主题：[求助]为什么操作日志生成的原行数据是修改后的？

项目事件

 

MainTableChanged

 

For Each dt As DataTable In DataTables

    dt.GlobalHandler.DataColChanged = True

Next

全局表事件

 

DataColChanged

 

If e.DataTable.Name <> "数据操作日志" Then

    If e.DataRow.RowState = 2 Then

MessageBox.Show(e.DataRow.RowState)

        Return

    Else

MessageBox.Show(e.DataRow.RowState)

        Dim dr As DataRow = DataTables("数据操作日志").AddNew

        dr("ID") = e.DataRow("_Identify")

        dr("用户") = User.Name

        dr("涉及表") = e.DataTable.Name

        dr("涉及列") = e.DataCol.Name

        dr("涉及行") = e.DataRow("_Identify")

        dr("时间") = Date.Now

        dr("操作") = """" & e.OldValue &  """ 改成了 """ & e.NewValue & """"

        Dim str As String = ""

        For Each c As DataCol In e.DataTable.DataCols

            str += c.Name & "=" & e.DataRow(c.Name) & "|"

        Next

        dr("原行数据") = str

    End If

End If

为什么生成的“原行数据”是修改后的，而不是修改以前的数据？

str += c.Name & "=" & e.DataRow(c.Name).OriginalValue & "|"

这种操作日志建议写到BeforeSaveDataRow事件，效率高点

Dim str As String = ""

For Each c As DataCol In e.DataTable.DataCols
    If c.name = e.DataCol.name Then
        str += c.Name & "=" & e.oldvalue & "|"
    Else
        str += c.Name & "=" & e.DataRow(c.Name) & "|"
    End If
   
Next

dr("原行数据") = str