vb统计某目录下文件及子文件夹下某个扩展名文件数量
需要设计一个函数 形如abc（"c:\abc\","*.txt"）功能，统计出c盘abc下，及其abc下所有子文件夹以及子文件的子文件....所有扩展名为*.txt的文件数量 --------------------编程问答-------------------- Dim strFile As String, n As Long
strFile = Dir("c:\abc\*.txt")
Do Until strFile = ""
n = n + 1
strFile = Dir()
Loop --------------------编程问答--------------------
--------------------编程问答--------------------
Option Explicit
Private Const MAX_PATH = 260
Private Const UnicodeTypeLib = True
Private Type FILETIME
dwLowDateTime As Long
dwHighDateTime As Long
End Type
Private Type WIN32_FIND_DATA
dwFileAttributes As Long
ftCreationTime As FILETIME
ftLastAccessTime As FILETIME
ftLastWriteTime As FILETIME
nFileSizeHigh As Long
nFileSizeLow As Long
dwReserved0 As Long
dwReserved1 As Long
cFileName As String * MAX_PATH
cAlternate As String * 14
End Type
Private Declare Function GetDriveType Lib "kernel32" Alias "GetDriveTypeA" (ByVal sDrive As String) As Long
Private Declare Function FindFirstFile Lib "kernel32" Alias "FindFirstFileA" (ByVal lpFileName As String, lpFindFileData As WIN32_FIND_DATA) As Long
Private Declare Function FindNextFile Lib "kernel32" Alias "FindNextFileA" (ByVal hFindFile As Long, lpFindFileData As WIN32_FIND_DATA) As Long
Private Declare Function FindClose Lib "kernel32" (ByVal hFindFile As Long) As Long
Private Declare Function lstrlen Lib "kernel32" Alias "lstrlenA" (ByVal lpString As String) As Long
Private Function FindFiles(sTarget As String, Optional ByVal Start As String) As Collection
Dim ab() As Byte
Static TypeDrev As String
Dim hFiles As Long, f As Boolean
Static sName As String, sSpec As String, nFound As New Collection
Static fd As WIN32_FIND_DATA, iLevel As Long
Dim sEmpty, INVALID_HANDLE_VALUE
If Start = sEmpty Then Start = CurDir$
If iLevel = 0 Then
Set nFound = Nothing
Start = NormalizePath(Start)
End If
iLevel = iLevel + 1
hFiles = FindFirstFile(Start & "*.*", fd)
f = (hFiles <> INVALID_HANDLE_VALUE)
Do While f
ab = fd.cFileName
sName = ByteZToStr(ab)
If Left$(sName, 1) <> "." Then
sSpec = Start & sName
If fd.dwFileAttributes And vbDirectory Then
DoEvents
FindFiles sTarget, sSpec & "\"
Else
If InStr(sTarget, "*") > 0 Then
If StrComp(Right$(sName, 3), Right$(sTarget, 3), 1) = 0 Then
nFound.Add sSpec
ElseIf StrComp(sName, sTarget, 1) = 0 Then
nFound.Add sSpec
End If
End If
End If
End If
f = FindNextFile(hFiles, fd)
Loop
f = FindClose(hFiles)
Set FindFiles = nFound
iLevel = iLevel - 1
End Function
Private Function ByteZToStr(ab() As Byte) As String
If UnicodeTypeLib Then
ByteZToStr = ab
Else
ByteZToStr = StrConv(ab, vbUnicode)
End If
ByteZToStr = Left$(ByteZToStr, lstrlen(ByteZToStr))
End Function
Private Function NormalizePath(sPath As String) As String
If Right$(sPath, 1) <> "\" Then
NormalizePath = sPath & "\"
Else
NormalizePath = sPath
End If
End Function
Private Sub Command1_Click()
Dim Num As Long
Num = FindFiles("*.txt", "c:\abc").Count
MsgBox Num
End Sub
始终返回0 --------------------编程问答-------------------- 自己解决了
原来微软提供了
http://support.microsoft.com/kb/185476 --------------------编程问答--------------------
标记大侠这个帖子。有时间用起来。 --------------------编程问答--------------------
不可能，看你C盘下是否有ABC文件夹，文件内是否有.txt文件，这个程序可以遍历abc文件夹下的所有文件夹里的文件。
复制帖，你总会吧，这个程序是我测试过的，没有问题。 --------------------编程问答-------------------- 复制粘贴你总会吧，在C盘根目录下建立好ABC文件，在里复制好几个txt文件，然后复制粘贴我2楼的帖子到你的form,然后测试。
--------------------编程问答-------------------- 简单的
Public Function sta_FileCount(sDirectory As String, sExt As String) As Long
Dim FileNum As Integer, FileName As String, tmpStr As String
Dim mCount As Long
If Dir(sDirectory, vbDirectory) = "" Then Exit Function
FileName = sDirectory & "\tmp.dat"
DoEvents
Shell "cmd /c tree /f " & sDirectory & " >" & FileName
FileNum = FreeFile
Open FileName For Input As #FileNum
While Not EOF(FileNum)
Line Input #FileNum, tmpStr
If tmpStr Like sExt Then mCount = mCount + 1
Wend
sta_FileCount = mCount
Close
End Function
要注意的是,当目录下文件很多时,需要异步执行shell --------------------编程问答-------------------- 学习了，顶,,,,,,
补充：VB , 基础类
