Select e.DataCol.Name Case "作业日期","工程" If e.DataRow.IsNull("作业日期") OrElse e.DataRow.IsNull("工程") Then e.DataRow("编号") = Nothing Else Dim fd As Date = Date.Today Dim ld As Date = fd.AddDays(1) Dim bh As String = e.DataRow("工程") & "-" & Format(fd,"yyyyMMdd") & "-" '生成编号的前缀 If e.DataRow("编号").StartsWith(bh) = False '如果编号前缀不符 Dim max As String Dim idx As Integer Dim flt As String flt = "工程 = '"& e.DataRow("工程") & "' And 作业日期 >= #" & fd & "# And 作业日期 < #" & ld & "# And [_Identify] <> " & e.DataRow("_Identify") max = e.DataTable.Compute("Max(编号)",flt) '取得该月的相同工程的最大编号 If max > "" Then '如果存在最大编号 idx = CInt(max.Substring(bh.Length)) + 1 '获得最大编号的后四位顺序号,并加1 Else idx = 1 '否则顺序号等于1 End If e.DataRow("编号") = bh & Format(idx,"0000") End If End If End Select
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