Merge pull request #218 from SyncfusionExamples/Task-935636-FlattenField

Task-935636-How to preserve form fields after creating template from the PDF document

Author: chinnumuniyappan

Forms/Preserve-Formfields- in-the-Template-created-from-existing-PDF/Preserve-Formfields- in-the-Template-created-from-existing-PDF.slnx

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+<Solution>
+  <Project Path="Preserve-Formfields- in-the-Template-created-from-existing-PDF/Preserve-Formfields- in-the-Template-created-from-existing-PDF.csproj" />
+</Solution>

Forms/Preserve-Formfields- in-the-Template-created-from-existing-PDF/Preserve-Formfields- in-the-Template-created-from-existing-PDF/Data/Input.pdf

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Preserve_Formfields__in_the_Template_created_from_existing_PDF</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.Pdf.Net.Core" Version="*" />
+  </ItemGroup>
+
+</Project>

Forms/Preserve-Formfields- in-the-Template-created-from-existing-PDF/Preserve-Formfields- in-the-Template-created-from-existing-PDF/Preserve-Formfields- in-the-Template-created-from-existing-PDF.csproj

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+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Parsing;
+using System.IO;
+
+PdfLoadedDocument loadedDocument = new PdfLoadedDocument(Path.GetFullPath(@"Data/Input.pdf"));
+//Flatten all form fields to make them part of the page graphics.
+PdfLoadedForm loadedForm = loadedDocument.Form;
+loadedForm.FlattenFields();
+
+//Create a template from the first page.
+PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
+PdfTemplate template = loadedPage.CreateTemplate();
+
+//Create the destination PDF (no page margins so the template fills it edge-to-edge).
+PdfDocument newDocument = new PdfDocument();
+newDocument.PageSettings.Margins.All = 0;
+PdfPage newPage = newDocument.Pages.Add();
+
+//Draw the template so it fills the entire new page.
+newPage.Graphics.DrawPdfTemplate(
+    template,
+    PointF.Empty,
+    new SizeF(newPage.Size.Width, newPage.Size.Height));
+
+//Save the result.
+newDocument.Save(Path.GetFullPath(@"Output/Output.pdf"));
+
+//Close documents.
+loadedDocument.Close(true);
+newDocument.Close(true);