Add Sample for use conditional fields to add check boxes during mail-merge

Mail-Merge/Add-checkbox-using-IF-field/Add-checkbox-using-IF-field.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.12.35417.141 d17.12
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Add-checkbox-using-IF-field", "Add-checkbox-using-IF-field\Add-checkbox-using-IF-field.csproj", "{CDB67E3F-6956-4FC5-8BC1-E4DB0A71C62E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CDB67E3F-6956-4FC5-8BC1-E4DB0A71C62E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CDB67E3F-6956-4FC5-8BC1-E4DB0A71C62E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CDB67E3F-6956-4FC5-8BC1-E4DB0A71C62E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CDB67E3F-6956-4FC5-8BC1-E4DB0A71C62E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

Mail-Merge/Add-checkbox-using-IF-field/Add-checkbox-using-IF-field/Add-checkbox-using-IF-field.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Add_checkbox_using_IF_field</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="Syncfusion.DocIO.Net.Core" Version="*" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<None Update="Data\Sample.docx">
+		  <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</None>
+		<None Update="Data\Template.docx">
+		  <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</None>
+		<None Update="Output\.gitkeep">
+			<CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</None>
+	</ItemGroup>
+
+</Project>

Mail-Merge/Add-checkbox-using-IF-field/Add-checkbox-using-IF-field/Output/.gitkeep

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+

Mail-Merge/Add-checkbox-using-IF-field/Add-checkbox-using-IF-field/Program.cs

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+using Syncfusion.DocIO;
+using Syncfusion.DocIO.DLS;
+
+using (FileStream inputStream = new FileStream(Path.GetFullPath(@"Data/Template.docx"), FileMode.OpenOrCreate, FileAccess.ReadWrite))
+{
+    //Opens the template Word document.
+    using (WordDocument wordDocument = new WordDocument(inputStream, FormatType.Docx))
+    {
+        // Set default values for the merge fields
+        string[] fieldNames = { "Name", "Email", "AgreeToTerms", "SubscribeNewsletter" };
+        string[] fieldValues = { "Nancy", "[email protected]", "Yes", "No" };
+
+        // Execute mail merge to replace merge fields with actual values.
+        wordDocument.MailMerge.Execute(fieldNames, fieldValues);
+
+        // Update any fields in the document to reflect the changes made during the mail merge.
+        wordDocument.UpdateDocumentFields();
+
+        // Set up font substitution settings for handling missing fonts.
+        wordDocument.FontSettings.SubstituteFont += FontSettings_SubstituteFont;
+
+        // Save the modified document.
+        using (FileStream outputStream1 = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.OpenOrCreate, FileAccess.ReadWrite))
+        {
+            wordDocument.Save(outputStream1, FormatType.Docx);
+        }
+    }
+}
+
+/// <summary>
+/// Handles font substitution when a required font is unavailable in the document.
+/// </summary>
+static void FontSettings_SubstituteFont(object sender, SubstituteFontEventArgs args)
+{
+    // Display the name of the original font that needs substitution
+    Console.WriteLine(args.OriginalFontName);
+}