Telerik dropdown bind on index change event need good practices comments?

[Himanshu]

I have a telerik drop down box inside a Telerik grid's edit form. When user change the value of a dropdown i called server side event and binds/sets others dropdowns as below code:

Protected Sub RdCmbTpcType_IndexChanged _
        (ByVal sender As Object, ByVal e As RadComboBoxSelectedIndexChangedEventArgs)
     
        Dim ddlTpcType As RadComboBox = DirectCast(sender, RadComboBox)
        Dim editItem As GridEditableItem = DirectCast(ddlTpcType.NamingContainer,  _
            GridEditableItem)
        Dim ddlTpcInvoiceItemLevel As RadComboBox = _
            DirectCast(editItem.FindControl("rdcmbTPCInvoiceItemLevel"), RadComboBox)
        Dim ddlTpcRateType As RadComboBox = _
           DirectCast(editItem.FindControl("rdcmbTPCRateType"), RadComboBox)
        Dim ddlTpcFeeCode As RadComboBox = DirectCast(editItem.FindControl _
            ("rdcmbTPCFeeCode"), RadComboBox)

        If (ddlTpcType.SelectedValue = CommissionTypes.Premium) Then
            BindDropDown(ddlTpcInvoiceItemLevel, ReturnPremiumsView, _
                         "InvoiceItemLevel", "InvoiceItemID")
            ddlTpcFeeCode.Enabled = False

        ElseIf (ddlTpcType.SelectedValue = CommissionTypes.Fee) Then
            BindDropDown(ddlTpcInvoiceItemLevel, ReturnFeesView, _
                         "InvoiceItemLevel", "InvoiceItemID")
            BindTpcFeeCode(editItem)
            ddlTpcFeeCode.Enabled = True
        Else
            ddlTpcRateType.SelectedValue = 0

        End If

        EnableDisablePaging("TPCClassToHidePageSelector", "TPCClassToHidePageResizer", "true")

    End Sub


So my question is like i want to minimize this method by using any inbuilt/custom ways which can be provided by Telerik or do i have to directcast all control and do code like above for all these type of events?

Any suggestion will be helpful.

[Konstantin Dikov]

Hi Himanshu,

The approach that you are currently using is the one that should be used, since there is no built-in functionality to support it. Also, getting reference to each of the RadComboBox controls could not be avoided and it is the only way to achieve the desired result.


Regards,
Konstantin Dikov
Telerik

[Himanshu]

Thanks Konstantin.