Excel VBA On Error Resume接下来，选项正确，但仍不恢复 [英] Excel VBA On Error Resume Next, Options are correct but still not resuming

问题描述

   我已经检查了VBE中的工具">选项">常规">错误捕获"-我将其设置为在类模块中中断"和在未处理的错误中中断"，并且无论哪种方式引发错误.错误被抛出:

    I have already checked Tools > Options > General > Error Trapping in VBE - I have set it to both "Break in Class Module" and "Break on Unhandled Errors" and either way it still throws the error. The error is thrown on the line:

Set xlContacts = Workbooks(LocalContactsFilename)

   引发错误，指出下标超出范围，并且我知道这意味着在Workbooks集合中找不到索引，该语句在这里是因为通常文件已经打开作为插件，因此我可以通过此语句获得对它的引用.应该恢复该错误，因为如果未打开文件，则将其打开.

我注意到这件事很奇怪-即使这行代码没有访问任何远程文件或网络，也只有在我与网络断开连接时才会抛出此错误.如果在连接到网络的同时打开工作簿，则不会引发此错误.

   有人曾经历过吗?如果您的选项设置为仅在未处理的异常上暂停，但无论如何都会暂停?

    It throws an error saying the subscript is out of range, and I understand that this means the index was not found within the Workbooks collection, this statement is here because usually the file is already open as an addin so I can just get a reference to it through this statement. It is supposed to resume on this error because if the file is not open I open it.

    One odd thing I noticed about this- even though this line of code is not accessing any remote files or the network, it only throws this error when I am disconnected from the network. If I open the workbook while connected to the network this error is not thrown.

    Has anyone experienced this before? When your options are set to only halt on unhandled exceptions but it halts anyways?

Public Sub openContactsFile()
    On Error Resume Next
    Dim fso As New FileSystemObject
    Dim LocalContactsPath As String
    Dim LocalContactsFilename As String
    Dim LocalContactsShortFilename As String

    LocalContactsPath = wbMyCompanyWorkbook.Names("localContactsPath").RefersToRange.Value
    LocalContactsFilename = Mid(LocalContactsPath, (InStrRev(LocalContactsPath, "\") + 1))
    LocalContactsShortFilename = Mid(LocalContactsFilename, 1, (InStrRev(LocalContactsFilename, ".") - 1))

    'On Error Resume Next
    Application.ScreenUpdating = False

    If Not fso.FileExists(LocalContactsPath) Then
        If MsgBox("The contacts file is not available.  Click Yes to update the contacts now, or No to use the workbook without contact auto-fill capability.", vbYesNo, ThisWorkbook.NAME) = vbYes Then
            SyncContacts
        Else
            GoTo cancelParse
        End If
    End If
    If fso.FileExists(LocalContactsPath) Then
        On Error GoTo catch_no_remote_connection
        If fso.GetFile(LocalContactsPath).DateLastModified < fso.GetFile(wbMyCompanyWorkbook.Names("remoteContactsPath").RefersToRange.Value).DateLastModified Then
            If MsgBox("Your local contacts file appears to be out of date, would you like to download the latest contacts file?", vbYesNo Or vbQuestion, ThisWorkbook.NAME) = vbYes Then
                SyncContacts
            End If
        End If
catch_no_remote_connection:
        If Err.Number = 53 Then Err.CLEAR
        On Error Resume Next
        Set xlContacts = Workbooks(LocalContactsFilename)

        If xlContacts Is Nothing Then
            Set xlContacts = Workbooks.Open(LocalContactsPath, False, True)
        End If
        xlContacts.Sheets(1).Range("A1:CN2000").Sort Key1:=xlContacts.Sheets(1).Range("F2"), Order1:=xlAscending, Key2:=xlContacts.Sheets(1).Range("B2"), Order2:=xlAscending, Header:=xlYes, OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom, DataOption1:=xlSortNormal, DataOption2:=xlSortNormal
    End If

    'hide the contacts from view or editing
    On Error Resume Next
    If Not Workbooks(LocalContactsFilename) Is Nothing Then xlContacts.IsAddin = True
    Err.CLEAR
    On Error GoTo 0
cancelParse:
    Application.ScreenUpdating = True
    Exit Sub
End Sub

在此先感谢您的帮助！

推荐答案

@TimWilliams
                     下面的代码无论是否连接到网络都可以正常运行(我现在意识到这是问题的根源)，问题是当它抛出文件未找到错误并转到catch_no_remote_connection时，没有恢复清除错误的方法，所以我添加了此代码以关闭错误处理块并重置处理程序:

@TimWilliams
    Thank you for the answer- I assumed Err.CLEAR resets the error handling but it does not. The code below functions correctly whether connected to the network or not (which I realize now was the origin of the problem), the problem was when it threw the file not found error and went to catch_no_remote_connection, there was no resume to clear the error, so I added this to close out the error handling block and reset the handler:

    Resume post_err
post_err:

 功能代码:

 Functional Code:

Public Sub openContactsFile()
    On Error Resume Next
    Dim fso As New FileSystemObject
    Dim LocalContactsPath As String
    Dim LocalContactsFilename As String
    Dim LocalContactsShortFilename As String

    LocalContactsPath = wbMyCompanyWorkbook.Names("localContactsPath").RefersToRange.Value
    LocalContactsFilename = Mid(LocalContactsPath, (InStrRev(LocalContactsPath, "\") + 1))
    LocalContactsShortFilename = Mid(LocalContactsFilename, 1, (InStrRev(LocalContactsFilename, ".") - 1))

    Application.ScreenUpdating = False

    If Not fso.FileExists(LocalContactsPath) Then
        If MsgBox("The contacts file is not available.  Click Yes to update the contacts now, or No to use the workbook without contact auto-fill capability.", vbYesNo, ThisWorkbook.NAME) = vbYes Then
            SyncContacts
        Else
            GoTo cancelParse
        End If
    End If
    If fso.FileExists(LocalContactsPath) Then
        On Error GoTo catch_no_remote_connection
        If fso.GetFile(LocalContactsPath).DateLastModified < fso.GetFile(wbMyCompanyWorkbook.Names("remoteContactsPath").RefersToRange.Value).DateLastModified Then
            If MsgBox("Your local contacts file appears to be out of date, would you like to download the latest contacts file?", vbYesNo Or vbQuestion, ThisWorkbook.NAME) = vbYes Then
                SyncContacts
            End If
        End If
catch_no_remote_connection:
        'there is no network connection, clear the error and resume from here
        Err.CLEAR
        Resume post_err
post_err:
        On Error Resume Next
        'get reference to the workbook if it is already open
        Set xlContacts = Workbooks(LocalContactsFilename)

        If xlContacts Is Nothing Then
            'the workbook was not open, open it
            Set xlContacts = Workbooks.Open(LocalContactsPath, False, True)
        End If
        'sort contacts by company, name
        xlContacts.Sheets(1).Range("A1:CN2000").Sort Key1:=xlContacts.Sheets(1).Range("F2"), Order1:=xlAscending, Key2:=xlContacts.Sheets(1).Range("B2"), Order2:=xlAscending, Header:=xlYes, OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom, DataOption1:=xlSortNormal, DataOption2:=xlSortNormal
    End If

    'hide the contacts from view or editing by setting the workbook as an Addin
    On Error Resume Next
    If Not Workbooks(LocalContactsFilename) Is Nothing Then xlContacts.IsAddin = True
    Err.CLEAR
    On Error GoTo 0
cancelParse:
    Application.ScreenUpdating = True
    Exit Sub
End Sub

谢谢大家抽出宝贵的时间来研究这个问题！

Thank you all for taking the time to look at this!

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