如何确保文件名文件夹名字有效
windows的 文件夹或者文件名必须不包含一些字符,并且长度有一定的限制,下面的两个方法可以确保文件或者文件夹的名字有效。
static string MakeFilenameValid(string filename) { if (filename == null) throw new ArgumentNullException(); if (filename.EndsWith(".")) filename = Regex.Replace(filename, @"\.+$", ""); if (filename.Length == 0) throw new ArgumentException(); if (filename.Length > 245) throw new PathTooLongException(); foreach (char c in System.IO.Path.GetInvalidFileNameChars()) { filename = filename.Replace(c, '_'); } return filename; } static string MakeFoldernameValid(string foldername) { if (foldername == null) throw new ArgumentNullException(); if (foldername.EndsWith(".")) foldername = Regex.Replace(foldername, @"\.+$", ""); if (foldername.Length == 0) throw new ArgumentException(); if (foldername.Length > 245) throw new PathTooLongException(); foreach (char c in System.IO.Path.GetInvalidPathChars()) { foldername = foldername.Replace(c, '_'); } return foldername; } http://blog.miniasp.com/post/2009/10/How-to-ensure-filename-and-foldername--is-valid.aspx