Checking Client Download Success with ASP.NET MVC

Scenario: You want to know if a client completes a large download successfully.

Possible Solution: Create a custom ActionResult (perhaps derived from FileStreamResult) that streams the data and checks to see if the client remains connected.

public class CheckedFileStreamResult : FileStreamResult
{
   public CheckedFileStreamResult(FileStream stream, string contentType)
       :base(stream, contentType)
   {
       DownloadCompleted = false;
   }

   public bool DownloadCompleted { get; set; }

   protected override void WriteFile(HttpResponseBase response)
   {
       var outputStream = response.OutputStream;
       using (FileStream)
       {
           var buffer = new byte[_bufferSize];
           var count = FileStream.Read(buffer, 0, _bufferSize);
           while(count != 0 && response.IsClientConnected)
           {                
               outputStream.Write(buffer, 0, count);
               count = FileStream.Read(buffer, 0, _bufferSize);
           }
           DownloadCompleted = response.IsClientConnected;
       }
   }
   
   private const int _bufferSize = 0x1000;
}

Read more: OdeToCode.com

Posted via email from .NET Info