Progress Bar

[muhammadanzar]

Dear Developer's
hi
i have three forms in my application. First form use for the user selection criteria for the Report. But Report Loading take 2 to 3 minutes i want to show progress bar during this delay period. when i try to show progress bar it work nice but when form close method throw the Exception

 

[cjard]

What Exception?

 

[muhammadanzar]

An unhandled exception of type 'System.NullReferenceException' occurred in Progress Bar.exe

 

[muhammadanzar]

Here is my code
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If ProgressBar1.Value < 100 Then
ProgressBar1.Value += 5
Else
Dim frm As Form1
ProgressBar1.Dispose()
frm.Close()
End If

 

[cjard]

http://msdn.microsoft.com/library/e...lreferenceexceptionClasstopic.asp?frame=false