Select e.DataCol.Name
Case "合同编号"
If e.DataRow.IsNull("合同编号") Then
e.DataRow("财务编号") = Nothing
Else
Dim str() As String = e.DataRow("合同编号").split("-")
Dim lb As String = str(1) & "-" & str(3) & "-"
If e.DataRow("财务编号").StartsWith(lb) = False
Dim max As String
Dim idx As Integer
max = e.DataTable.Compute("Max(财务编号)","合同编号 = '" & e.DataRow("合同编号") & "' And [_Identify] <> " & e.DataRow("_Identify")) '取得该类别的最大编号
If max > "" Then '如果存在最大编号
idx = CInt(max.Substring(lb.length)) + 1 '获得最大编号的后三位顺序号,并加1
Else
idx = 1 '否则顺序号等于1
End If
e.DataRow("财务编号") = lb & Format(idx,"000")
End If
End If
End Select