主题：BOM中如何防止子件与父件嵌套(OK)

Datacolchanged事件

'检查子件与父件是否嵌套
Select e.DataCol.name
    Case "产品编码","父件编码"
        If e.DataRow.IsNull("产品编码") = False AndAlso e.DataRow.IsNull("父件编码") = False Then
            Dim pdr As DataRow = e.DataRow
            Do While pdr IsNot Nothing
                pdr = e.DataTable.Find("父件编码 = '" & pdr("产品编码") & "'")
                If pdr IsNot Nothing Then
                    If pdr("产品编码") = e.DataRow("父件编码") Then
                        msgbox("嵌套")
                        e.DataRow("父件编码") = Nothing
                    End If
                End If
            Loop
        End If
End Select