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sameerkhan001sameerkhan001
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948077 Resolved given feedback.
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  • HTML to PDF/Blink/Adding-signature-field-to-PDF-converted-from-HTML/.NET/Adding-signature-field-to-PDF-converted-from-HTML

3 files changed

+63
-88
lines changed

‎HTML to PDF/Blink/Adding-signature-field-to-PDF-converted-from-HTML/.NET/Adding-signature-field-to-PDF-converted-from-HTML/Data/Test.html

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@@ -1,36 +1,22 @@
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<!DOCTYPE html>
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<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta charset="utf-8" />
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<title>Test Document</title>
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<title>Form Template - Signature</title>
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</head>
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<body>
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<form method="POST">
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Sample Report Data: <br />
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<h3>Sample Form Data</h3>
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<table style="border: solid 1px red; margin: 5px" cellpadding="5px">
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<tr>
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<td>Field 1:</td>
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<td><input type="text" id="field1" name="field1" value="FIELD1VALUE" /></td>
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</tr>
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<tr>
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<td>Field 2:</td>
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<td><input type="text" id="Text2" value="FIELD2VALUE" /></td>
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</tr>
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<tr>
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<td>Field 3:</td>
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<td><input type="text" id="Text3" value="FIELD3VALUE" /></td>
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</tr>
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<tr>
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<td>Field 4:</td>
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<td><input type="text" id="Text4" value="FIELD4VALUE" /></td>
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</tr>
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<tr>
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<td>Signature:</td>
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<td><textarea id="ClientSignature" style="background-color:LightCyan;border-color:Gray;border-width:1px;border-style:Solid;height:50px;width:200px;abcpdf-tag-visible: true"
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rows="2" cols="20"></textarea></td>
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<td>
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<textarea id="signature" name="signature" placeholder="Sign here..."
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style="background-color:LightCyan;border:1px solid Gray;height:50px;width:200px;">
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</textarea>
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</td>
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</tr>
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</table>
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</table>
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</form>
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</body>
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</html>

‎HTML to PDF/Blink/Adding-signature-field-to-PDF-converted-from-HTML/.NET/Adding-signature-field-to-PDF-converted-from-HTML/Output/Output.pdf

-43.4 KB
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‎HTML to PDF/Blink/Adding-signature-field-to-PDF-converted-from-HTML/.NET/Adding-signature-field-to-PDF-converted-from-HTML/Program.cs

+55-66
Original file line numberDiff line numberDiff line change
@@ -1,89 +1,78 @@
1-
using Syncfusion.Pdf.Graphics;
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using Syncfusion.Pdf;
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using Syncfusion.Drawing;
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using Syncfusion.Drawing;
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using Syncfusion.HtmlConverter;
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using Syncfusion.Pdf.Interactive;
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using Syncfusion.Pdf;
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using Syncfusion.Pdf.Parsing;
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using Syncfusion.Pdf.Interactive;
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namespace Create_PDF
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internal class Program
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{
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internal class Program
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static void Main(string[] args)
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{
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static void Main(string[] args)
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// Initialize the HTML to PDF converter using the Blink rendering engine
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HtmlToPdfConverter htmlConverter = new HtmlToPdfConverter();
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// Configure the converter to preserve form fields in the PDF
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BlinkConverterSettings settings = new BlinkConverterSettings
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{
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//Initialize the HTML to PDF converter.
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HtmlToPdfConverter htmlConverter = new HtmlToPdfConverter();
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EnableForm = true // Ensures form elements like <input>, <textarea> are converted to PDF fields
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};
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htmlConverter.ConverterSettings = settings;
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BlinkConverterSettings settings = new BlinkConverterSettings();
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//Set enable form
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settings.EnableForm = true;
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//Assign Blink converter settings to HTML converter
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htmlConverter.ConverterSettings = settings;
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// Convert the HTML file to a PDF document
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PdfDocument document = htmlConverter.Convert(Path.GetFullPath(@"Data/Test.html"));
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//Convert HTML to PDF
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PdfDocument document = htmlConverter.Convert(Path.GetFullPath("Data/Test.html"));
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document.Form.SetDefaultAppearance(false);
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using (MemoryStream stream = new MemoryStream())
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{
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document.Save(stream);
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stream.Position = 0;
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document.Close(true);
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//Add signature field in PDF.
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AddSignature(stream);
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}
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// Optional: Remove default appearances for form fields to match the page style
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document.Form.SetDefaultAppearance(false);
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// Save the PDF to a memory stream for further processing
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using (MemoryStream stream = new MemoryStream())
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{
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document.Save(stream); // Save converted PDF to memory
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stream.Position = 0; // Reset stream position
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document.Close(true); // Close the original document
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// Replace the "signature" textarea with an actual signature field
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AddPdfSignatureField(stream);
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}
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/// <summary>
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/// Adds signature field in PDF
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/// </summary>
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/// <param name="stream"></param>
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static void AddSignature(MemoryStream stream)
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}
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/// <summary>
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/// Finds the "signature" field in the form, removes it, and replaces it with a true PDF signature field.
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/// </summary>
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/// <param name="stream">MemoryStream containing the PDF document</param>
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static void AddPdfSignatureField(MemoryStream stream)
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{
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// Load the PDF document from memory stream
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using (PdfLoadedDocument loadedDocument = new PdfLoadedDocument(stream))
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{
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//Load the PDF document.
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PdfLoadedDocument loadedDocument = new PdfLoadedDocument(stream);
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//Get the loaded form.
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PdfLoadedForm loadedForm = loadedDocument.Form;
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List<PdfSignatureField> signatureFields = new List<PdfSignatureField>();
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for (int i = loadedForm.Fields.Count - 1; i >= 0; i--)
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// Check for a field named "signature"
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if (loadedForm.Fields["signature"] is PdfLoadedTextBoxField signatureTextBox)
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{
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// Get the original field's position and page
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RectangleF bounds = signatureTextBox.Bounds;
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PdfPageBase page = signatureTextBox.Page;
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if (loadedForm.Fields[i] is PdfLoadedTextBoxField)
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{
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//Get the loaded text box field and fill it.
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PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[i] as PdfLoadedTextBoxField;
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if (loadedTextBoxField.Name.Contains("textarea"))
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{
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//Get bounds from an existing textbox field.
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RectangleF bounds = loadedTextBoxField.Bounds;
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//Get page.
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PdfPageBase loadedPage = loadedTextBoxField.Page;
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//Create PDF Signature field.
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PdfSignatureField signatureField = new PdfSignatureField(loadedPage, loadedTextBoxField.Name.Trim());
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// Remove the original textbox field
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loadedForm.Fields.Remove(signatureTextBox);
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//Set properties to the signature field.
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signatureField.Bounds = bounds;
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//Add the form field to the document.
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signatureFields.Add(signatureField);
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// Create a new signature field at the same location
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PdfSignatureField signatureField = new PdfSignatureField(page, "ClientSignature")
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{
63+
Bounds = bounds
64+
};
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74-
loadedForm.Fields.Remove(loadedTextBoxField);
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}
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}
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// Add the new signature field to the form
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loadedForm.Fields.Add(signatureField);
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}
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foreach (PdfSignatureField signature in signatureFields)
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{
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loadedForm.Fields.Add(signature);
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}
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//Save the document.
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using (FileStream outputStream1 = new FileStream(Path.GetFullPath(@"Output/Output.pdf"), FileMode.Create, FileAccess.ReadWrite))
69+
70+
// Save the modified document to disk
71+
using (FileStream outputStream = new FileStream(Path.GetFullPath(@"Output/Output.pdf"), FileMode.Create, FileAccess.Write))
8472
{
85-
loadedDocument.Save(outputStream1);
73+
loadedDocument.Save(outputStream);
8674
}
75+
// Close the document and release resources
8776
loadedDocument.Close(true);
8877
}
8978
}

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