RadGrid DropDown column with multi-select

[Roger McCoy]

Trying to get a DropDown on a RadGrid to use multi-select. Is this even possible? This is what I've tried so far:

        <telerik:GridDropDownColumn DataField="txtOfficeID" DataSourceID="dsOffices"
            HeaderText="Office" ListTextField="Office_Name" ListValueField="Office_ID"
            SortExpression="txtOfficeID" UniqueName="txtOfficeID">
        </telerik:GridDropDownColumn>

    Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemCreated
        If TypeOf e.Item Is GridEditFormItem And e.Item.IsInEditMode Then
            Dim EditFormItem As GridEditFormItem = CType(e.Item, GridEditFormItem)
            Dim DropDown As RadComboBox = EditFormItem("txtOfficeID").Controls(0)
            DropDown.AllowCustomText = True
            DropDown.AutoCompleteSeparator = ","
        End If
    End Sub

[Roger McCoy]

Never mind. Page was pointing to the wrong .vb file.