把这代码放进我上面发的测试里面
Select Case e.DataCol.Name
Case "生产批号", "生产数量", "工序名称"
Dim dr As DataRow
Dim mr As DataRow = e.DataRow
Dim drs As List(Of DataRow)
dr = e.DataTable.Find("[_SortKey] < " & mr("_SortKey") & " And [生产批号] = '" & mr("生产批号") & "' and [工序名称] = '" & mr("工序名称") & "'", "[_SortKey] Desc")
If dr Is Nothing Then
mr("累计数量") = mr("生产数量")
dr = mr
End If
drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [生产批号] = '" & dr("生产批号") & "' and [工序名称] = '" & mr("工序名称") & "'", "[_SortKey]")
For i As Integer = 1 To drs.Count - 1
drs(i)("累计数量") = drs(i - 1)("累计数量") + drs(i)("生产数量")
drs(i)("累计数量") = e.DataTable.Compute("sum(生产数量)", "[_SortKey] <= " & drs(i)("_SortKey") & " And [生产批号] = '" & dr("生产批号") & "' and [工序名称] = '" & mr("工序名称") & "'")
Next
If e.DataCol.Name = "生产批号" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
dr = e.DataTable.Find("[_SortKey] < " & mr("_SortKey") & " And [生产批号] = '" & e.OldValue & "' and [工序名称] = '" & mr("工序名称") & "'", "[_SortKey] Desc")
If dr Is Nothing Then
dr = e.DataTable.Find("[生产批号] = '" & e.OldValue & "' and [工序名称] = '" & mr("工序名称") & "'", "[_SortKey]")
If dr IsNot Nothing Then
dr("累计数量") = dr("生产数量")
End If
End If
If dr IsNot Nothing Then
drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [生产批号] = '" & dr("生产批号") & "' and [工序名称] = '" & mr("工序名称") & "'", "[_SortKey]")
For i As Integer = 1 To drs.Count - 1
drs(i)("累计数量") = drs(i - 1)("累计数量") + drs(i)("生产数量")
drs(i)("累计数量") = e.DataTable.Compute("sum(生产数量)", "[_SortKey] <= " & drs(i)("_SortKey") & " And [生产批号] = '" & dr("生产批号") & "' and [工序名称] = '" & mr("工序名称") & "'")
Next
End If
End If
If e.DataCol.Name = "工序名称" AndAlso e.OldValue IsNot Nothing AndAlso e.OldValue <> e.NewValue Then
dr = e.DataTable.Find("[_SortKey] < " & mr("_SortKey") & " And [工序名称] = '" & e.OldValue & "' and [生产批号] = '" & mr("生产批号") & "'", "[_SortKey] Desc")
If dr Is Nothing Then
dr = e.DataTable.Find("[工序名称] = '" & e.OldValue & "' and [生产批号] = '" & mr("生产批号") & "'", "[_SortKey]")
If dr IsNot Nothing Then
dr("累计数量") = dr("生产数量")
End If
End If
If dr IsNot Nothing Then
drs = e.DataTable.Select("[_SortKey] >= " & dr("_SortKey") & " And [工序名称] = '" & dr("工序名称") & "' and [生产批号] = '" & mr("生产批号") & "'", "[_SortKey]")
For i As Integer = 1 To drs.Count - 1
drs(i)("累计数量") = drs(i - 1)("累计数量") + drs(i)("生产数量")
drs(i)("累计数量") = e.DataTable.Compute("sum(生产数量)", "[_SortKey] <= " & drs(i)("_SortKey") & " And [工序名称] = '" & dr("工序名称") & "' and [生产批号] = '" & mr("生产批号") & "'")
Next
End If
End If
End Select
If e.DataCol.Name = "累计数量" OrElse e.DataCol.Name = "订单数量" OrElse e.DataCol.Name = "累计数量"Then
If (e.DataRow("累计数量")) > e.DataRow("订单数量") Then
messagebox.show("注意:你输入生产数量已经超出订单数值!!!!")
End If
End If