专家坐堂-表事件同时放两组代码就弹窗错误提示Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

\'下面代码是用于自动编号

Select e.DataCol.Name

Case "生产日期", "单据代码"

If e.DataRow.IsNull("生产日期") OrElse e.DataRow.IsNull("单据代码") Then

e.DataRow("单据编码") = Nothing

Else

Dim d As Date = e.DataRow("生产日期")

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("单据代码") & "-" & Format(d, "yyyyMM") & "" \'生成编号的前缀

If e.DataRow("单据编码").StartsWith(bh) = False Then\'如果单据编号前缀不符

Dim max As String

Dim idx As Integer

Dim flt As String

flt = "单据代码 = \'" & e.DataRow("单据代码") & "\' And 生产日期 >= #" & fd & "# And 生产日期 <= #" & ld & "# And [_Identify] <> " & e.DataRow("_Identify")

max = e.DataTable.Compute("Max(单据编码)", 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(max.length - 3)) + 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("单据编码") = bh & Format(idx, "0000")

End If

End Select

\'下面代码是用于自动填充

If e.DataCol.Name = "批号" Then

If e.NewValue Is Nothing Then

e.DataRow("品名") = Nothing

e.DataRow("型号") = Nothing

e.DataRow("规格") = Nothing

e.DataRow("单价") = Nothing

Else

Dim dr As DataRow

dr = DataTables("订单总表").Find("[批号]= \'" & e.NewValue & "\'")

If dr IsNot Nothing Then

e.DataRow("品名") = dr("品名")

e.DataRow("型号") = dr("型号")

e.DataRow("规格") = dr("规格")

e.DataRow("单价") = dr("单价")

End If