Drop Down Box - Required Validation

[Rick]

I am trying to add a Required validation to a bound Drop Down Box.  I have code that does this for a text box and it works, but it doesn't work for a Drop Down box.

This Works:

    Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemCreated


        If TypeOf e.Item Is GridEditableItem AndAlso e.Item.IsInEditMode Then


            Dim item As GridEditableItem = TryCast(e.Item, GridEditableItem)
            Dim editor As GridTextBoxColumnEditor = DirectCast(item.EditManager.GetColumnEditor("CurrencyTarget_NativeCurrent"), GridTextBoxColumnEditor)
            Dim cell As TableCell = DirectCast(editor.TextBoxControl.Parent, TableCell)
            Dim validator As New CompareValidator ' RequiredFieldValidator()


            editor.TextBoxControl.ID = "NCReqValidator"
            validator.ControlToValidate = editor.TextBoxControl.ID
            validator.Operator = ValidationCompareOperator.GreaterThanEqual
            validator.ValueToCompare = "0"
            validator.ErrorMessage = "* Native Current is a required field"
            cell.Controls.Add(validator)

        End If
End Sub

But when I add the same code for a drop down box, it does not:

    Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemCreated


        If TypeOf e.Item Is GridEditableItem AndAlso e.Item.IsInEditMode Then
            Dim item2 As GridEditableItem = TryCast(e.Item, GridEditableItem)
            Dim editor2 As GridDropDownListColumnEditor = DirectCast(item2.EditManager.GetColumnEditor("ddCountryCode"), GridDropDownListColumnEditor)
            Dim cell2 As TableCell = DirectCast(editor2.DropDownListControl.Parent, TableCell)
            Dim validator2 As New CompareValidator ' RequiredFieldValidator()

            editor2.DropDownListControl.ID = "CCReqValidator"
            validator2.ControlToValidate = editor2.DropDownListControl.ID
            validator2.Operator = ValidationCompareOperator.NotEqual
            validator2.ValueToCompare = "XXX"
            validator2.ErrorMessage = "* Country Code is a required field"
            cell2.Controls.Add(validator2)

        End If


    End Sub

[Pavlina]

Hi Rick,

Check out the forum thread linked below and see if it helps:
http://www.telerik.com/community/forums/aspnet-ajax/grid/grid-dropdown-list-validation-error.aspx

Best wishes,
Pavlina
the Telerik team