附件6MB,可能太大上传不了,这个问题是Y2没赋值“承前余额”,整个模型项目就这两个事件,方便可以测试一下。
'DataColChanging事件:
If e.DataRow.IsNULL("操作类型")=False
Dim Y2 As String
Dim Y0 As String ="银行流水单"
Dim Y1 As String ="收付编号"
If e.DataRow("操作类型")="账户收款"
Y2 ="收款明细表"
Else e.DataRow("操作类型")="账户付款"
Y2 ="付款明细表"
End If
Dim Y3 As String ="部门"
Dim Y4 As String ="操作类型"
End If
'DataColChanged事件:
If e.DataCol.Name="操作类型"
e.DataRow("制单日期")=Date.Now
Dim dr As DataRow
dr=DataTables("系统参数").Find("[表名] = '" & e.DataTable.Name & "'And [操作类型]='" & e.DataRow("操作类型") & "'And [部门]='" & e.DataRow("部门") & "'")
e.DataRow("工程代码")=dr("工程代码")
End If
Select e.DataCol.Name
Case "制单日期","工程代码"
If e.DataRow.IsNull("制单日期") OrElse e.DataRow.IsNull("工程代码") Then
e.DataRow("收付编号") = 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("工程代码") & "-" & Format(d,"yyyyMM") & "-" '生成编号的前缀
If e.DataRow("收付编号").StartsWith(bh) = False '如果单据编号前缀不符
Dim max As String
Dim idx As Integer
Dim flt As String
flt = "工程代码 = '"& e.DataRow("工程代码") & "' And 制单日期 >= #" & fd & "# And 制单日期 <= #" & ld & "# And [_Identify] <> " & e.DataRow("_Identify")
max = e.DataTable.SQLCompute("Max(收付编号)",flt) '取得该月的相同工程代码的最大单据编号
If max > "" Then '如果存在最大单据编号
idx = CInt(max.Substring(13,4)) + 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("收付编号") = bh & Format(idx,"0000")
End If
End If
End Select