Hi,
I am showing my report using CrystalReportViewer.It is having GoTo button for page navigation.
The problem is when user does not enter anything in the text box for GoTo button,and clicks on GoTo icon, it is showing
"CrystalReportViewer – rptViewer
 Use ReportSource or DataBindings property to specify a report source."

Can anybody help me how to check whether user has put valid entry into the textbox.

Thanks,
Allen