如何建立 PDF 表單

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IronPDF提供了全面的表單創建功能。它支援各種類型的表單元素，包括輸入欄位、文字區域、核取方塊、下拉式選單、單選按鈕和圖片表單。使用IronPDF，您可以輕鬆生成動態PDF表格，允許用戶通過填寫表格字段、進行選擇和保存更改與文檔進行互動。這使您能夠為各種應用程式和場景創建互動式和用戶友好的PDF表單。

開始使用 IronPDF

立即在您的專案中使用IronPDF，並享受免費試用。

第一步：

如何建立 PDF 表單

下載 IronPDF C# 函式庫以建立 PDF 表單
利用 HTML 中的 input 和 textarea 標籤生成表單
將類型指定為「checkbox」，並選擇標籤將渲染核取方塊和組合框
將類型更改為「radio」以在PDF中輸出單選按鈕
檢查生成的 PDF 輸出

創建表單

IronPDF 輕鬆地製作嵌入各種類型表單欄位的 PDF 文件。通過在靜態的 PDF 文件中添加動態表單元素，可以增強其靈活性和互動性。

文字區域和輸入表單

從 HTML 渲染

您可以輕鬆地在您的PDF文件中創建文本區域和輸入表單來捕獲用戶輸入。文本區域表單提供了充足的空間用於顯示和捕捉較大量的文本，而輸入表單則允許用戶輸入特定的值或回應。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-input-textarea.cs

using IronPdf;

// Input and Text Area forms HTML
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>
            Address: <br> <textarea name='address' rows='4' cols='50'></textarea>
        </form>
    </body>
</html>
";

// Instantiate Renderer
ChromePdfRenderer Renderer = new ChromePdfRenderer();
Renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("textAreaAndInputForm.pdf");

Imports IronPdf

' Input and Text Area forms HTML
Private 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>
            Address: <br> <textarea name='address' rows='4' cols='50'></textarea>
        </form>
    </body>
</html>
"

' Instantiate Renderer
Private Renderer As New ChromePdfRenderer()
Renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("textAreaAndInputForm.pdf")

VB C#

輸出 PDF 文件

透過代碼添加文字表格

上述程式碼範例討論了如何渲染包含文字區域和輸入表單的HTML。然而，也可以透過程式碼添加文本表單欄位。首先，使用所需的參數實例化一個TextFormField物件。接下來，使用 Form 屬性的 Add 方法來添加創建的表單。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-add-input-textarea.cs

using IronPdf;
using IronSoftware.Forms;

// Instantiate ChromePdfRenderer
ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h2>Editable PDF Form</h2>");

// Configure required parameters
string name = "firstname";
string value = "first name";
uint pageIndex = 0;
double x = 100;
double y = 700;
double width = 50;
double height = 15;

// Create text form field
var textForm = new TextFormField(name, value, pageIndex, x, y, width, height);

// Add form
pdf.Form.Add(textForm);

pdf.SaveAs("addTextForm.pdf");

Imports IronPdf
Imports IronSoftware.Forms

' Instantiate ChromePdfRenderer
Private renderer As New ChromePdfRenderer()

Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h2>Editable PDF Form</h2>")

' Configure required parameters
Private name As String = "firstname"
Private value As String = "first name"
Private pageIndex As UInteger = 0
Private x As Double = 100
Private y As Double = 700
Private width As Double = 50
Private height As Double = 15

' Create text form field
Private textForm = New TextFormField(name, value, pageIndex, x, y, width, height)

' Add form
pdf.Form.Add(textForm)

pdf.SaveAs("addTextForm.pdf")

VB C#

輸出 PDF 文件

在PDF中有一個沒有標籤的文本表單字段可能沒有太多意義。為了增強其實用性，您應該在 PDF 中添加文本作為表單字段的標籤。 IronPdf已為您提供支持。您可以透過使用 DrawText 方法來達成這點。進一步了解如何在PDF上繪製文字和位圖.

複選框和下拉式選單表單

從 HTML 渲染

同樣地，複選框和下拉式選單表單可以通過從包含複選框和下拉式選單的 HTML 字串、檔案或網絡 URL 渲染來創建。將 CreatePdfFormsFromHtml 屬性設置為 true 以啟用這些表單的創建。

組合框表單為用戶提供下拉選項列表。用戶可以從可用的選項中選擇，在PDF文件中提供寶貴的輸入。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-checkbox-combobox.cs

using IronPdf;

// Input and Text Area forms HTML
string FormHtml = @"
<html>
    <body>
        <h2>Editable PDF Form</h2>
        <h2>Task Completed</h2>
        <label>
            <input type='checkbox' id='taskCompleted' name='taskCompleted'> Mark task as completed
        </label>

        <h2>Select Priority</h2>
        <label for='priority'>Choose priority level:</label>
        <select id='priority' name='priority'>
            <option value='high'>High</option>
            <option value='medium'>Medium</option>
            <option value='low'>Low</option>
        </select>
    </body>
</html>
";

// Instantiate Renderer
ChromePdfRenderer Renderer = new ChromePdfRenderer();
Renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("checkboxAndComboboxForm.pdf");

Imports IronPdf

' Input and Text Area forms HTML
Private FormHtml As String = "
<html>
    <body>
        <h2>Editable PDF Form</h2>
        <h2>Task Completed</h2>
        <label>
            <input type='checkbox' id='taskCompleted' name='taskCompleted'> Mark task as completed
        </label>

        <h2>Select Priority</h2>
        <label for='priority'>Choose priority level:</label>
        <select id='priority' name='priority'>
            <option value='high'>High</option>
            <option value='medium'>Medium</option>
            <option value='low'>Low</option>
        </select>
    </body>
</html>
"

' Instantiate Renderer
Private Renderer As New ChromePdfRenderer()
Renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("checkboxAndComboboxForm.pdf")

VB C#

輸出 PDF 文件

通過代碼添加表單

核取方塊

要添加一個核取方塊表單欄位，首先使用所需的參數實例化一個CheckboxFormField對象。核取方塊的值參數將決定表單是否應該被勾選，未勾選的值為「no」，勾選的值為「yes」。最後，使用 Form 屬性的 Add 方法來添加創建的表單。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-add-checkbox.cs

using IronPdf;
using IronSoftware.Forms;

// Instantiate ChromePdfRenderer
ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h2>Checkbox Form Field</h2>");

// Configure required parameters
string name = "checkbox";
string value = "no";
uint pageIndex = 0;
double x = 100;
double y = 700;
double width = 15;
double height = 15;

// Create checkbox form field
var checkboxForm = new CheckboxFormField(name, value, pageIndex, x, y, width, height);

// Add form
pdf.Form.Add(checkboxForm);

pdf.SaveAs("addCheckboxForm.pdf");

Imports IronPdf
Imports IronSoftware.Forms

' Instantiate ChromePdfRenderer
Private renderer As New ChromePdfRenderer()

Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h2>Checkbox Form Field</h2>")

' Configure required parameters
Private name As String = "checkbox"
Private value As String = "no"
Private pageIndex As UInteger = 0
Private x As Double = 100
Private y As Double = 700
Private width As Double = 15
Private height As Double = 15

' Create checkbox form field
Private checkboxForm = New CheckboxFormField(name, value, pageIndex, x, y, width, height)

' Add form
pdf.Form.Add(checkboxForm)

pdf.SaveAs("addCheckboxForm.pdf")

VB C#

輸出 PDF 文件

下拉式選單

要添加一個組合框表單字段，首先用所需的參數實例化一個ComboboxFormField對象。類似於核取方塊表單，下拉式選單的值參數決定了哪一個選項將被選擇。最後，使用 Form 屬性的 Add 方法來添加創建的表單。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-add-combobox.cs

using IronPdf;
using IronSoftware.Forms;
using System.Collections.Generic;

// Instantiate ChromePdfRenderer
ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h2>Combobox Form Field</h2>");

// Configure required parameters
string name = "combobox";
string value = "Car";
uint pageIndex = 0;
double x = 100;
double y = 700;
double width = 60;
double height = 15;
var choices = new List<string>() { "Car", "Bike", "Airplane" };

// Create combobox form field
var comboboxForm = new ComboboxFormField(name, value, pageIndex, x, y, width, height, choices);

// Add form
pdf.Form.Add(comboboxForm);

pdf.SaveAs("addComboboxForm.pdf");

Imports IronPdf
Imports IronSoftware.Forms
Imports System.Collections.Generic

' Instantiate ChromePdfRenderer
Private renderer As New ChromePdfRenderer()

Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h2>Combobox Form Field</h2>")

' Configure required parameters
Private name As String = "combobox"
Private value As String = "Car"
Private pageIndex As UInteger = 0
Private x As Double = 100
Private y As Double = 700
Private width As Double = 60
Private height As Double = 15
Private choices = New List(Of String)() From {"Car", "Bike", "Airplane"}

' Create combobox form field
Private comboboxForm = New ComboboxFormField(name, value, pageIndex, x, y, width, height, choices)

' Add form
pdf.Form.Add(comboboxForm)

pdf.SaveAs("addComboboxForm.pdf")

VB C#

輸出 PDF 文件

单选按钮表单

從 HTML 渲染

在 IronPDF 中處理單選按鈕表單時，同一組的單選按鈕被包含在一個表單對象中。您可以通過將其名稱輸入到 FindFormField 方法中來檢索該表單。如果選擇了任何單選項，該表格的值屬性將具有該值；否則，它的值將為'None'。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-radiobutton.cs

using IronPdf;

// Radio buttons HTML
string FormHtml = @"
<html>
    <body>
        <h2>Editable PDF Form</h2>
        Choose your preferred travel type: <br>
        <input type='radio' name='traveltype' value='Bike'>
        Bike <br>
        <input type='radio' name='traveltype' value='Car'>
        Car <br>
        <input type='radio' name='traveltype' value='Airplane'>
        Airplane
    </body>
</html>
";

// Instantiate Renderer
ChromePdfRenderer Renderer = new ChromePdfRenderer();
Renderer.RenderingOptions.CreatePdfFormsFromHtml = true;

Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("radioButtomForm.pdf");

Imports IronPdf

' Radio buttons HTML
Private FormHtml As String = "
<html>
    <body>
        <h2>Editable PDF Form</h2>
        Choose your preferred travel type: <br>
        <input type='radio' name='traveltype' value='Bike'>
        Bike <br>
        <input type='radio' name='traveltype' value='Car'>
        Car <br>
        <input type='radio' name='traveltype' value='Airplane'>
        Airplane
    </body>
</html>
"

' Instantiate Renderer
Private Renderer As New ChromePdfRenderer()
Renderer.RenderingOptions.CreatePdfFormsFromHtml = True

Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("radioButtomForm.pdf")

VB C#

輸出 PDF 文件

透過代碼添加單選表單

同樣，單選按鈕表單欄位也可以透過程式碼新增。首先，使用所需的參數實例化一個 RadioFormField 物件。接下來，使用 Form 屬性的 Add 方法來添加創建的表單。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-add-radiobutton.cs

using IronPdf;
using IronSoftware.Forms;

// Instantiate ChromePdfRenderer
ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h2>Editable PDF Form</h2>");

// Configure required parameters
string name = "choice";
string value = "yes";
uint pageIndex = 0;
double x = 100;
double y = 700;
double width = 15;
double height = 15;

// Create the first radio form
var yesRadioform = new RadioFormField(name, value, pageIndex, x, y, width, height);

value = "no";
x = 200;

// Create the second radio form
var noRadioform = new RadioFormField(name, value, pageIndex, x, y, width, height);

pdf.Form.Add(yesRadioform);
pdf.Form.Add(noRadioform);

pdf.SaveAs("addRadioForm.pdf");

Imports IronPdf
Imports IronSoftware.Forms

' Instantiate ChromePdfRenderer
Private renderer As New ChromePdfRenderer()

Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h2>Editable PDF Form</h2>")

' Configure required parameters
Private name As String = "choice"
Private value As String = "yes"
Private pageIndex As UInteger = 0
Private x As Double = 100
Private y As Double = 700
Private width As Double = 15
Private height As Double = 15

' Create the first radio form
Private yesRadioform = New RadioFormField(name, value, pageIndex, x, y, width, height)

value = "no"
x = 200

' Create the second radio form
Dim noRadioform = New RadioFormField(name, value, pageIndex, x, y, width, height)

pdf.Form.Add(yesRadioform)
pdf.Form.Add(noRadioform)

pdf.SaveAs("addRadioForm.pdf")

VB C#

輸出 PDF 文件

作為最後一步，使用 DrawText 方法為單選按鈕添加標籤。進一步了解如何在PDF上繪製文字和位圖.

透過代碼生成圖像表單

圖像表單字段只能通過代碼添加。首先，使用所需參數實例化一個 ImageFormField 物件。接下來，使用 Form 屬性的 Add 方法來添加創建的表單。

:path=/static-assets/pdf/content-code-examples/how-to/create-forms-add-image.cs

using IronPdf;
using IronSoftware.Forms;

// Instantiate ChromePdfRenderer
ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h2>Editable PDF Form</h2>");

// Configure required parameters
string name = "image1";
uint pageIndex = 0;
double x = 100;
double y = 600;
double width = 200;
double height = 200;

// Create the image form
ImageFormField imageForm = new ImageFormField(name, pageIndex, x, y, width, height);

pdf.Form.Add(imageForm);

pdf.SaveAs("addImageForm.pdf");

Imports IronPdf
Imports IronSoftware.Forms

' Instantiate ChromePdfRenderer
Private renderer As New ChromePdfRenderer()

Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h2>Editable PDF Form</h2>")

' Configure required parameters
Private name As String = "image1"
Private pageIndex As UInteger = 0
Private x As Double = 100
Private y As Double = 600
Private width As Double = 200
Private height As Double = 200

' Create the image form
Private imageForm As New ImageFormField(name, pageIndex, x, y, width, height)

pdf.Form.Add(imageForm)

pdf.SaveAs("addImageForm.pdf")

VB C#

輸出 PDF 文件

輸出 PDF 文件：查看 PDF 的圖像表單. 瀏覽器不支援圖像表單；請在Adobe Acrobat中打開以試用此功能。

通過代碼進行未簽名的簽名表單

要插入未簽名或空白的簽名欄位，首先創建一個簽名物件。然後，訪問目標 PDF 的 Form 屬性，並使用 Add 方法插入簽名對象。最後，導出具有空簽名欄的 PDF。

:path=/static-assets/pdf/content-code-examples/how-to/signing-unsigned-signature.cs

using IronPdf;
using IronSoftware.Forms;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>testing</h1>");

// Configure required parameters
string name = "cert";
uint pageIndex = 0;
double x = 100;
double y = 600;
double width = 300;
double height = 100;

// Create signature
SignatureFormField signature = new SignatureFormField(name, pageIndex, x, y, width, height);

// Add signature
pdf.Form.Add(signature);

pdf.SaveAs("signature.pdf");

Imports IronPdf
Imports IronSoftware.Forms

Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>testing</h1>")

' Configure required parameters
Private name As String = "cert"
Private pageIndex As UInteger = 0
Private x As Double = 100
Private y As Double = 600
Private width As Double = 300
Private height As Double = 100

' Create signature
Private signature As New SignatureFormField(name, pageIndex, x, y, width, height)

' Add signature
pdf.Form.Add(signature)

pdf.SaveAs("signature.pdf")

VB C#

輸出 PDF 文件

輸出 PDF 文件：signature.pdf. 瀏覽器不支援簽名格式；請在Adobe Acrobat中打開以試用此功能。

了解如何在以下文章中以程式化方式填寫和編輯 PDF 表單："如何填寫和編輯 PDF 表單.

查克尼思·賓

軟體工程師

Chaknith 是開發者界的夏洛克福爾摩斯。他第一次意識到自己可能有個軟體工程的未來，是在他為了娛樂而參加程式挑戰的時候。他的重點是 IronXL 和 IronBarcode，但他也引以為豪的是，他幫助客戶解決所有產品的問題。Chaknith 利用他與客戶直接對話中獲得的知識，以進一步改進產品。他的實際反饋超越了 Jira 工單，並支持產品開發、文件撰寫和行銷，以提升客戶的整體體驗。不在公司時，他通常在學習機器學習、寫程式和徒步旅行。