C# 中的 PDF 表單：建立、填寫和處理互動式表單

using IronPdf;

// Load an existing PDF form document
PdfDocument pdfForm = PdfDocument.FromFile("application-form.pdf");

// Access the form object and iterate through all fields
foreach (var field in pdfForm.Form)
{
    // Access field properties: field.Name, field.Type, field.Value, field.ReadOnly
}

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

using IronPdf;

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

// Find specific fields by name - use try-catch for fields that may not exist
try
{
    var firstNameField = pdfForm.Form.FindFormField("firstName");
    // Use firstNameField.Value to get or set the field value
}
catch (Exception)
{
    // Field not found in this document
}

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

Imports IronPdf

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")

using IronPdf;

// Load the form document
PdfDocument pdf = 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\r\nSpringfield, 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")

using IronPdf;

PdfDocument pdf = PdfDocument.FromFile("survey-form.pdf");

// Get a radio button group and examine its options
var satisfactionField = pdf.Form.FindFormField("satisfactionLevel");

// Access available options from the radio button annotations
foreach (var annotation in satisfactionField.Annotations)
{
    // annotation.OnAppearance contains the option value
}

// 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")

using IronPdf;

PdfDocument pdf = PdfDocument.FromFile("order-form.pdf");

var 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")

using IronPdf;
using System.Collections.Generic;

// Form data stored in a dictionary
var formData = new Dictionary<string, string>
{
    { "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" }
};

PdfDocument pdf = PdfDocument.FromFile("loan-application.pdf");

// Iterate through the dictionary and fill matching fields
foreach (var entry in formData)
{
    var field = pdf.Form.FindFormField(entry.Key);
    if (field != null)
    {
        field.Value = entry.Value;
    }
}

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")

using IronPdf;
using System;

// Define a strongly-typed class for the form data
public class EmployeeRecord
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string EmployeeId { get; set; }
    public string Department { get; set; }
    public DateTime HireDate { get; set; }
    public string JobTitle { get; set; }
    public bool DirectDeposit { get; set; }
}

public class FormFiller
{
    public void FillEmployeeForm(EmployeeRecord employee, string templatePath, string outputPath)
    {
        PdfDocument pdf = 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 = employee.DirectDeposit ? "Yes" : "No";

        pdf.SaveAs(outputPath);
    }
}

// Usage example
class Program
{
    static void Main()
    {
        var employee = new EmployeeRecord
        {
            FirstName = "Jennifer",
            LastName = "Martinez",
            EmployeeId = "EMP-2024-0892",
            Department = "Engineering",
            HireDate = new DateTime(2024, 6, 15),
            JobTitle = "Senior Developer",
            DirectDeposit = true
        };

        var filler = new FormFiller();
        filler.FillEmployeeForm(employee, "new-hire-form.pdf", "jennifer-martinez-onboarding.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
Module Program
    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 Module

using IronPdf;

// Define the form layout using HTML with form elements
string formHtml = @"
<!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
ChromePdfRenderer renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

// Render the HTML to a PDF with interactive form fields
PdfDocument pdf = 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")

using IronPdf;

string formHtml = @"
<!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>";

ChromePdfRenderer renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

PdfDocument pdf = 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")

using IronPdf;

string formHtml = @"
<!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>";

ChromePdfRenderer renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

PdfDocument pdf = 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")

using IronPdf;
using IronSoftware.Forms;

// First create the base form using HTML
string formHtml = @"
<!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>";

ChromePdfRenderer renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

PdfDocument pdf = renderer.RenderHtmlAsPdf(formHtml);

// Add a signature field programmatically
// Parameters: name, page index, x position, y position, width, height
SignatureFormField signatureField = 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")

using IronPdf;

string formHtml = @"
<!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>";

ChromePdfRenderer renderer = 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;

PdfDocument pdf = 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")

using IronPdf;
using System.Collections.Generic;

// Load a filled PDF form
PdfDocument filledForm = PdfDocument.FromFile("completed-application.pdf");

// Extract all form data into a dictionary
var extractedData = new Dictionary<string, string>();

foreach (var field in filledForm.Form)
{
    extractedData[field.Name] = field.Value ?? string.Empty;
}

// 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.TryGetValue("firstName", Nothing)
' extractedData.TryGetValue("lastName", Nothing)
' extractedData.TryGetValue("email", Nothing)
' extractedData.TryGetValue("department", Nothing)

using IronPdf;
using System;

public class ApplicationData
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Email { get; set; }
    public string Phone { get; set; }
    public string Department { get; set; }
    public string ExperienceLevel { get; set; }
    public bool AcceptsTerms { get; set; }
}

public class FormDataExtractor
{
    public ApplicationData ExtractApplicationData(string pdfPath)
    {
        PdfDocument pdf = PdfDocument.FromFile(pdfPath);

        return new ApplicationData
        {
            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"
        };
    }

    private string GetFieldValue(PdfDocument pdf, string fieldName)
    {
        var field = pdf.Form.FindFormField(fieldName);
        return field?.Value ?? string.Empty;
    }
}

// Usage
class Program
{
    static void Main()
    {
        var extractor = new FormDataExtractor();
        var application = extractor.ExtractApplicationData("submitted-form.pdf");

        // Access application.FirstName, application.LastName, application.Department, etc.
    }
}

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
Class Program
    Shared Sub Main()
        Dim extractor As New FormDataExtractor()
        Dim application = extractor.ExtractApplicationData("submitted-form.pdf")

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

using IronPdf;

// Load and fill the form
PdfDocument pdf = 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
foreach (var field in pdf.Form)
{
    field.ReadOnly = true;
}

// 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")

using IronPdf;
using System;

public class CustomerPortalService
{
    public byte[] GeneratePreFilledRenewalForm(int customerId)
    {
        // Simulate fetching customer data from database
        var customer = GetCustomerById(customerId);

        // Load the renewal form template
        PdfDocument pdf = 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;
    }

    // Simulated data access
    private Customer GetCustomerById(int id)
    {
        return new Customer
        {
            Id = id,
            FullName = "Robert Williams",
            Email = "robert.williams@email.com",
            Phone = "(555) 987-6543",
            Address = "123 Business Park Drive\r\nSuite 400\r\nChicago, IL 60601",
            SubscriptionPlan = "Professional"
        };
    }
}

public class Customer
{
    public int Id { get; set; }
    public string FullName { get; set; }
    public string Email { get; set; }
    public string Phone { get; set; }
    public string Address { get; set; }
    public string SubscriptionPlan { get; set; }
}

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

using IronPdf;

// Create or load a form document
string formHtml = @"
<!DOCTYPE html>
<html>
<head>
    <style>
        body { font-family: Arial, sans-serif; margin: 40px; }
        h1 { color: #003366; }
        .form-section { margin: 20px 0; }
        label { display: block; margin: 10px 0 5px 0; font-weight: bold; }
        input, select { padding: 8px; width: 300px; border: 1px solid #ccc; }
    </style>
</head>
<body>
    <h1>Official Government Form</h1>
    <p>This document complies with PDF/A-3b archival standards.</p>
    <form>
        <div class='form-section'>
            <label>Applicant Name</label>
            <input type='text' name='applicantName' />
        </div>
        <div class='form-section'>
            <label>Application Date</label>
            <input type='text' name='applicationDate' />
        </div>
        <div class='form-section'>
            <label>Department</label>
            <select name='department'>
                <option value=''>Select Department</option>
                <option value='Revenue'>Department of Revenue</option>
                <option value='Labor'>Department of Labor</option>
                <option value='Commerce'>Department of Commerce</option>
            </select>
        </div>
    </form>
</body>
</html>";

ChromePdfRenderer renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

PdfDocument pdf = renderer.RenderHtmlAsPdf(formHtml);

// Fill form fields
pdf.Form.FindFormField("applicantName").Value = "Government Services Corp";
pdf.Form.FindFormField("applicationDate").Value = DateTime.Today.ToString("MM/dd/yyyy");
pdf.Form.FindFormField("department").Value = "Commerce";

// Convert to PDF/A-3b for archival compliance
pdf.SaveAsPdfA("government-form-archived.pdf", PdfAVersions.PdfA3b);

Imports IronPdf

' Create or load a form document
Dim formHtml As String = "
<!DOCTYPE html>
<html>
<head>
    <style>
        body { font-family: Arial, sans-serif; margin: 40px; }
        h1 { color: #003366; }
        .form-section { margin: 20px 0; }
        label { display: block; margin: 10px 0 5px 0; font-weight: bold; }
        input, select { padding: 8px; width: 300px; border: 1px solid #ccc; }
    </style>
</head>
<body>
    <h1>Official Government Form</h1>
    <p>This document complies with PDF/A-3b archival standards.</p>
    <form>
        <div class='form-section'>
            <label>Applicant Name</label>
            <input type='text' name='applicantName' />
        </div>
        <div class='form-section'>
            <label>Application Date</label>
            <input type='text' name='applicationDate' />
        </div>
        <div class='form-section'>
            <label>Department</label>
            <select name='department'>
                <option value=''>Select Department</option>
                <option value='Revenue'>Department of Revenue</option>
                <option value='Labor'>Department of Labor</option>
                <option value='Commerce'>Department of Commerce</option>
            </select>
        </div>
    </form>
</body>
</html>"

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

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf(formHtml)

' Fill form fields
pdf.Form.FindFormField("applicantName").Value = "Government Services Corp"
pdf.Form.FindFormField("applicationDate").Value = DateTime.Today.ToString("MM/dd/yyyy")
pdf.Form.FindFormField("department").Value = "Commerce"

' Convert to PDF/A-3b for archival compliance
pdf.SaveAsPdfA("government-form-archived.pdf", PdfAVersions.PdfA3b)