Question

我需要检查文件是否已经打开以加快我的代码速度。目前，它循环遍历列表，打开一个带有路径的文件，文件名来自列表，有几行代码，这意味着我想要打开的文件是否在此路径中的文件夹中，它仍然可以这样做：

If Not IsFileOpen("G:\BS\Josh Whitfield\1. Work work\Credit_Chasing\NEW PROCESS\" & file) Then
    If filevar <> "" Then
        Workbooks.Open "G:\BS\Josh Whitfield\1. Work work\Credit_Chasing\NEW PROCESS\" & file
    Else
        Workbooks.Open "G:\BS\Josh Whitfield\1. Work work\Credit_Chasing\NEW PROCESS\" & Range("F" & i).Value & "\" & file
    End If
End If

我还有一个函数可以检测文件是否已经打开，但我想要更好的一个或一些帮助让当前的文件与子文件夹一起使用：

Function IsFileOpen(filename As String)
    Dim filenum As Integer, errnum As Integer

    On Error Resume Next   ' Turn error checking off.
    filenum = FreeFile()   ' Get a free file number.
    ' Attempt to open the file and lock it.
    Open filename For Input Lock Read As #filenum
    Close filenum          ' Close the file.
    errnum = Err           ' Save the error number that occurred.
    On Error GoTo 0        ' Turn error checking back on.

    ' Check to see which error occurred.
    Select Case errnum

        ' No error occurred.
        ' File is NOT already open by another user.
        Case 0
         IsFileOpen = False

        ' Error number for "Permission Denied."
        ' File is already opened by another user.
        Case 70
            IsFileOpen = True

        ' Another error occurred.
        Case Else
            Error errnum
    End Select

End Function

感谢您的帮助！

Answer 1

管理以使用不同的功能解决它：

Function IsWorkBookOpen(FileName As String)
    Dim ff As Long, ErrNo As Long
    subCheck = False
    On Error Resume Next
    ff = FreeFile()
    Open FileName For Input Lock Read As #ff
    Close ff
    ErrNo = Err
    On Error GoTo 0

    IsWorkBookOpen = ""

    Select Case ErrNo
    Case 0:    IsWorkBookOpen = False
    Case 70:   IsWorkBookOpen = True
    Case Else: IsWorkBookOpen = ""
    End Select
End Function

和sub的设置：

ret = IsWorkBookOpen("G:\BS\Josh Whitfield\1. Work work\Credit_Chasing\NEW PROCESS\" & file)
        retSub = subCheck

    If ret <> True Then
        If ret = False Then
            Workbooks.Open "G:\BS\Josh Whitfield\1. Work work\Credit_Chasing\NEW PROCESS\" & file
        ElseIf ret = "" Then
            'subCheck = True
            Workbooks.Open "G:\BS\Josh Whitfield\1. Work work\Credit_Chasing\NEW PROCESS\" & Range("F" & i).Value & "\" & file
        End If
    End If

如果你想查看文件是否打开，这个代码对每个人都有用，它可以用于我的目的，因为我不介意打开3种类型的文件，这不是一个完全可靠的方法。

检查文件是否已打开，包括VBA中的子文件夹

1 个答案: