How to ignore empty pages while printing the WPF Diagram (SfDiagram)?

The GetPrintInfo virtual method of PrintingService helps to ignore empty pages while printing of WPF Diagram (SfDiagram). This method will invoke with the PrintInfo class as an argument when the page is preparing for the previewing or printing.

Key properties of PrintInfo:

PrintAction: Defines whether preview and print happen in the diagram.

TotalPageCount: Defines total pages to be previewed or printed in the diagram.

CurrentPage: Defines which page is currently in preview or print.

Elements: Defines the objects to be previewed or printed in the diagram.

For example, the Elements property of PrintInfo helps to ignore the empty pages in previewing or printing.

Refer to the following code example and sample.

C#

// Derived class from PrintingService
public class CustomPrint : PrintingService
{
  // Override GetPrintInfo method
  protected override void GetPrintInfo(PrintInfo args)
  {
    // Check whether the current page is empty or not.
    if (args.Elements.Count() == 0)
    {
      args.Cancel = true;
    }
    else
    {
      base.GetPrintInfo(args);
    }
  }
}