Introduction

public static void MovePage()
{
  Console.WriteLine( "=== Move PAGE ===" );
  var outputFileName = "MovePage.pdf";
  var outputPath = PagesSample.PagesSampleOutputDirectory + 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( "Move Page", titleStyle, new ParagraphStyle( ParagraphHorizontalAlignment.Center ) );

    // Defines a TextStyle that will be used for the following texts.
    var textStyle = TextStyle.WithFont( pdfoutput.Fonts.GetStandardFont( StandardFontType.Helvetica ), 18 );

    // Adds text on the first Page.
    page.AddText( "This text is on page 1 .", new Point( 30, 100 ), textStyle );

    for( int i = 1; i < 5; ++i )
    {
      // Adds a new Page.
      page = pdfoutput.Pages.Add();

      // Adds text on the added Page.
      page.AddText( $"This text is on the page {i + 1}.", new Point( 30, 100 ), textStyle );
    }

    // Moves the Page located at index 1 to its new position at index 3.
    pdfoutput.Pages.Move( 1, 3 );

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