PDF 表单

VB C#

using IronPdf;
using System;

// Step 1.  Creating a PDF with editable forms from HTML using form and input tags
// Radio Button and Checkbox can also be implemented with input type 'radio' and 'checkbox'
const string formHtml = @"
    <html>
        <body>
            <h2>Editable PDF  Form</h2>
            <form>
              First name: <br> <input type='text' name='firstname' value=''> <br>
              Last name: <br> <input type='text' name='lastname' value=''> <br>
              <br>
              <p>Please specify your gender:</p>
              <input type='radio' id='female' name='gender' value= 'Female'>
                <label for='female'>Female</label> <br>
                <br>
              <input type='radio' id='male' name='gender' value='Male'>
                <label for='male'>Male</label> <br>
                <br>
              <input type='radio' id='non-binary/other' name='gender' value='Non-Binary / Other'>
                <label for='non-binary/other'>Non-Binary / Other</label>
              <br>

              <p>Please select all medical conditions that apply:</p>
              <input type='checkbox' id='condition1' name='Hypertension' value='Hypertension'>
              <label for='condition1'> Hypertension</label><br>
              <input type='checkbox' id='condition2' name='Heart Disease' value='Heart Disease'>
              <label for='condition2'> Heart Disease</label><br>
              <input type='checkbox' id='condition3' name='Stoke' value='Stoke'>
              <label for='condition3'> Stoke</label><br>
              <input type='checkbox' id='condition4' name='Diabetes' value='Diabetes'>
              <label for='condition4'> Diabetes</label><br>
              <input type='checkbox' id='condition5' name='Kidney Disease' value='Kidney Disease'>
              <label for='condition5'> Kidney Disease</label><br>
            </form>
        </body>
    </html>";

// Instantiate Renderer
var renderer = new ChromePdfRenderer();
renderer.RenderingOptions.CreatePdfFormsFromHtml = true;
renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf");

// Step 2. Reading and Writing PDF form values.
var FormDocument = PdfDocument.FromFile("BasicForm.pdf");

// Set and Read the value of the "firstname" field
var FirstNameField = FormDocument.Form.FindFormField("firstname");
FirstNameField.Value = "Minnie";
Console.WriteLine("FirstNameField value: {0}", FirstNameField.Value);

// Set and Read the value of the "lastname" field
var LastNameField = FormDocument.Form.FindFormField("lastname");
LastNameField.Value = "Mouse";
Console.WriteLine("LastNameField value: {0}", LastNameField.Value);

FormDocument.SaveAs("FilledForm.pdf");

Imports IronPdf
Imports System

' Step 1.  Creating a PDF with editable forms from HTML using form and input tags
' Radio Button and Checkbox can also be implemented with input type 'radio' and 'checkbox'
Private Const formHtml As String = "
    <html>
        <body>
            <h2>Editable PDF  Form</h2>
            <form>
              First name: <br> <input type='text' name='firstname' value=''> <br>
              Last name: <br> <input type='text' name='lastname' value=''> <br>
              <br>
              <p>Please specify your gender:</p>
              <input type='radio' id='female' name='gender' value= 'Female'>
                <label for='female'>Female</label> <br>
                <br>
              <input type='radio' id='male' name='gender' value='Male'>
                <label for='male'>Male</label> <br>
                <br>
              <input type='radio' id='non-binary/other' name='gender' value='Non-Binary / Other'>
                <label for='non-binary/other'>Non-Binary / Other</label>
              <br>

              <p>Please select all medical conditions that apply:</p>
              <input type='checkbox' id='condition1' name='Hypertension' value='Hypertension'>
              <label for='condition1'> Hypertension</label><br>
              <input type='checkbox' id='condition2' name='Heart Disease' value='Heart Disease'>
              <label for='condition2'> Heart Disease</label><br>
              <input type='checkbox' id='condition3' name='Stoke' value='Stoke'>
              <label for='condition3'> Stoke</label><br>
              <input type='checkbox' id='condition4' name='Diabetes' value='Diabetes'>
              <label for='condition4'> Diabetes</label><br>
              <input type='checkbox' id='condition5' name='Kidney Disease' value='Kidney Disease'>
              <label for='condition5'> Kidney Disease</label><br>
            </form>
        </body>
    </html>"

' Instantiate Renderer
Private renderer = New ChromePdfRenderer()
renderer.RenderingOptions.CreatePdfFormsFromHtml = True
renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf")

' Step 2. Reading and Writing PDF form values.
Dim FormDocument = PdfDocument.FromFile("BasicForm.pdf")

' Set and Read the value of the "firstname" field
Dim FirstNameField = FormDocument.Form.FindFormField("firstname")
FirstNameField.Value = "Minnie"
Console.WriteLine("FirstNameField value: {0}", FirstNameField.Value)

' Set and Read the value of the "lastname" field
Dim LastNameField = FormDocument.Form.FindFormField("lastname")
LastNameField.Value = "Mouse"
Console.WriteLine("LastNameField value: {0}", LastNameField.Value)

FormDocument.SaveAs("FilledForm.pdf")

Install-Package IronPdf

PDF 表单

您的企业在PDF安全和合规方面的年订阅费用太高。考虑 IronSecureDoc，全面的PDF安全解决方案，它提供了一次性支付的SaaS服务管理解决方案，例如数字签名、编辑、加密和保护。探索IronSecureDoc文档。

您可以使用IronPDF像普通文档一样轻松创建可编辑的PDF文档。 PdfForm 类是PDF文档中用户可编辑表单字段的集合。它可以实施到您的PDF渲染中，使其成为表单或可编辑文档。

此示例向您展示如何在IronPDF中创建可编辑PDF表单。

可以通过在文档部分添加 <form>、<input> 和 <textarea> 标签，从HTML创建带有可编辑表单的PDF。

可以使用 PdfDocument.Form.FindFormField 方法读取和写入任何表单字段的值。字段的 name 属性在您的HTML中赋予该字段。

PdfDocument.Form 对象可以有两种使用方式：

填充默认值：这可用于为将在PDF查看器（如Adobe Reader）中显示的表单字段设置默认值。
读取用户输入：在用户填写表单后，可以访问表单字段并将数据读取回您的应用程序。

在上面的示例中，我们首先导入了 IronPdf 库，并定义了一个简单表单的HTML结构，其中包含名字和姓氏的输入字段、性别的单选按钮以及疾病状况的复选框。我们使用启用了 CreatePdfFormsFromHtml 的 ChromePdfRenderer，将此HTML内容转换为PDF文档。

渲染后的PDF首先保存为"BasicForm.pdf"。然后使用 PdfDocument.Form 对象访问和操作表单字段——这里我们为名字和姓氏字段设置值。最后，填充后的文档保存为"FilledForm.pdf"，可以存储或与嵌入的可编辑字段共享。

学习使用 IronPDF 编辑 PDF 表单操作指南

在 GitHub 上查看

代码

https://github.com/iron-software/IronPdf.Examples/tree/main/examples/form-data

下载 ZIP