Invalid Cast

[lothos12345]

At the following code line it is giving me an invalid cast exception not sure why. Keeping in mind that option strict is on. Any given would be greatly appreiciated.

 

Dim tindex as integer

 

tindex = Convert.ToInt32(ComboBox4.SelectedValue)

[betrl8thanever]

Its going to depend a lot on where your code is actually executing.

 

You might try

If (Me.ComboBox4.SelectedIndex <> -1) Then
  Dim tindex as Integer = CInt(Me.ComboBox4.SelectedItem.ToString())
End If

[lothos12345]

Did not work

 

No unforunately it did not work, it through the same error.

[PlausiblyDamp]

If you step through the code in the debugger what is the value of SelectedIndex when the error occurs?

[lothos12345]

SelectedIndex

 

The selectedindex value is 0. Because it loads the DisplayMembers of the Combobox on the initial load.

[PlausiblyDamp]

Sorry - I meant what is the value for the SelectedValue?

[snarfblam]

Is there a SelectedValue property? Or are you referring to SelectedItem? Like PlausiblyDamp said, check the value of SelectedItem (or SelectedItem.ToString). Could be that it is nothing or an invalid string. Check either that (.SelectedIndex <> -1) or that (Not .SelectedItem Is Nothing).