264229 Added sample for added radio button fields in multiple PDF pages

Forms/Multi‑Page-PDF-Radio-Button-Group-Synchronization/.NET/Multi‑Page-PDF-Radio-Button-Group-Synchronization.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36616.10 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Multi‑Page-PDF-Radio-Button-Group-Synchronization", "Multi‑Page-PDF-Radio-Button-Group-Synchronization\Multi‑Page-PDF-Radio-Button-Group-Synchronization.csproj", "{268276E6-E841-4FDC-BA43-80B6A95921CE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{268276E6-E841-4FDC-BA43-80B6A95921CE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{268276E6-E841-4FDC-BA43-80B6A95921CE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{268276E6-E841-4FDC-BA43-80B6A95921CE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{268276E6-E841-4FDC-BA43-80B6A95921CE}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {05CFF1BA-A827-4272-A101-1018EB8FC017}
+	EndGlobalSection
+EndGlobal

Forms/Multi‑Page-PDF-Radio-Button-Group-Synchronization/.NET/Multi‑Page-PDF-Radio-Button-Group-Synchronization/Multi‑Page-PDF-Radio-Button-Group-Synchronization.csproj

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

Forms/Multi‑Page-PDF-Radio-Button-Group-Synchronization/.NET/Multi‑Page-PDF-Radio-Button-Group-Synchronization/Program.cs

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+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Graphics;
+using Syncfusion.Pdf.Interactive;
+
+// Create a new PDF document
+using (PdfDocument document = new PdfDocument())
+{
+    // Create two pages
+    PdfPage page1 = document.Pages.Add();
+    PdfPage page2 = document.Pages.Add();
+    // Access the form
+    PdfForm form = document.Form;
+    form.FieldAutoNaming = false;
+    // Label font
+    PdfFont labelFont = new PdfStandardFont(PdfFontFamily.Helvetica, 12f, PdfFontStyle.Regular);
+    // Group name
+    string groupName = "EmployeesRadioGroup";
+    float labelOffsetX = 10f;
+    float labelOffsetY = -2f;
+    // Create ONE radio button list field (anchor it on the first page; items can be on any page)
+    PdfRadioButtonListField radioField = new PdfRadioButtonListField(page1, groupName)
+    {
+        // Keep standard radio behavior: only one selection in the group
+        AllowUnisonSelection = false
+    };
+    // Define the 4 radio items: 2 on page 1, 2 on page 2
+    var items = new (PdfPage page, string export, RectangleF bounds, string label)[]
+    {
+                    (page1, "rb1", new RectangleF(100f, 200f, 20f, 20f), "Radio Button 1"),
+                    (page1, "rb2", new RectangleF(100f, 240f, 20f, 20f), "Radio Button 2"),
+                    (page2, "rb3", new RectangleF(100f, 200f, 20f, 20f), "Radio Button 3"),
+                    (page2, "rb4", new RectangleF(100f, 240f, 20f, 20f), "Radio Button 4"),
+    };
+    // Add items to the single radio field and draw their labels
+    foreach (var (page, export, bounds, label) in items)
+    {
+        PdfRadioButtonListItem item = new PdfRadioButtonListItem(page, export)
+        {
+            Bounds = bounds
+        };
+        radioField.Items.Add(item);
+        // Label beside the radio button
+        page.Graphics.DrawString(label, labelFont, PdfBrushes.Black,
+            bounds.Right + labelOffsetX, bounds.Y + labelOffsetY);
+    }
+    // Set default selection
+    radioField.SelectedValue = "rb4";
+    // Add the single field to the form
+    form.Fields.Add(radioField);
+    // Save the PDF document
+    document.Save(Path.GetFullPath(@"Output/Output.pdf"));
+}