Save As
RadPdfViewer enables you to save the loaded document to a file on the file system.
Figure 1: Save As button in RadPdfViewerNavigator
Saving in Code-Behind
You can save the loaded document programmatically by using the SaveDocument method of RadPdfViewer from your code.
Save As
this.radPdfViewer1.SaveDocument(filePath);
Me.RadPdfViewer1.SaveDocument(filePath)