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Select e.DataCol.Name
Case = "制单日期","工程名称"
If e.DataRow.IsNull("制单日期") Then
e.DataRow("单据编号") = Nothing
Else
Dim d As Date = e.DataRow("制单日期")
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("工程名称") & "-CLRK-" & Format(d,"yyyyMM") & "-" '生成该月编号的前缀
If e.DataRow("单据编号").StartsWith(bh) = False '如果单据编号前缀不符
Dim max As String
Dim idx As Integer
max = e.DataTable.Compute("Max(单据编号)","制单日期 >= #" & fd & "# And 制单日期 <= #" & ld & "#") '取得该月的最大单据编号
If max > "" Then '如果存在最大单据编号
idx = CInt(max.Substring(17,4)) + 1 '获得最大单据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("单据编号") = bh & Format(idx,"0000")
End If
End If
End Select
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Post By：2012/3/15 9:19:00 [显示全部帖子]
