Select Case e.DataCol.Name Case "名称","模号" Dim dr1 As DataRow = e.DataRow If dr1.IsNull("标准模号") Then messagebox.show("1") Dim dr2 As DataRow = DataTables("库存表").Find("名称 = '" & dr1("名称") & "' And 模号 = '" & dr1("模号") & "'") If dr2 IsNot Nothing Then dr1("标准模号") = dr2("标准模号") End If End If End Select