More or less, I have the following code:

Sub Command1_Click

CR.ReportLayout = .....
CR.Action = 1
Unload Me

End Sub

in my visual basic, whenever I run it, it has the Crystal Report preview window flash and then the program (include the preview window) terminated.

How I can display the preview window, and until the user close the preview, and then my vb unload the form(end the program)

Thanks