Introduction

public static void GetWatermarks()
{
  Console.WriteLine( "=== GET WATERMARKS ===" );

  // Loads a PdfDocument.
  var loadedDocument = "DocWithWatermarks.pdf";
  using( var pdfInput = PdfDocument.Load( WatermarksSample.WatermarksSampleResourcesDirectory + loadedDocument ) )
  {
    var outputFileName = "GetWatermarks.pdf";
    var outputPath = WatermarksSample.WatermarksSampleOutputDirectory + outputFileName;

    // Creates a PdfDocument.
    using( var pdfOutput = PdfDocument.Create( outputPath ) )
    {
      // Gets the first Page of the document.
      var page = pdfOutput.Pages.First();

      // Adds a title.
      var titleStyle = TextStyle.WithFont( pdfOutput.Fonts.GetStandardFont( StandardFontType.Helvetica ), 15d );
      page.AddParagraph( "Get Watermarks", titleStyle, new ParagraphStyle( ParagraphHorizontalAlignment.Center ) );

      // Adds text.
      var textStyle = TextStyle.WithFontAndColor( pdfOutput.Fonts.GetStandardFont( StandardFontType.Helvetica ), 12, Brushes.Red );
      page.AddText( $"Getting watermarks from document: {loadedDocument}", new Point( 100, 100 ), textStyle );

      // Gets the Watermarks from the loaded document.
      var watermarks = pdfInput.Watermarks;

      // For each Watermark, displays some of its properties.
      for( int i = 0; i < watermarks.Count; ++i )
      {
        var watermark = watermarks[ i ];

        page.AddText( "Watermark " + ( i + 1 ) + ":", new Point( 30, 150 + ( i * 65 ) ) );
        page.AddText( $"  Text: {watermark.Text}", new Point( 30, 165 + ( i * 65 ) ) );
        page.AddText( $"  Font name: {watermark.TextStyle.Font.Name}", new Point( 30, 180 + ( i * 65 ) ) );
        page.AddText( $"  Font size: {watermark.TextStyle.FontSize}", new Point( 30, 195 + ( i * 65 ) ) );
        page.AddText( $"  text color: {( ( SolidColorBrush )watermark.TextStyle.Brush ).Color}", new Point( 30, 210 + ( i * 65 ) ) );
      }

      // Saves the output document.
      pdfOutput.Save();
      Console.WriteLine( $"Info exported to path: {outputFileName}" );
    }
  }
}