
                Dim stateField = pdf.Form.FindFormField("state")
                If stateField.Choices IsNot Nothing Then
                    Dim validChoice As Boolean = False
                    For Each choice In stateField.Choices
                        If choice = formData("state") Then
                            validChoice = True
                            Exit For
                        End If
                    Next
                    If Not validChoice Then
                        result.Errors.Add($"'{formData("state")}' is not a valid option for the state field")
                        result.IsValid = False
                    End If
                End If
            Catch
                ' State field doesn't exist, skip validation
            End Try
        End If

        Return result
    End Function
End Class

' Usage example
Class Program
    Shared Sub Main()
        Dim formData = New Dictionary(Of String, String) From {
            {"applicantName", "John Doe"},
            {"email", "invalid-email"},
            {"phone", "555-1234"},
            {"state", "XX"}
        }

        Dim pdf As PdfDocument = PdfDocument.FromFile("application.pdf")
        Dim validator = New FormValidator()
        Dim validationResult = validator.ValidateApplicationData(formData, pdf)

        If validationResult.IsValid Then
            ' Proceed with form fill
        Else
            ' Handle validation errors in validationResult.Errors
        End If
    End Sub
End Class

Imports IronPdf

' Define the form layout using HTML with form elements
Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 40px auto;
            padding: 20px;
        }
        h1 {
            color: #333;
            border-bottom: 2px solid #4CAF50;
            padding-bottom: 10px;
        }
        .form-group {
            margin-bottom: 15px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
            color: #555;
        }
        input[type='text'], textarea {
            width: 100%;
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
            box-sizing: border-box;
        }
        textarea {
            height: 100px;
            resize: none;
        }
        .required::after {
            content: ' *';
            color: red;
        }
    </style>
</head>
<body>
    <h1>Customer Feedback Form</h1>
    <form>
        <div class='form-group'>
            <label class='required'>Full Name</label>
            <input type='text' name='customerName' />
        </div>
        <div class='form-group'>
            <label class='required'>Email Address</label>
            <input type='text' name='customerEmail' />
        </div>
        <div class='form-group'>
            <label>Phone Number</label>
            <input type='text' name='customerPhone' />
        </div>
        <div class='form-group'>
            <label>Order Number</label>
            <input type='text' name='orderNumber' />
        </div>
        <div class='form-group'>
            <label class='required'>Your Feedback</label>
            <textarea name='feedbackText'></textarea>
        </div>
    </form>
</body>
</html>
"

' Create the renderer and enable form creation
Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

' Render the HTML to a PDF with interactive form fields
Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("customer-feedback-form.pdf")

Imports IronPdf

' Define the form layout using HTML with form elements
Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 40px auto;
            padding: 20px;
        }
        h1 {
            color: #333;
            border-bottom: 2px solid #4CAF50;
            padding-bottom: 10px;
        }
        .form-group {
            margin-bottom: 15px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
            color: #555;
        }
        input[type='text'], textarea {
            width: 100%;
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
            box-sizing: border-box;
        }
        textarea {
            height: 100px;
            resize: none;
        }
        .required::after {
            content: ' *';
            color: red;
        }
    </style>
</head>
<body>
    <h1>Customer Feedback Form</h1>
    <form>
        <div class='form-group'>
            <label class='required'>Full Name</label>
            <input type='text' name='customerName' />
        </div>
        <div class='form-group'>
            <label class='required'>Email Address</label>
            <input type='text' name='customerEmail' />
        </div>
        <div class='form-group'>
            <label>Phone Number</label>
            <input type='text' name='customerPhone' />
        </div>
        <div class='form-group'>
            <label>Order Number</label>
            <input type='text' name='orderNumber' />
        </div>
        <div class='form-group'>
            <label class='required'>Your Feedback</label>
            <textarea name='feedbackText'></textarea>
        </div>
    </form>
</body>
</html>
"

' Create the renderer and enable form creation
Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

' Render the HTML to a PDF with interactive form fields
Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("customer-feedback-form.pdf")

Imports IronPdf

Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 40px auto;
            padding: 20px;
        }
        h1 {
            color: #2c3e50;
        }
        h2 {
            color: #34495e;
            font-size: 16px;
            margin-top: 25px;
        }
        .option-group {
            margin: 10px 0;
        }
        .option-group label {
            margin-left: 8px;
            cursor: pointer;
        }
        .checkbox-section {
            background: #f9f9f9;
            padding: 15px;
            border-radius: 5px;
            margin: 15px 0;
        }
    </style>
</head>
<body>
    <h1>Event Registration</h1>
    <form>
        <h2>Select Your Ticket Type</h2>
        <div class='option-group'>
            <input type='radio' name='ticketType' value='General' id='general' />
            <label for='general'>General Admission ($50)</label>
        </div>
        <div class='option-group'>
            <input type='radio' name='ticketType' value='VIP' id='vip' />
            <label for='vip'>VIP Access ($150)</label>
        </div>
        <div class='option-group'>
            <input type='radio' name='ticketType' value='Premium' id='premium' />
            <label for='premium'>Premium Package ($300)</label>
        </div>

        <h2>Which Sessions Will You Attend?</h2>
        <div class='checkbox-section'>
            <div class='option-group'>
                <input type='checkbox' name='sessionMorning' value='Yes' id='morning' />
                <label for='morning'>Morning Keynote (9:00 AM)</label>
            </div>
            <div class='option-group'>
                <input type='checkbox' name='sessionWorkshop' value='Yes' id='workshop' />
                <label for='workshop'>Afternoon Workshop (2:00 PM)</label>
            </div>
            <div class='option-group'>
                <input type='checkbox' name='sessionNetworking' value='Yes' id='networking' />
                <label for='networking'>Evening Networking (6:00 PM)</label>
            </div>
        </div>

        <h2>Dietary Requirements</h2>
        <div class='option-group'>
            <input type='checkbox' name='dietVegetarian' value='Yes' id='vegetarian' />
            <label for='vegetarian'>Vegetarian</label>
        </div>
        <div class='option-group'>
            <input type='checkbox' name='dietVegan' value='Yes' id='vegan' />
            <label for='vegan'>Vegan</label>
        </div>
        <div class='option-group'>
            <input type='checkbox' name='dietGlutenFree' value='Yes' id='glutenfree' />
            <label for='glutenfree'>Gluten-Free</label>
        </div>
    </form>
</body>
</html>"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("event-registration-form.pdf")

Imports IronPdf

Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 40px auto;
            padding: 20px;
        }
        h1 {
            color: #2c3e50;
        }
        h2 {
            color: #34495e;
            font-size: 16px;
            margin-top: 25px;
        }
        .option-group {
            margin: 10px 0;
        }
        .option-group label {
            margin-left: 8px;
            cursor: pointer;
        }
        .checkbox-section {
            background: #f9f9f9;
            padding: 15px;
            border-radius: 5px;
            margin: 15px 0;
        }
    </style>
</head>
<body>
    <h1>Event Registration</h1>
    <form>
        <h2>Select Your Ticket Type</h2>
        <div class='option-group'>
            <input type='radio' name='ticketType' value='General' id='general' />
            <label for='general'>General Admission ($50)</label>
        </div>
        <div class='option-group'>
            <input type='radio' name='ticketType' value='VIP' id='vip' />
            <label for='vip'>VIP Access ($150)</label>
        </div>
        <div class='option-group'>
            <input type='radio' name='ticketType' value='Premium' id='premium' />
            <label for='premium'>Premium Package ($300)</label>
        </div>

        <h2>Which Sessions Will You Attend?</h2>
        <div class='checkbox-section'>
            <div class='option-group'>
                <input type='checkbox' name='sessionMorning' value='Yes' id='morning' />
                <label for='morning'>Morning Keynote (9:00 AM)</label>
            </div>
            <div class='option-group'>
                <input type='checkbox' name='sessionWorkshop' value='Yes' id='workshop' />
                <label for='workshop'>Afternoon Workshop (2:00 PM)</label>
            </div>
            <div class='option-group'>
                <input type='checkbox' name='sessionNetworking' value='Yes' id='networking' />
                <label for='networking'>Evening Networking (6:00 PM)</label>
            </div>
        </div>

        <h2>Dietary Requirements</h2>
        <div class='option-group'>
            <input type='checkbox' name='dietVegetarian' value='Yes' id='vegetarian' />
            <label for='vegetarian'>Vegetarian</label>
        </div>
        <div class='option-group'>
            <input type='checkbox' name='dietVegan' value='Yes' id='vegan' />
            <label for='vegan'>Vegan</label>
        </div>
        <div class='option-group'>
            <input type='checkbox' name='dietGlutenFree' value='Yes' id='glutenfree' />
            <label for='glutenfree'>Gluten-Free</label>
        </div>
    </form>
</body>
</html>"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("event-registration-form.pdf")

Imports IronPdf

Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: 'Segoe UI', Arial, sans-serif;
            max-width: 650px;
            margin: 30px auto;
            padding: 25px;
            background: #fff;
        }
        h1 {
            color: #1a5f7a;
            margin-bottom: 30px;
        }
        .form-row {
            display: flex;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            flex: 1;
        }
        label {
            display: block;
            margin-bottom: 6px;
            font-weight: 600;
            color: #333;
        }
        select, input[type='text'] {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 14px;
            box-sizing: border-box;
        }
    </style>
</head>
<body>
    <h1>Job Application Form</h1>
    <form>
        <div class='form-row'>
            <div class='form-group'>
                <label>First Name</label>
                <input type='text' name='firstName' />
            </div>
            <div class='form-group'>
                <label>Last Name</label>
                <input type='text' name='lastName' />
            </div>
        </div>
        <div class='form-row'>
            <div class='form-group'>
                <label>Department</label>
                <select name='department'>
                    <option value=''>Select Department</option>
                    <option value='Engineering'>Engineering</option>
                    <option value='Marketing'>Marketing</option>
                    <option value='Sales'>Sales</option>
                    <option value='Human Resources'>Human Resources</option>
                    <option value='Finance'>Finance</option>
                    <option value='Operations'>Operations</option>
                </select>
            </div>
            <div class='form-group'>
                <label>Experience Level</label>
                <select name='experienceLevel'>
                    <option value=''>Select Level</option>
                    <option value='Entry'>Entry Level (0-2 years)</option>
                    <option value='Mid'>Mid Level (3-5 years)</option>
                    <option value='Senior'>Senior (6-10 years)</option>
                    <option value='Executive'>Executive (10+ years)</option>
                </select>
            </div>
        </div>
        <div class='form-row'>
            <div class='form-group'>
                <label>Preferred Start Date</label>
                <select name='startDate'>
                    <option value='Immediate'>Immediately</option>
                    <option value='TwoWeeks'>In 2 weeks</option>
                    <option value='OneMonth'>In 1 month</option>
                    <option value='Flexible'>Flexible</option>
                </select>
            </div>
            <div class='form-group'>
                <label>Work Location Preference</label>
                <select name='workLocation'>
                    <option value='OnSite'>On-Site</option>
                    <option value='Remote'>Fully Remote</option>
                    <option value='Hybrid'>Hybrid</option>
                </select>
            </div>
        </div>
    </form>
</body>
</html>
"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("job-application-form.pdf")

Imports IronPdf

Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: 'Segoe UI', Arial, sans-serif;
            max-width: 650px;
            margin: 30px auto;
            padding: 25px;
            background: #fff;
        }
        h1 {
            color: #1a5f7a;
            margin-bottom: 30px;
        }
        .form-row {
            display: flex;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            flex: 1;
        }
        label {
            display: block;
            margin-bottom: 6px;
            font-weight: 600;
            color: #333;
        }
        select, input[type='text'] {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 14px;
            box-sizing: border-box;
        }
    </style>
</head>
<body>
    <h1>Job Application Form</h1>
    <form>
        <div class='form-row'>
            <div class='form-group'>
                <label>First Name</label>
                <input type='text' name='firstName' />
            </div>
            <div class='form-group'>
                <label>Last Name</label>
                <input type='text' name='lastName' />
            </div>
        </div>
        <div class='form-row'>
            <div class='form-group'>
                <label>Department</label>
                <select name='department'>
                    <option value=''>Select Department</option>
                    <option value='Engineering'>Engineering</option>
                    <option value='Marketing'>Marketing</option>
                    <option value='Sales'>Sales</option>
                    <option value='Human Resources'>Human Resources</option>
                    <option value='Finance'>Finance</option>
                    <option value='Operations'>Operations</option>
                </select>
            </div>
            <div class='form-group'>
                <label>Experience Level</label>
                <select name='experienceLevel'>
                    <option value=''>Select Level</option>
                    <option value='Entry'>Entry Level (0-2 years)</option>
                    <option value='Mid'>Mid Level (3-5 years)</option>
                    <option value='Senior'>Senior (6-10 years)</option>
                    <option value='Executive'>Executive (10+ years)</option>
                </select>
            </div>
        </div>
        <div class='form-row'>
            <div class='form-group'>
                <label>Preferred Start Date</label>
                <select name='startDate'>
                    <option value='Immediate'>Immediately</option>
                    <option value='TwoWeeks'>In 2 weeks</option>
                    <option value='OneMonth'>In 1 month</option>
                    <option value='Flexible'>Flexible</option>
                </select>
            </div>
            <div class='form-group'>
                <label>Work Location Preference</label>
                <select name='workLocation'>
                    <option value='OnSite'>On-Site</option>
                    <option value='Remote'>Fully Remote</option>
                    <option value='Hybrid'>Hybrid</option>
                </select>
            </div>
        </div>
    </form>
</body>
</html>
"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("job-application-form.pdf")

Imports IronPdf
Imports IronSoftware.Forms

' First create the base form using HTML
Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 40px auto;
            padding: 30px;
        }
        h1 {
            text-align: center;
            color: #2c3e50;
        }
        .agreement-text {
            background: #f5f5f5;
            padding: 20px;
            border-radius: 5px;
            margin: 20px 0;
            line-height: 1.6;
        }
        .signature-section {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #ddd;
        }
        .signature-line {
            margin-top: 60px;
            border-bottom: 1px solid #333;
            width: 300px;
        }
        .signature-label {
            font-size: 12px;
            color: #666;
            margin-top: 5px;
        }
        .date-field {
            margin-top: 20px;
        }
        .date-field label {
            font-weight: bold;
        }
        .date-field input {
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
            width: 150px;
        }
    </style>
</head>
<body>
    <h1>Non-Disclosure Agreement</h1>
    <div class='agreement-text'>
        <p>By signing this document, I acknowledge that I have read and understood the terms of the Non-Disclosure Agreement dated as of the date signed below. I agree to maintain the confidentiality of all proprietary information disclosed to me during my engagement with the Company.</p>
        <p>I understand that violation of this agreement may result in legal action and that I am bound by these terms for a period of five (5) years from the date of signature.</p>
    </div>
    <div class='signature-section'>
        <div class='date-field'>
            <label>Date:</label>
            <input type='text' name='signatureDate' />
        </div>
        <div class='signature-line'></div>
        <div class='signature-label'>Authorized Signature</div>
    </div>
</body>
</html>"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)

' Add a signature field programmatically
' Parameters: name, page index, x position, y position, width, height
Dim signatureField As New SignatureFormField(
    "authorizedSignature",  ' Field name
    0,                      ' Page index (first page)
    72,                     ' X position in points from left
    200,                    ' Y position in points from bottom
    250,                    ' Width in points
    60                      ' Height in points
)

pdf.Form.Add(signatureField)
pdf.SaveAs("nda-with-signature.pdf")

Imports IronPdf
Imports IronSoftware.Forms

' First create the base form using HTML
Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 40px auto;
            padding: 30px;
        }
        h1 {
            text-align: center;
            color: #2c3e50;
        }
        .agreement-text {
            background: #f5f5f5;
            padding: 20px;
            border-radius: 5px;
            margin: 20px 0;
            line-height: 1.6;
        }
        .signature-section {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #ddd;
        }
        .signature-line {
            margin-top: 60px;
            border-bottom: 1px solid #333;
            width: 300px;
        }
        .signature-label {
            font-size: 12px;
            color: #666;
            margin-top: 5px;
        }
        .date-field {
            margin-top: 20px;
        }
        .date-field label {
            font-weight: bold;
        }
        .date-field input {
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
            width: 150px;
        }
    </style>
</head>
<body>
    <h1>Non-Disclosure Agreement</h1>
    <div class='agreement-text'>
        <p>By signing this document, I acknowledge that I have read and understood the terms of the Non-Disclosure Agreement dated as of the date signed below. I agree to maintain the confidentiality of all proprietary information disclosed to me during my engagement with the Company.</p>
        <p>I understand that violation of this agreement may result in legal action and that I am bound by these terms for a period of five (5) years from the date of signature.</p>
    </div>
    <div class='signature-section'>
        <div class='date-field'>
            <label>Date:</label>
            <input type='text' name='signatureDate' />
        </div>
        <div class='signature-line'></div>
        <div class='signature-label'>Authorized Signature</div>
    </div>
</body>
</html>"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)

' Add a signature field programmatically
' Parameters: name, page index, x position, y position, width, height
Dim signatureField As New SignatureFormField(
    "authorizedSignature",  ' Field name
    0,                      ' Page index (first page)
    72,                     ' X position in points from left
    200,                    ' Y position in points from bottom
    250,                    ' Width in points
    60                      ' Height in points
)

pdf.Form.Add(signatureField)
pdf.SaveAs("nda-with-signature.pdf")

Imports IronPdf

Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            margin: 0;
            padding: 40px;
            box-sizing: border-box;
        }

        .form-container {
            background: white;
            max-width: 550px;
            margin: 0 auto;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }

        h1 {
            margin: 0 0 10px 0;
            color: #1a1a2e;
            font-weight: 600;
        }

        .subtitle {
            color: #666;
            margin-bottom: 30px;
            font-size: 14px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
            font-size: 14px;
        }

        input[type='text'], select, textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e1e1e1;
            border-radius: 8px;
            font-size: 14px;
            transition: border-color 0.3s;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        input[type='text']:focus, select:focus, textarea:focus {
            border-color: #667eea;
            outline: none;
        }

        textarea {
            height: 120px;
            resize: none;
        }

        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px;
            background: #f8f9fa;
            border-radius: 8px;
        }

        .checkbox-group input[type='checkbox'] {
            width: 20px;
            height: 20px;
            accent-color: #667eea;
        }

        .two-column {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .footer-note {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            font-size: 12px;
            color: #888;
            text-align: center;
        }
    </style>
</head>
<body>
    <div class='form-container'>
        <h1>Contact Request</h1>
        <p class='subtitle'>Fill out the form below and we will get back to you within 24 hours.</p>

        <form>
            <div class='two-column'>
                <div class='form-group'>
                    <label>First Name</label>
                    <input type='text' name='firstName' />
                </div>
                <div class='form-group'>
                    <label>Last Name</label>
                    <input type='text' name='lastName' />
                </div>
            </div>

            <div class='form-group'>
                <label>Email Address</label>
                <input type='text' name='email' />
            </div>

            <div class='form-group'>
                <label>Subject</label>
                <select name='subject'>
                    <option value=''>Choose a topic...</option>
                    <option value='General'>General Inquiry</option>
                    <option value='Support'>Technical Support</option>
                    <option value='Sales'>Sales Question</option>
                    <option value='Partnership'>Partnership Opportunity</option>
                </select>
            </div>

            <div class='form-group'>
                <label>Message</label>
                <textarea name='message'></textarea>
            </div>

            <div class='form-group'>
                <div class='checkbox-group'>
                    <input type='checkbox' name='newsletter' value='Yes' id='newsletter' />
                    <label for='newsletter' style='margin: 0; font-weight: normal;'>
                        Subscribe to our newsletter for updates
                    </label>
                </div>
            </div>
        </form>

        <p class='footer-note'>Your information is secure and will never be shared with third parties.</p>
    </div>
</body>
</html>
"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

' Set page size and margins
renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.A4
renderer.RenderingOptions.MarginTop = 0
renderer.RenderingOptions.MarginBottom = 0
renderer.RenderingOptions.MarginLeft = 0
renderer.RenderingOptions.MarginRight = 0

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("styled-contact-form.pdf")

Imports IronPdf

Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            margin: 0;
            padding: 40px;
            box-sizing: border-box;
        }

        .form-container {
            background: white;
            max-width: 550px;
            margin: 0 auto;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
        }

        h1 {
            margin: 0 0 10px 0;
            color: #1a1a2e;
            font-weight: 600;
        }

        .subtitle {
            color: #666;
            margin-bottom: 30px;
            font-size: 14px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
            font-size: 14px;
        }

        input[type='text'], select, textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e1e1e1;
            border-radius: 8px;
            font-size: 14px;
            transition: border-color 0.3s;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        input[type='text']:focus, select:focus, textarea:focus {
            border-color: #667eea;
            outline: none;
        }

        textarea {
            height: 120px;
            resize: none;
        }

        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px;
            background: #f8f9fa;
            border-radius: 8px;
        }

        .checkbox-group input[type='checkbox'] {
            width: 20px;
            height: 20px;
            accent-color: #667eea;
        }

        .two-column {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .footer-note {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            font-size: 12px;
            color: #888;
            text-align: center;
        }
    </style>
</head>
<body>
    <div class='form-container'>
        <h1>Contact Request</h1>
        <p class='subtitle'>Fill out the form below and we will get back to you within 24 hours.</p>

        <form>
            <div class='two-column'>
                <div class='form-group'>
                    <label>First Name</label>
                    <input type='text' name='firstName' />
                </div>
                <div class='form-group'>
                    <label>Last Name</label>
                    <input type='text' name='lastName' />
                </div>
            </div>

            <div class='form-group'>
                <label>Email Address</label>
                <input type='text' name='email' />
            </div>

            <div class='form-group'>
                <label>Subject</label>
                <select name='subject'>
                    <option value=''>Choose a topic...</option>
                    <option value='General'>General Inquiry</option>
                    <option value='Support'>Technical Support</option>
                    <option value='Sales'>Sales Question</option>
                    <option value='Partnership'>Partnership Opportunity</option>
                </select>
            </div>

            <div class='form-group'>
                <label>Message</label>
                <textarea name='message'></textarea>
            </div>

            <div class='form-group'>
                <div class='checkbox-group'>
                    <input type='checkbox' name='newsletter' value='Yes' id='newsletter' />
                    <label for='newsletter' style='margin: 0; font-weight: normal;'>
                        Subscribe to our newsletter for updates
                    </label>
                </div>
            </div>
        </form>

        <p class='footer-note'>Your information is secure and will never be shared with third parties.</p>
    </div>
</body>
</html>
"

Dim renderer As New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True

' Set page size and margins
renderer.RenderingOptions.PaperSize = IronPdf.Rendering.PdfPaperSize.A4
renderer.RenderingOptions.MarginTop = 0
renderer.RenderingOptions.MarginBottom = 0
renderer.RenderingOptions.MarginLeft = 0
renderer.RenderingOptions.MarginRight = 0

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)
pdf.SaveAs("styled-contact-form.pdf")

Imports IronPdf
Imports System.Collections.Generic

' Load a filled PDF form
Dim filledForm As PdfDocument = PdfDocument.FromFile("completed-application.pdf")

' Extract all form data into a dictionary
Dim extractedData As New Dictionary(Of String, String)()

For Each field In filledForm.Form
    extractedData(field.Name) = If(field.Value, String.Empty)
Next

' Access extracted data
' extractedData.GetValueOrDefault("firstName")
' extractedData.GetValueOrDefault("lastName")
' extractedData.GetValueOrDefault("email")
' extractedData.GetValueOrDefault("department")

Imports IronPdf
Imports System.Collections.Generic

' Load a filled PDF form
Dim filledForm As PdfDocument = PdfDocument.FromFile("completed-application.pdf")

' Extract all form data into a dictionary
Dim extractedData As New Dictionary(Of String, String)()

For Each field In filledForm.Form
    extractedData(field.Name) = If(field.Value, String.Empty)
Next

' Access extracted data
' extractedData.GetValueOrDefault("firstName")
' extractedData.GetValueOrDefault("lastName")
' extractedData.GetValueOrDefault("email")
' extractedData.GetValueOrDefault("department")

Imports IronPdf
Imports System

Public Class ApplicationData
    Public Property FirstName As String
    Public Property LastName As String
    Public Property Email As String
    Public Property Phone As String
    Public Property Department As String
    Public Property ExperienceLevel As String
    Public Property AcceptsTerms As Boolean
End Class

Public Class FormDataExtractor
    Public Function ExtractApplicationData(pdfPath As String) As ApplicationData
        Dim pdf As PdfDocument = PdfDocument.FromFile(pdfPath)

        Return New ApplicationData With {
            .FirstName = GetFieldValue(pdf, "firstName"),
            .LastName = GetFieldValue(pdf, "lastName"),
            .Email = GetFieldValue(pdf, "email"),
            .Phone = GetFieldValue(pdf, "phone"),
            .Department = GetFieldValue(pdf, "department"),
            .ExperienceLevel = GetFieldValue(pdf, "experienceLevel"),
            .AcceptsTerms = GetFieldValue(pdf, "acceptTerms") = "Yes"
        }
    End Function

    Private Function GetFieldValue(pdf As PdfDocument, fieldName As String) As String
        Dim field = pdf.Form.FindFormField(fieldName)
        Return If(field?.Value, String.Empty)
    End Function
End Class

' Usage
Module Program
    Sub Main()
        Dim extractor = New FormDataExtractor()
        Dim application = extractor.ExtractApplicationData("submitted-form.pdf")

        ' Access application.FirstName, application.LastName, application.Department, etc.
    End Sub
End Module

Imports IronPdf
Imports System

Public Class ApplicationData
    Public Property FirstName As String
    Public Property LastName As String
    Public Property Email As String
    Public Property Phone As String
    Public Property Department As String
    Public Property ExperienceLevel As String
    Public Property AcceptsTerms As Boolean
End Class

Public Class FormDataExtractor
    Public Function ExtractApplicationData(pdfPath As String) As ApplicationData
        Dim pdf As PdfDocument = PdfDocument.FromFile(pdfPath)

        Return New ApplicationData With {
            .FirstName = GetFieldValue(pdf, "firstName"),
            .LastName = GetFieldValue(pdf, "lastName"),
            .Email = GetFieldValue(pdf, "email"),
            .Phone = GetFieldValue(pdf, "phone"),
            .Department = GetFieldValue(pdf, "department"),
            .ExperienceLevel = GetFieldValue(pdf, "experienceLevel"),
            .AcceptsTerms = GetFieldValue(pdf, "acceptTerms") = "Yes"
        }
    End Function

    Private Function GetFieldValue(pdf As PdfDocument, fieldName As String) As String
        Dim field = pdf.Form.FindFormField(fieldName)
        Return If(field?.Value, String.Empty)
    End Function
End Class

' Usage
Module Program
    Sub Main()
        Dim extractor = New FormDataExtractor()
        Dim application = extractor.ExtractApplicationData("submitted-form.pdf")

        ' Access application.FirstName, application.LastName, application.Department, etc.
    End Sub
End Module

Imports IronPdf

' Load and fill the form
Dim pdf As PdfDocument = PdfDocument.FromFile("contract-template.pdf")

pdf.Form.FindFormField("clientName").Value = "Acme Corporation"
pdf.Form.FindFormField("contractDate").Value = "January 15, 2025"
pdf.Form.FindFormField("contractValue").Value = "$50,000"
pdf.Form.FindFormField("paymentTerms").Value = "Net 30"

' Make all form fields read-only to prevent further editing
For Each field In pdf.Form
    field.ReadOnly = True
Next

' Save the document with locked fields
pdf.SaveAs("contract-acme-signed.pdf")

Imports IronPdf

' Load and fill the form
Dim pdf As PdfDocument = PdfDocument.FromFile("contract-template.pdf")

pdf.Form.FindFormField("clientName").Value = "Acme Corporation"
pdf.Form.FindFormField("contractDate").Value = "January 15, 2025"
pdf.Form.FindFormField("contractValue").Value = "$50,000"
pdf.Form.FindFormField("paymentTerms").Value = "Net 30"

' Make all form fields read-only to prevent further editing
For Each field In pdf.Form
    field.ReadOnly = True
Next

' Save the document with locked fields
pdf.SaveAs("contract-acme-signed.pdf")

Imports IronPdf
Imports System

Public Class CustomerPortalService
    Public Function GeneratePreFilledRenewalForm(customerId As Integer) As Byte()
        ' Simulate fetching customer data from database
        Dim customer = GetCustomerById(customerId)
        
        ' Load the renewal form template
        Dim pdf As PdfDocument = PdfDocument.FromFile("templates/subscription-renewal.pdf")
        
        ' Pre-fill known customer information
        pdf.Form.FindFormField("customerId").Value = customer.Id.ToString()
        pdf.Form.FindFormField("customerName").Value = customer.FullName
        pdf.Form.FindFormField("email").Value = customer.Email
        pdf.Form.FindFormField("phone").Value = customer.Phone
        pdf.Form.FindFormField("address").Value = customer.Address
        pdf.Form.FindFormField("currentPlan").Value = customer.SubscriptionPlan
        pdf.Form.FindFormField("renewalDate").Value = DateTime.Now.AddDays(30).ToString("MM/dd/yyyy")
        
        ' Leave editable fields empty for customer input:
        ' - newPlan (dropdown for plan selection)
        ' - paymentMethod (radio buttons)
        ' - additionalNotes (textarea)
        ' - signature (signature field)
        
        ' Return as byte array for web download or email attachment
        Return pdf.BinaryData
    End Function
    
    ' Simulated data access
    Private Function GetCustomerById(id As Integer) As Customer
        Return New Customer With {
            .Id = id,
            .FullName = "Robert Williams",
            .Email = "robert.williams@email.com",
            .Phone = "(555) 987-6543",
            .Address = "123 Business Park Drive" & vbCrLf & "Suite 400" & vbCrLf & "Chicago, IL 60601",
            .SubscriptionPlan = "Professional"
        }
    End Function
End Class

Public Class Customer
    Public Property Id As Integer
    Public Property FullName As String
    Public Property Email As String
    Public Property Phone As String
    Public Property Address As String
    Public Property SubscriptionPlan As String
End Class

Imports IronPdf
Imports System

Public Class CustomerPortalService
    Public Function GeneratePreFilledRenewalForm(customerId As Integer) As Byte()
        ' Simulate fetching customer data from database
        Dim customer = GetCustomerById(customerId)
        
        ' Load the renewal form template
        Dim pdf As PdfDocument = PdfDocument.FromFile("templates/subscription-renewal.pdf")
        
        ' Pre-fill known customer information
        pdf.Form.FindFormField("customerId").Value = customer.Id.ToString()
        pdf.Form.FindFormField("customerName").Value = customer.FullName
        pdf.Form.FindFormField("email").Value = customer.Email
        pdf.Form.FindFormField("phone").Value = customer.Phone
        pdf.Form.FindFormField("address").Value = customer.Address
        pdf.Form.FindFormField("currentPlan").Value = customer.SubscriptionPlan
        pdf.Form.FindFormField("renewalDate").Value = DateTime.Now.AddDays(30).ToString("MM/dd/yyyy")
        
        ' Leave editable fields empty for customer input:
        ' - newPlan (dropdown for plan selection)
        ' - paymentMethod (radio buttons)
        ' - additionalNotes (textarea)
        ' - signature (signature field)
        
        ' Return as byte array for web download or email attachment
        Return pdf.BinaryData
    End Function
    
    ' Simulated data access
    Private Function GetCustomerById(id As Integer) As Customer
        Return New Customer With {
            .Id = id,
            .FullName = "Robert Williams",
            .Email = "robert.williams@email.com",
            .Phone = "(555) 987-6543",
            .Address = "123 Business Park Drive" & vbCrLf & "Suite 400" & vbCrLf & "Chicago, IL 60601",
            .SubscriptionPlan = "Professional"
        }
    End Function
End Class

Public Class Customer
    Public Property Id As Integer
    Public Property FullName As String
    Public Property Email As String
    Public Property Phone As String
    Public Property Address As String
    Public Property SubscriptionPlan As String
End Class

Imports IronPdf
Imports System
Imports System.Collections.Generic
Imports System.IO

Public Class FormSubmission
    Public Property SubmissionId As String
    Public Property ReceivedAt As DateTime
    Public Property SourceFile As String
    Public Property FormData As Dictionary(Of String, String)
    Public Property IsValid As Boolean
    Public Property ValidationErrors As List(Of String)
End Class

Public Class FormProcessingPipeline
    Public Function ProcessSubmission(ByVal pdfPath As String) As FormSubmission
        Dim submission = New FormSubmission With {
            .SubmissionId = Guid.NewGuid().ToString("N").Substring(0, 8).ToUpper(),
            .ReceivedAt = DateTime.UtcNow,
            .SourceFile = Path.GetFileName(pdfPath),
            .FormData = New Dictionary(Of String, String)(),
            .ValidationErrors = New List(Of String)()
        }

        ' Step 1: Extract form data
        Dim pdf As PdfDocument = PdfDocument.FromFile(pdfPath)
        For Each field In pdf.Form
            submission.FormData(field.Name) = If(field.Value, String.Empty)
        Next

        ' Step 2: Validate required fields
        Dim requiredFields = New String() {"fullName", "email", "signatureDate"}
        For Each fieldName In requiredFields
            If Not submission.FormData.ContainsKey(fieldName) OrElse String.IsNullOrWhiteSpace(submission.FormData(fieldName)) Then
                submission.ValidationErrors.Add($"Missing required field: {fieldName}")
            End If
        Next

        submission.IsValid = submission.ValidationErrors.Count = 0

        ' Step 3: Return the processed submission
        Return submission
    End Function

    Public Sub ProcessBatch(ByVal folderPath As String)
        Dim pdfFiles = Directory.GetFiles(folderPath, "*.pdf")
        Dim results = New List(Of FormSubmission)()

        For Each file In pdfFiles
            Try
                Dim submission = ProcessSubmission(file)
                results.Add(submission)
            Catch ex As Exception
                ' Handle error for file: ex.Message
            End Try
        Next

        ' Summary
        Dim validCount As Integer = 0
        Dim invalidCount As Integer = 0
        For Each r In results
            If r.IsValid Then
                validCount += 1
            Else
                invalidCount += 1
            End If
        Next

        ' Results summary: results.Count processed, validCount valid, invalidCount invalid
    End Sub
End Class