请教怎么判断我指定路径的文件是否存在
我指定的路径是"C:\Program Files\Kingdee\K3ERP\DeleteRow.txt"
需要引用什么组件?
我指定的路径是"C:\Program Files\Kingdee\K3ERP\DeleteRow.txt"
需要引用什么组件?
解决方案 »
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msgbox "文件已存在",48,"提示"
else
....
end if
'不存在
else
'存在
endif
msgbox "文件已存在",48,"提示"
else
....
end if
msgbox "文件已存在",48,"提示"
else
msgbox "文件不存在",48,"提示"
end if
Private Declare Function PathFileExists Lib "shlwapi" Alias "PathFileExistsA" (ByVal pszPath As String) As Long
Private Declare Function PathIsDirectory Lib "shlwapi" Alias "PathIsDirectoryA" (ByVal pszPath As String) As Long
Private Declare Function PathIsDirectoryEmpty Lib "shlwapi" Alias "PathIsDirectoryEmptyA" (ByVal pszPath As String) As Long
Private Declare Function PathIsRelative Lib "shlwapi" Alias "PathIsRelativeA" (ByVal lpszPath As String) As Long
Private Declare Function PathIsRoot Lib "shlwapi" Alias "PathIsRootA" (ByVal pPath As String) As Long
Private Declare Function PathIsSystemFolder Lib "shlwapi" Alias "PathIsSystemFolderA" (ByVal pszPath As String, ByVal dwAttrb As Long) As Long
Private Declare Function PathIsNetworkPath Lib "shlwapi" Alias "PathIsNetworkPathA" (ByVal pszPath As String) As Long
'检测文件或目录. 根据 TestType 不同返回值不同.
' TestType 功能 返回值
'----------------------------------------------------------------------------------------------------
' IsExists 目录或文件是否存在 0-不存在; 1-文件存在; 2-目录存在
' IsRelative 是否为相对路径(不检测存在性) 0-不是相对路径; 1-是相对路径
' IsEmptyDir 是否为空目录 0-不存在; 1-存在但目录非空; 2-存在且为空目录
' IsSystemDir 是否为系统目录 0-不为系统目录或不存在; 1-存在且为系统目录
' IsRoot 是否为根目录 0-不为根目录; 1-为根目录但不存在; 2-为根目录且存在
' IsNetworkPath 是否为网络路径(目录或文件) 0-不是网络路径; 1-是网络路径但不存在; 2-是网络路径且存在Public Function TestPath(ByVal lpPathName As String, _
Optional ByVal TestType As enuFileTestType = IsExists) As Long
lpPathName = lpPathName & vbNullChar
Select Case TestType
Case IsExists
If PathFileExists(lpPathName) Then
If PathIsDirectory(lpPathName) Then TestPath = 2 Else TestPath = 1
End If
Case IsRelative
If PathIsRelative(lpPathName) Then TestPath = 1
Case IsEmptyDir
If PathIsDirectoryEmpty(lpPathName) Then
TestPath = 2
Else
If PathIsDirectory(lpPathName) Then TestPath = 1
End If
Case IsSystemDir
If PathIsSystemFolder(lpPathName, 0) Then TestPath = 1
Case IsRoot
If PathIsRoot(lpPathName) Then
If PathIsDirectory(lpPathName) Then TestPath = 2 Else TestPath = 1
End If
Case IsNetworkPath
If PathIsNetworkPath(lpPathName) Then
If PathFileExists(lpPathName) Then TestPath = 2 Else TestPath = 1
End If
End Select
End Function
Public Enum enuFileTestType
IsExists
IsRelative
IsEmptyDir
IsSystemDir
IsRoot
IsNetworkPath
End Enum
MsgBox "配置文件未找到!", vbInformation + vbOKOnly, "注意"
End If
MsgBox "配置文件未找到!", vbInformation + vbOKOnly, "注意"
End If
MsgBox "配置文件未找到!", vbInformation + vbOKOnly, "注意"
End If
Private Declare Function MakeSureDirectoryPathExists Lib "imagehlp.dll" (ByVal DirPath As String) As Long
'注意:要在工程的“引用”里面勾选“visual basic for applications”
和"visual basic objects and procedures"
'过程里面执行下述语句
Dim j_fileobjct0 As New FileSystemObject '定义一个文件对象
dim j_objpath as string
j_objpath=app.path
Dim j_bcfile As String
j_bcfile = j_objpath + "\cc-room\zks\jsz-hph.txt"
If j_fileobjct0.FileExists(j_bcfile) = False Then
'记录待装驳船信息的文件不存在,这是不可能的,除非A机关机或死机或正在开机
'MsgBox "本机与A机的通信出现问题,找不到驳船排驳信息,请联系计算机人员!!!"
Else
Open j_bcfile For Input As #1
...
endif
Private Declare Function MakeSureDirectoryPathExists Lib "imagehlp.dll" (ByVal DirPath As String) As Long
'注意:要在工程的“引用”里面勾选“visual basic for applications”
和"visual basic objects and procedures"
'过程里面执行下述语句
Dim j_fileobjct0 As New FileSystemObject '定义一个文件对象
dim j_objpath as string
j_objpath=app.path
Dim j_bcfile As String
j_bcfile = j_objpath + "\cc-room\zks\jsz-hph.txt"
If j_fileobjct0.FileExists(j_bcfile) = False Then
'记录待装驳船信息的文件不存在,这是不可能的,除非A机关机或死机或正在开机
'MsgBox "本机与A机的通信出现问题,找不到驳船排驳信息,请联系计算机人员!!!"
Else
Open j_bcfile For Input As #1
...
endif
直接用 Dir 函数可能会出错的,要改一盘:
Private Function iDir(ByVal PPath As String) As Boolean
On Error GoTo AACIf Dir(PPath) <> "" Then
iDir = True
Else
iDir = False
End IfExit Function
AAC:
iDir = False
End Function
Private Sub Form_Load()
If iDir("C:\Program Files\Kingdee\K3ERP\DeleteRow.txt") = True ThenMsgBox "exist"
ElseMsgBox "not exist"
End IfEnd Sub这样判断":\aa.txt"就不会出错了。