主题：[求助]为什么下列代码不能实现在datacolchanged事件中实现多个表数据运算后在一个表中数据累加

“卷2答”代码
Dim kmdr As DataRow = DataTables("客观问题描述").find("试卷号= '" & DataTables("卷2答").Name.chars(1) & "'")
Dim zmdr As DataRow = DataTables("主观问题描述").find("试卷号= '" & DataTables("卷2答").Name.chars(1) & "'")
Dim kfdr As DataRow = DataTables("客观题答案").find("试卷号 = '" & DataTables("卷2答").Name.chars(1) & "'" )
Dim xswpdr As DataRow = DataTables("学生问题频度").find("学号 = '" & e.DataRow("学号") & "'")
If xswpdr("知1") IsNot Nothing And xswpdr("知2") IsNot Nothing  And xswpdr("知3") IsNot Nothing  And xswpdr("知4") IsNot Nothing Then
    xswpdr("知1") = xswpdr("知1")
    xswpdr("知2") = xswpdr("知2")
    xswpdr("知3") = xswpdr("知3")
    xswpdr("知4") = xswpdr("知4")
End If                                                             这部分代码是要实现继承“卷1答”计算结果，但是加入后就成了图4的结果
For Each dr As DataRow In DataTables("卷2答").DataRows
    Dim t1 As String = e.DataRow("客观题1")
    Dim d1 As String = kfdr("客观题1")
    Dim t2 As String = e.DataRow("客观题2")
    Dim d2 As String = kfdr("客观题2")
    Dim t3 As String = e.DataRow("客观题3")
    Dim d3 As String = kfdr("客观题3")
    If t1 IsNot Nothing AndAlso t2 IsNot Nothing AndAlso t3 IsNot Nothing Then
        Dim ts() As String = {t1, t2, t3}
        Dim ds() As String = {d1, d2, d3}
        For i As Integer = 0 To ts.length-1
            For Each s As String In ts(i)
                If ds(i).Contains(s) = False Then
                    Select Case kmdr("题" & i + 1 & s.ToUpper() & "范")
                        Case "知1"
                            xswpdr("知1") = xswpdr("知1") + 1
                        Case "知2"
                            xswpdr("知2") = xswpdr("知2") +  1
                        Case "知3"
                            xswpdr("知3") = xswpdr("知3") +  1
                        Case "知4"
                            xswpdr("知4") = xswpdr("知4") +  1
                    End Select
                End If
            Next
        Next
        For i As Integer = 0 To ts.length-1
            For Each s As String In ds(i)
                If ts(i).Contains(s) = False Then
                    Select Case kmdr("题" & i + 1 & s.ToUpper() & "范")
                        Case "知1"
                            xswpdr("知1") = xswpdr("知1") + 1
                        Case "知2"
                            xswpdr("知2") = xswpdr("知2") +  1
                        Case "知3"
                            xswpdr("知3") = xswpdr("知3") +  1
                        Case "知4"
                            xswpdr("知4") = xswpdr("知4") +  1
                    End Select
                End If
            Next
        Next
    End If
    For i As Integer = 1 To 7
        If e.DataRow("主观题" & i ) = "f" Then
            Select Case zmdr("题" & i & "范")
                Case "知1"
                    xswpdr("知1") = xswpdr("知1") + 1
                Case "知2"
                    xswpdr("知2") = xswpdr("知2") +  1
                Case "知3"
                    xswpdr("知3") = xswpdr("知3") +  1
                Case "知4"
                    xswpdr("知4") = xswpdr("知4") +  1
            End Select
        End If
    Next
Next

图片

此主题相关图片如下：频度累积.jpg