RadGridView CurrentRowChanged blows up form

[Bkoenig]

Hello,

I can't seem to figure this error out.  When I add the code below to the code for my main form it will throw the exception "An error occurred creating the form. See Exception.InnerException for details.  The error is: Object reference not set to an instance of an object."

The form is to manage a series of applications I have been creating.  The grid view shows a list of banned users and allows for Editing of the records as well as showing them.  I have a few text boxes that act as a form so when a row is selected, data is shown there.

Private Sub Bans_Grid_CurrentRowChanged(sender As Object, e As Telerik.WinControls.UI.CurrentRowChangedEventArgs) Handles Bans_Grid.CurrentRowChanged
Bans_Name_txt.Text = e.CurrentRow.Cells.Item(3).Value.ToString  'It breaks on this line.

End Sub

I know its this line because if I comment it out the form loads perfectly fine.

[Stefan]

Hello Brendon,

Thank you for writing.

I am not sure how this code even compiles as the Cells property of the CurrentRow does not have Items property. The correct line would be:

Bans_Name_txt.Text = e.CurrentRow.Cells(3).Value.ToString()

If this is not the case, please provide me with a sample where I can reproduce the experienced exception and I will investigate the reasons causing it.

Regards,
Stefan
Telerik

[Bkoenig]

Hello Stefan,

Unfortunately I reworked my design to get rid of this form, but I will see if I can create a sample to assist in solving this problem.  It will take me some time with my current schedule however.

Also that code was written using Intellisense which said that it was a valid command.

Thank you,
Brendon

[Bkoenig]

Hello,

I was able to create a test project and the error occurred on both .net 4.0 and .net 4.5 and with both my original code and your code.

A support ticket was placed to submit the solution with the ID 717125

Thank you

[Stefan]

Hi,

I am copying my answer from the support thread so the community can benefit from it: 

As I mentioned, there is not Item property so this is why you are getting the exception. Also, you grid has no data in it, so it is expected to receive the exception you see. Once you populate it with data, here is the code you can use:

Private Sub Bans_Grid_CurrentRowChanged(sender As Object, e As Telerik.WinControls.UI.CurrentRowChangedEventArgs) Handles Bans_Grid.CurrentRowChanged
      If e.CurrentRow.Cells(3).Value IsNot Nothing Then
          Bans_Name_txt.Text = e.CurrentRow.Cells(3).Value.ToString()
      End If
  End Sub

The code above assumes that you have at least 4 columns in the grid, as it is trying to access the value of the fourth cell in the current row.
 
Regards,
Stefan
Telerik