995577: Added image as background in PDF document.

Images/Add-image-as-background-in-PDF/.NET/Add-image-as-background-in-PDF.slnx

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+<Solution>
+  <Project Path="Add-image-as-background-in-PDF/Add-image-as-background-in-PDF.csproj" />
+</Solution>

Images/Add-image-as-background-in-PDF/.NET/Add-image-as-background-in-PDF/Add-image-as-background-in-PDF.csproj

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

Images/Add-image-as-background-in-PDF/.NET/Add-image-as-background-in-PDF/Program.cs

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+using Syncfusion.Drawing;
+using Syncfusion.Pdf;
+using Syncfusion.Pdf.Graphics;
+
+// Create the new PDF document
+using (PdfDocument document = new PdfDocument())
+{
+    //Set margin
+    document.PageSettings.Margins.All = 0;
+    // Add a new page to the document
+    PdfPage page = document.Pages.Add();
+    // Get the client size
+    SizeF clientSize = page.GetClientSize();
+    // Load the background image from disk
+    using FileStream imageStream = new FileStream(
+        Path.GetFullPath(@"Data/Image.jpg"),
+        FileMode.Open,
+        FileAccess.Read
+    );
+    PdfBitmap image = new PdfBitmap(imageStream);
+    // Save the current graphics state, apply transparency, draw the image to cover the page, then restore.
+    PdfGraphicsState state = page.Graphics.Save();
+    page.Graphics.SetTransparency(0.2f); // 20% opacity for the background image
+    page.Graphics.DrawImage(
+        image,
+        new PointF(0, 0),
+        new SizeF(clientSize.Width, clientSize.Height)
+    );
+    page.Graphics.Restore(state);
+    // Define a margin for the text content.
+    const float margin = 40f;
+    // Text bounds: fill the page within margins.
+    RectangleF textBounds = new RectangleF(
+        margin,
+        margin,
+        clientSize.Width - margin * 2,
+        clientSize.Height - margin * 2
+    );
+    // Body font for the paragraph.
+    PdfFont bodyFont = new PdfStandardFont(PdfFontFamily.TimesRoman, 16, PdfFontStyle.Regular);
+    // Sample paragraph text.
+    string paragraphText =
+        "Adventure Works Cycles, the fictitious company on which the AdventureWorks sample databases " +
+        "are based, is a large, multinational manufacturing company. The company manufactures and sells " +
+        "metal and composite bicycles to North American, European and Asian commercial markets. While " +
+        "its base operation is located in Washington with 290 employees, several regional sales teams " +
+        "are located throughout their market base.";
+    // Create a text element and configure layout to paginate if content exceeds current page.
+    PdfTextElement textElement = new PdfTextElement(paragraphText, bodyFont, PdfBrushes.Black);
+    PdfLayoutFormat layoutFormat = new PdfLayoutFormat
+    {
+        Break = PdfLayoutBreakType.FitPage, // Fit within page bounds
+        Layout = PdfLayoutType.Paginate      // Continue to subsequent pages if needed
+    };
+    // Draw the text paragraph in the defined bounds.
+    textElement.Draw(page, textBounds, layoutFormat);
+    // Save the PDF document to disk.
+    document.Save(Path.GetFullPath(@"Output/Output.pdf"));
+}