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ʵÏÖ´úÂëÈçÏ£º  public void ListFiles(FileSystemInfo info)
{
if (!info.Exists) return;
DirectoryInfo dir = info as DirectoryInfo;
//²»ÊÇĿ¼
if (dir == null) return;
FileSystemInfo[] files = dir.GetFileSystemInfos();
for (int i = 0; i < files.Length; i++)
{
FileInfo file = files[i] as FileInfo;
//ÊÇÎļþ
if (file != null)

{
//Console.WriteLine(file.FullName + "\t " + file.Length);
if (file.FullName.Substring(file.FullName.LastIndexOf(".")) == ".jpg")¡¡
//´Ë´¦ÎªÏÔʾJPG¸ñʽ£¬²»¼ÓIF¿É±éÀúËùÓиñʽµÄÎļþ
{
this.list1.Items.Add(file);
//MessageBox.Show(file.FullName.Substring(file.FullName.LastIndexOf(".")));
}
}
//¶ÔÓÚ×ÓĿ¼£¬½øÐеݹéµ÷ÓÃ
else
{
ListFiles(files[i]);
}
}
}

    µ÷Óãº

    string dir£»
    ListFiles£¨new DirectoryInfo£¨dir£©£©£»