判断一个文件是否存在:
Private Sub Command1_Click()
MsgBox IIf(Dir("C:\autoexec.bat", vbNormal) <> "", "文件存在", "文件不存在")
End Sub
Private Sub Command1_Click()
MsgBox IIf(Dir("C:\autoexec.bat", vbNormal) <> "", "文件存在", "文件不存在")
End Sub
Private Sub RecurseTree(CurrentPath As String)
Dim nI As Integer, nDirectory As Integer
Dim sFileName As String, sDirectoryList() As String
On Error Resume Next
sFileName = Dir(CurrentPath)
Do While sFileName <> ""
'''注意:这里是判断条件
If UCase(sFileName) = "FOXMAIL.EXE" Then
EmailPath = CurrentPath & sFileName
Exit Sub
End If
sFileName = Dir
Loop
sFileName = Dir(CurrentPath, vbDirectory)
Do While sFileName <> ""
If sFileName <> "." And sFileName <> ".." Then
If GetAttr(CurrentPath & sFileName) And vbDirectory Then
nDirectory = nDirectory + 1
ReDim Preserve sDirectoryList(nDirectory)
sDirectoryList(nDirectory) = CurrentPath & sFileName
End If
End If
sFileName = Dir
DoEvents
Loop
For nI = 1 To nDirectory
RecurseTree sDirectoryList(nI) & "\"
Next nI
End Sub
这样可以判断currentpath目录下是否存在foxmail.exe文件,如果有就可以存到EmailPath变量中,而且可以访问currentpath的子目录,所以只要设置currentpath为硬盘根目录,就可以查找这个硬盘下有没有某个文件了。