RadGrid. Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

[Bogdan]

When I click on  btnAssignId, grdResult has 4 rows, but in debug mode in loop I see 5 iterations and on 5th Exeption throw
at line where I try GetDataKeyValue

Private Sub btnAssignId_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAssignExistingId.Click

  If Not String.IsNullOrEmpty(tbMatlID.SelectedValue) Then

    For Each item As GridItem In grdResult.Items

      If item IsNot Nothing Then

        Dim griddata = CType(item, GridDataItem)
   Dim resultId = griddata.GetDataKeyValue("ResultId")

        Update(resultId, tbMatlID.SelectedValue)

      End If 

    Next

  End If

End Sub

[Eyup]

Hello Bogdan,

I have created a sample RadGrid web site to test the described behavior. On my side everything works as expected and the the items collection returns the correct count. Please check out the attached application and let me know about the result.

Kind regards,
Eyup
the Telerik team

[William]

In my case, it is because the last page of grid has less items than the page size. For example, if the page size is 10, but the last page only have 5 items. Then it will throw this IndexOutOfRange Exception in method GetDataKeyValue.

I'm lazy, so I just try-catch that line

[Eyup]

Hi William,

Thank you for sharing your approach with our community.

Feel free to mention if you had another experience in this case.