Question

我正在编程一种解析器，该解析器读取Excel表，然后创建一个 进程列表，带有一些属性，例如名称，开始时间，结束时间等。为此，我有一个 Process 类，并且在主文件中有一个 processList （Scripting.Dictionary），在我读行时将其放置在其中...对于此分配，键是一个名为 MSID 的字符串。

现在的问题是，由于某种原因，我只能从Dictionary中访问Object并在If-ElseIf语句的一部分内更改其参数。在另一种情况下，它会引发 424个对象必需的错误，而我不知道为什么。

这是代码

Sub ParseMessages()
' ITERATOR VARIABLES
Dim wb As Workbook, ws As Worksheet
Dim rowIter As Long, row As Variant
Dim A As Variant, B As Variant, C As Variant, D As Variant, E As Variant, F As Variant  ' A,B,C,D,E,F variables for the cells of each row

' PROCESS PARAMETERS
Dim MSID As Variant
Dim StartTime As Variant
Dim EndTime As Variant

' OBJECTS
Dim process As process
Dim processList As Scripting.Dictionary     ' DICTIONARY where the error happens
Set processList = New Scripting.Dictionary

Worksheets(1).Activate

'####### MAIN LOOP ######################################################
For rowIter = 1 To 11
    row = Rows(rowIter)
    A = row(1, 1)
    B = row(1, 2)
    C = row(1, 3)
    D = row(1, 4)
    E = row(1, 5)
    F = row(1, 6)
    Dim startIndex As Long, endIndex As Long, count As Long

    ' ------ PROCESSSTART -> MSID, processName, startTime
    If (.....) Then
        Debug.Print (vbNewLine & "Process start")
        If (...) Then   ' --MSID
            startIndex = InStr(F, "Nr") + 3             '3 to skip "Nr "
            endIndex = InStr(startIndex, F, "(")
            count = endIndex - startIndex
            MSID = Mid(F, startIndex, count)
            StartTime = B
            Debug.Print (StartTime & " -> " & MSID)

            ' **** MAKE new Process object, add to collection
            Set process = New process
            process.StartTime = StartTime
            process.MSID = MSID
            processList.Add MSID, process    ' Add to the dictionary, KEY, VALUE

        ElseIf (...) Then      ' --ProcessName
            startIndex = InStr(F, "=") + 2
            endIndex = InStr(F, "<") - 1
            count = endIndex - startIndex
            processName = Mid(F, startIndex, count)
            Debug.Print (processName)
            ' **** Add Name to the last element of the dictionary
            processList(processList.Keys(processList.count - 1)).Name = processName 'get last Process Object
            processList(MSID).Name = "Just Testing" ' !!!! here it works
        Else
        End If

    ' ------ END OF PROCESS ->
    ElseIf (......) Then
        startIndex = InStr(D, "MSID") + 5
        endIndex = InStr(startIndex, D, "]")
        count = endIndex - startIndex
        MSID = Mid(D, startIndex, count)

        EndTime = B
        Debug.Print (EndTime & " End of process " & MSID)

        ' **** Add End time for the process from the collection, specified by MSID
        Debug.Print ("Test of " & processList(MSID).Name)  ' !!!!! Doesn't work
        processList(MSID).Name = "Just Prooooooving"       ' !!!!! Here doesn't work
        processList(MSID).EndTime = EndTime                ' !!!!! Does not work
    End If
Next
End Sub

因此要指定一个问题-为什么这样做有效：

processList(MSID).Name = "Just Testing" ' !!!! here it works

这不是：

processList(MSID).Name = "Just Prooooooving"       ' !!!!! Here doesn't work

如果我首先证明字典中是否存在带有MSID键的对象，找不到。

If processList.Exists(MSID) Then
            Debug.Print ("Process exists, altering it...")
            processList(MSID).Name = "Just Prooooooving"   ' !!!!! Here doesn't work
            processList(MSID).EndTime = EndTime
End If

但是在评估条件的第一行，通过调试我得到了一些不同的东西。在那！见下图

Debugging - MSID there but not able to access Dictionary entry with this as a key

您能建议如何解决此问题吗？

非常感谢您的帮助！

Answer 1

所以...这有点可耻，但经过数小时的尝试解决此问题后，我发现，我将对象添加到以MSID =“ 124”作为键的列表中。

当我尝试访问时，我当然使用了值为“ 124”的MSID。注意区别吗？是的，最后一个空格。

棘手的部分是-VBA调试器会在字符串的末尾修剪空格，因此实际上看不到它。同样的情况是，如果您将其打印出来-看不到...

所以最后，我花了很多时间来寻找答案，这很简单：/ 我所能做的就是嘲笑这个。

VBA-对象必需错误，从字典更改对象

1 个答案: