UG documentation 1031327: Prepare FAQ for How to add header and footer image for pdf?

Excel to PDF/HeaderFooterInPDF/.NET/HeaderFooterInPDF/HeaderFooterInPDF.slnx

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+<Solution>
+  <Project Path="HeaderFooterInPDF/HeaderFooterInPDF.csproj" />
+</Solution>

Excel to PDF/HeaderFooterInPDF/.NET/HeaderFooterInPDF/HeaderFooterInPDF/HeaderFooterInPDF.csproj

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

Excel to PDF/HeaderFooterInPDF/.NET/HeaderFooterInPDF/HeaderFooterInPDF/Program.cs

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+using Syncfusion.Pdf;
+using Syncfusion.XlsIO;
+using Syncfusion.XlsIORenderer;
+using Syncfusion.Drawing;
+using System.Drawing;
+
+class Program
+{
+    static void Main(string[] args)
+    {
+        //Initialize Excel Engine
+        using (ExcelEngine excelEngine = new ExcelEngine())
+        {
+            IApplication application = excelEngine.Excel;
+            //Load the existing Excel document
+            IWorkbook workbook = application.Workbooks.Open(Path.GetFullPath(@"Data\InputTemplate.xlsx"));
+
+            Image headerImage = Image.FromStream(File.OpenRead(Path.GetFullPath(@"Data\Syncfusion.png")));
+            foreach (IWorksheet sheet in workbook.Worksheets)
+            {
+                // IMPORTANT: put the image placeholder in the header/footer text
+                sheet.PageSetup.CenterHeader = "&G";
+                sheet.PageSetup.CenterFooter = "&G";
+
+                // then assign the Image object
+                sheet.PageSetup.CenterHeaderImage = headerImage;
+                sheet.PageSetup.CenterFooterImage = headerImage;
+            }
+
+            XlsIORenderer renderer = new XlsIORenderer();
+            XlsIORendererSettings rendererSettings = new XlsIORendererSettings();
+            rendererSettings.HeaderFooterOption.ShowHeader = true;
+            rendererSettings.HeaderFooterOption.ShowFooter = true;
+
+
+            using (PdfDocument tempDoc = renderer.ConvertToPDF(workbook, rendererSettings))
+            {
+                tempDoc.Save(Path.GetFullPath(@"Output\ConvertedDocument.pdf"));
+            }
+        }
+    }
+}