即便我参照教程例子 改成如下代码：效果还是末尾永远都是001
Case "录入时间","门店简拼"
If e.DataRow.IsNull("录入时间") OrElse e.DataRow.IsNull("门店简拼") Then
e.DataRow("门店单号") = Nothing
Else
Dim d As Date = e.DataRow("录入时间")
Dim y As Integer = d.Year
Dim m As Integer = d.Month
Dim Days As Integer = Date.DaysInMonth(y,m)
Dim fd As Date = New Date(y,m,1) '获得该月的第一天
Dim ld As Date = New Date(y,m,Days) '获得该月的最后一天
Dim bh As String = e.DataRow("门店简拼") & "-" & Format(d,"yyyyMM") & "-" '生成编号的前缀
If e.DataRow("门店单号").StartsWith(bh) = False '如果门店单号前缀不符
Dim max As String
Dim idx As Integer
Dim flt As String
flt = "门店简拼 = '"& e.DataRow("门店简拼") & "' And 录入时间 >= #" & fd & "# And 录入时间 <= #" & ld & "# And [_Identify] <> " & e.DataRow("_Identify")
max = e.DataTable.Compute("Max(门店单号)",flt) '取得该月的相同门店简拼的最大门店单号
If max > "" Then '如果存在最大门店单号
'idx = CInt(max.Substring(12,4)) + 1 '获得最大门店单号的后四位顺序号,并加1
idx = CInt(max.Substring((bh).Length,3)) + 1 '获得最大客户编码的后三位顺序号,并加1
Else
idx = 1 '否则顺序号等于1
End If
e.DataRow("门店单号") = bh & Format(idx,"0000")
End If
End If
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Post By：2014/9/1 20:42:00 [只看该作者]
