怎么实现下载而不是打开

ASP.NET文件下载函数使用浅析 【转】2009-08-06 20:31ASP.NET文件下载函数使用是什么情况呢？在你的Page_Load中添加这样的代码:Page.Response.Clear(); bool success = ResponseFile(Page.Request, Page.Response, "目的文件名称", "源文件路径", 1024000); if (!success) Response.Write("下载文件出错！"); Page.Response.End(); ASP.NET文件下载函数代码为: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; double pack = 10240; //10K bytes //int sleep = 200; //每秒5次 即5*10K bytes每秒 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[] {'=', '-'}); startBytes = Convert.ToInt64(range[1]); } _Response.AddHeader("Content-Length", (fileLength - startBytes).ToString()); if (startBytes != 0) { //Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength-1, fileLength)); } _Response.AddHeader("Connection", "Keep-Alive"); _Response.ContentType = "application/octet-stream"; _Response.AddHeader("Content-Disposition","attachment; filename=" + HttpUtility.UrlEncode(_fileName,System.Text.Encoding.UTF8) ); br.BaseStream.Seek(startBytes, SeekOrigin.Begin); int maxCount = (int) Math.Floor((fileLength - startBytes) / pack) + 1; for (int i = 0; i < maxCount; i++) { if (_Response.IsClientConnected) { _Response.BinaryWrite(br.ReadBytes(int.Parse(pack.ToString()))); Thread.Sleep(sleep); } else { i=maxCount; } } } catch { return false; } finally { br.Close(); myFile.Close(); } } catch { return false; } return true; } 其中："目的文件名称" 可以是："a.txt""源文件路径"可以是：@"C:\a.txt"sleep可以是500这样就实现了文件下载时,不管是什么格式的文件,都能够弹出打开/保存窗口.转自：http://dotnet.csdn.net/page/f1c3ea27-4dac-4742-a9a2-d4c6730b9dea 类别：csharp and asp.net |  | 添加到搜藏 | 分享到i贴吧 | 浏览(187) | 评论 (1)  最近读者：
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让客户设置  浏览器不打开
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string url_str = "~/projectName/MyTest.txt";
Response.Redirect(url_str);
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        /// <summary>
       /// 获取物理地址
       /// </summary>
       public static string MapPathFile(string FileName)
       {
           return HttpContext.Current.Server.MapPath(FileName);
       }

       /// <summary>
       /// 普通下载
       /// </summary>
       /// <param name="FileName">文件虚拟路径</param>
       public static void DownLoadold(string FileName)
       {
           string destFileName = MapPathFile(FileName);
           if (File.Exists(destFileName))
           {
               FileInfo fi = new FileInfo(destFileName);