All download methods are summarized in ASP.

1         /// <summary>2         ///Download File TransmitFile3         /// </summary>4         /// <param name= "FilePath" ></param>5          Public Static voidDownloadFile (stringFilePath)6         {7             stringfilename =HttpContext.Current.Server.MapPath (filePath);8             varResponse =HttpContext.Current.Response;9Response. ContentType ="application/x-zip-compressed";TenResponse. AddHeader ("content-disposition","attachment;filename="+path.getfilename (filename)); One Response. TransmitFile (filename);  A         } -  -         /// <summary> the         ///Download Large Files -         /// </summary> -         /// <param name= "FilePath" ></param> -          Public Static voidDownloadbigfile (stringFilePath) +         { -FilePath = HttpContext.Current.Server.MapPath (FilePath);//Path +             stringFileName = Path.getfilename (FilePath);//file name saved by the client A             varResponse =HttpContext.Current.Response; atSystem.IO.FileInfo FileInfo =NewSystem.IO.FileInfo (filePath); -             if(Fileinfo.exists = =true) -             { -                 Const LongChunkSize =102400;//100K Read the file every time, only read 100K, this can alleviate the pressure of the server -  -                 byte[] buffer =New byte[ChunkSize]; in  - Response. Clear (); toSystem.IO.FileStream IStream =System.IO.File.OpenRead (filePath); +                 LongDatalengthtoread = Istream.length;//get the total size of the downloaded file -Response. ContentType ="Application/octet-stream"; theResponse. AddHeader ("content-disposition","attachment; Filename="+Httputility.urlencode (FileName)); *                  while(Datalengthtoread >0&&Response. isclientconnected) $                 {Panax Notoginseng                     //Read size Response.OutputStream.Write (buffer, 0, lengthread); -                     intLengthread = istream.read (buffer,0, Convert.ToInt32 (ChunkSize)); the Response. Flush (); +Datalengthtoread = Datalengthtoread-Lengthread; A                 } the  + Response. Close (); -             } $         } $  -         /// <summary> -         ///Stream mode Download the         /// </summary> -         /// <param name= "FilePath" ></param>Wuyi          Public Static voidDownloadfilestream (stringFilePath) the         { -FilePath = HttpContext.Current.Server.MapPath (FilePath);//Path Wu             stringFileName = Path.getfilename (FilePath);//file name saved by the client -             varResponse =HttpContext.Current.Response; AboutFileStream fs =NewFileStream (FilePath, FileMode.Open); $  -             byte[] bytes =New byte[(int) fs. Length]; Fs. Read (Bytes,0, Bytes. Length); -  - FS. Close (); AResponse. ContentType ="Application/octet-stream"; +             //notifies the browser to download a file instead of opening it theResponse. AddHeader ("content-disposition","attachment; Filename="+Httputility.urlencode (FileName, System.Text.Encoding.UTF8)); - Response. BinaryWrite (bytes); $ Response. Flush (); the Response. End (); the         } the  the         /// <summary> -         ///Download the text as a file in         /// </summary> the         /// <param name= "text" ></param> the         /// <param name= "FileName" ></param> About          Public Static voidDownloadtext (stringText,stringfileName) the         { the             byte[] bytes =Encoding.Default.GetBytes (text); the             varResponse =HttpContext.Current.Response; +Response. ContentType ="Application/octet-stream"; -             //notifies the browser to download a file instead of opening it theResponse. AddHeader ("content-disposition","attachment; Filename="+Httputility.urlencode (FileName, System.Text.Encoding.UTF8));Bayi Response. BinaryWrite (bytes); the Response. Flush (); the Response. End (); -}