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对于下载时新打开一窗口下载,下载完后需要关闭的 一种:对于较小文件可以有效: System.IO.FileInfo file = new System.IO.FileInfo("F:\\mp3\\mp3\\别哭我最爱的人.mp3"); Response.Clear(); Response.ClearHeaders(); Response.Buffer = false; Response.Charset="GB2312"; Response.ContentEncoding=System.Text.Encoding.UTF8; Response.ContentType = "application/octet-stream"; Response.AddHeader("Content-Disposition", "attachment; filename="+Server.UrlEncode("别哭我最爱的人.mp3")); Response.AddHeader("Content-Length", file.Length.ToString());
Response.WriteFile(file.FullName); Response.Flush(); Response.End(); 该代码可以实现输出文件并将新打开的窗体关闭。
另一种对于大文件,我们用上述代码不是较好,因为上述代码是将文件全缓存于服务器后才输出的,如果你的服务器流量大,且文件较大,不建议用以上方法。
以下我测试过,较好能解决: public static bool ResponseFile(HttpRequest _Request,HttpResponse _Response,string _fileName,string _fullPath, long _speed) { try { FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); BinaryReader br = new BinaryReader(myFile); try { _Response.AddHeader("Accept-Ranges", "bytes"); _Response.Buffer = false; long fileLength = myFile.Length; long startBytes = 0; int pack = 10240; //10K bytes int sleep = (int)Math.Floor(1000 * pack / _speed) + 1; if (_Request.Headers["Range"] != null) { _Response.StatusCode = 206; string[] range = _Request.Headers["Range"].Split(new char[] {'=', '-'});
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