Front side code
<telerik:GridButtonColumn ConfirmText="Delete this voucher?" ConfirmDialogType="RadWindow" HeaderText="DELETE"
ConfirmTitle="Delete" ButtonType="ImageButton" CommandName="Delete" ConfirmDialogHeight="100px"
ConfirmDialogWidth="220px" UniqueName="delete" />
Back side code
Private Sub RadGrid1_ItemDataBound(sender As Object, e As GridItemEventArgs) Handles RadGrid1.ItemDataBound
If TypeOf e.Item Is Telerik.Web.UI.GridDataItem Then
'access to the form
Dim oItem As GridDataItem = DirectCast(e.Item, GridDataItem)
'access to the data
Dim oRow As DataRowView = CType(e.Item.DataItem, DataRowView)
'get the batch number from the data
Dim strBatchNumber As String = oRow("bachnumb")
'get a reference to the delete button
Dim btnDelete As ImageButton = CType(oItem("delete").Controls(0), ImageButton)
'conditionally hide it
If strBatchNumber <> "OPEN" Then
btnDelete.Visible = False
End If
End If
End Sub