父表借款表单 DataColChanged代码

\'以下自动编制批号

If e.DataCol.Name = "dkrq" Then

    If e.DataRow.IsNull("dkrq") Then

        e.DataRow("cpbm") = Nothing

    Else

        Dim d As Date = e.DataRow("dkrq")

        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 = Format(d,"yyyyMM") \'生成编号的前6位,4位年,2位月.

        If e.DataRow("cpbm").StartsWith(bh) = False \'如果编号的前6位不符

            Dim max As String

            Dim idx As Integer

            max = e.DataTable.Compute("Max(cpbm)","dkrq >= #" & fd & "# And dkrq <= #" & ld & "# And [_Identify] <> " & e.DataRow("_Identify")) \'取得该月的最大编号

            If max > "" Then \'如果存在最大编号

                idx = CInt(max.Substring(7,3)) + 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("cpbm") = bh & "-" & Format(idx,"000")

        End If

    End If

End If

\'计算总借款金额计算

If e.DataCol.Name = "cpbm" Then

    Dim Filter As String = "[cpbm] = \'" & e.NewValue & "\'"

    e.DataRow("fdze") = DataTables("dk_jkb").Compute("Sum(je)", Filter)

End If