Serve file, log when download is finished












0














I'm trying to save a log of when a large file is downloaded from my server.
The file is served with this method:



public IActionResult Download(string filename)
{
FileStream stream = new FileStream(this.Path + filename,
FileMode.Open,
FileAccess.Read,
FileShare.ReadWrite,
65536,
FileOptions.Asynchronous | FileOptions.SequentialScan
);

return File(stream, "application/octet-stream", filename);
}


When the file is finished I want to store a database record of that.



So far my ideas have been to find an event that listens to when a stream disposes or closes, but that doesn't seem to exist. Another idea I had was to compare position of the stream to the length of it, but then I have no idea how to check that.










share|improve this question





























    0














    I'm trying to save a log of when a large file is downloaded from my server.
    The file is served with this method:



    public IActionResult Download(string filename)
    {
    FileStream stream = new FileStream(this.Path + filename,
    FileMode.Open,
    FileAccess.Read,
    FileShare.ReadWrite,
    65536,
    FileOptions.Asynchronous | FileOptions.SequentialScan
    );

    return File(stream, "application/octet-stream", filename);
    }


    When the file is finished I want to store a database record of that.



    So far my ideas have been to find an event that listens to when a stream disposes or closes, but that doesn't seem to exist. Another idea I had was to compare position of the stream to the length of it, but then I have no idea how to check that.










    share|improve this question



























      0












      0








      0







      I'm trying to save a log of when a large file is downloaded from my server.
      The file is served with this method:



      public IActionResult Download(string filename)
      {
      FileStream stream = new FileStream(this.Path + filename,
      FileMode.Open,
      FileAccess.Read,
      FileShare.ReadWrite,
      65536,
      FileOptions.Asynchronous | FileOptions.SequentialScan
      );

      return File(stream, "application/octet-stream", filename);
      }


      When the file is finished I want to store a database record of that.



      So far my ideas have been to find an event that listens to when a stream disposes or closes, but that doesn't seem to exist. Another idea I had was to compare position of the stream to the length of it, but then I have no idea how to check that.










      share|improve this question















      I'm trying to save a log of when a large file is downloaded from my server.
      The file is served with this method:



      public IActionResult Download(string filename)
      {
      FileStream stream = new FileStream(this.Path + filename,
      FileMode.Open,
      FileAccess.Read,
      FileShare.ReadWrite,
      65536,
      FileOptions.Asynchronous | FileOptions.SequentialScan
      );

      return File(stream, "application/octet-stream", filename);
      }


      When the file is finished I want to store a database record of that.



      So far my ideas have been to find an event that listens to when a stream disposes or closes, but that doesn't seem to exist. Another idea I had was to compare position of the stream to the length of it, but then I have no idea how to check that.







      c# asp.net-core asp.net-core-mvc






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 20 '18 at 0:57









      Tetsuya Yamamoto

      14.8k42040




      14.8k42040










      asked Nov 19 '18 at 19:45









      Johan SvenssonJohan Svensson

      4773723




      4773723
























          2 Answers
          2






          active

          oldest

          votes


















          1














          What if you created a custom stream class that allowed you to log that event? Something like this:



          public class MyAwesomeStream : FileStream
          {
          //...
          public override Dispose(bool disposing)
          {
          //do your event logging / handling here

          base.Dispose(disposing);
          )
          }


          Then just swap that in wherever you were using FileStream.






          share|improve this answer





























            1














            For executing a method after download complete, you could try ActionFilter, its OnActionExecuted will be called after Download method complete.





            • FileDownloadCompleteActionFilter.cs



              public class FileDownloadCompleteActionFilter : ActionFilterAttribute
              {
              private readonly MVCProContext _context;
              public FileDownloadCompleteActionFilter(MVCProContext context)
              {
              _context = context;
              }
              public override void OnActionExecuted(ActionExecutedContext context)
              {
              base.OnActionExecuted(context);
              //called after executing the action
              _context.Language.Add(new Language { LanguageName = "L1"});
              _context.SaveChanges();
              }
              }



            • Use method.



                  [TypeFilter(typeof(FileDownloadCompleteActionFilter))]
              public IActionResult About()
              {
              ViewData["Message"] = "Your application description page.";

              return View();
              }







            share|improve this answer





















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              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              1














              What if you created a custom stream class that allowed you to log that event? Something like this:



              public class MyAwesomeStream : FileStream
              {
              //...
              public override Dispose(bool disposing)
              {
              //do your event logging / handling here

              base.Dispose(disposing);
              )
              }


              Then just swap that in wherever you were using FileStream.






              share|improve this answer


























                1














                What if you created a custom stream class that allowed you to log that event? Something like this:



                public class MyAwesomeStream : FileStream
                {
                //...
                public override Dispose(bool disposing)
                {
                //do your event logging / handling here

                base.Dispose(disposing);
                )
                }


                Then just swap that in wherever you were using FileStream.






                share|improve this answer
























                  1












                  1








                  1






                  What if you created a custom stream class that allowed you to log that event? Something like this:



                  public class MyAwesomeStream : FileStream
                  {
                  //...
                  public override Dispose(bool disposing)
                  {
                  //do your event logging / handling here

                  base.Dispose(disposing);
                  )
                  }


                  Then just swap that in wherever you were using FileStream.






                  share|improve this answer












                  What if you created a custom stream class that allowed you to log that event? Something like this:



                  public class MyAwesomeStream : FileStream
                  {
                  //...
                  public override Dispose(bool disposing)
                  {
                  //do your event logging / handling here

                  base.Dispose(disposing);
                  )
                  }


                  Then just swap that in wherever you were using FileStream.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 19 '18 at 19:54









                  BecuzzBecuzz

                  6,0942034




                  6,0942034

























                      1














                      For executing a method after download complete, you could try ActionFilter, its OnActionExecuted will be called after Download method complete.





                      • FileDownloadCompleteActionFilter.cs



                        public class FileDownloadCompleteActionFilter : ActionFilterAttribute
                        {
                        private readonly MVCProContext _context;
                        public FileDownloadCompleteActionFilter(MVCProContext context)
                        {
                        _context = context;
                        }
                        public override void OnActionExecuted(ActionExecutedContext context)
                        {
                        base.OnActionExecuted(context);
                        //called after executing the action
                        _context.Language.Add(new Language { LanguageName = "L1"});
                        _context.SaveChanges();
                        }
                        }



                      • Use method.



                            [TypeFilter(typeof(FileDownloadCompleteActionFilter))]
                        public IActionResult About()
                        {
                        ViewData["Message"] = "Your application description page.";

                        return View();
                        }







                      share|improve this answer


























                        1














                        For executing a method after download complete, you could try ActionFilter, its OnActionExecuted will be called after Download method complete.





                        • FileDownloadCompleteActionFilter.cs



                          public class FileDownloadCompleteActionFilter : ActionFilterAttribute
                          {
                          private readonly MVCProContext _context;
                          public FileDownloadCompleteActionFilter(MVCProContext context)
                          {
                          _context = context;
                          }
                          public override void OnActionExecuted(ActionExecutedContext context)
                          {
                          base.OnActionExecuted(context);
                          //called after executing the action
                          _context.Language.Add(new Language { LanguageName = "L1"});
                          _context.SaveChanges();
                          }
                          }



                        • Use method.



                              [TypeFilter(typeof(FileDownloadCompleteActionFilter))]
                          public IActionResult About()
                          {
                          ViewData["Message"] = "Your application description page.";

                          return View();
                          }







                        share|improve this answer
























                          1












                          1








                          1






                          For executing a method after download complete, you could try ActionFilter, its OnActionExecuted will be called after Download method complete.





                          • FileDownloadCompleteActionFilter.cs



                            public class FileDownloadCompleteActionFilter : ActionFilterAttribute
                            {
                            private readonly MVCProContext _context;
                            public FileDownloadCompleteActionFilter(MVCProContext context)
                            {
                            _context = context;
                            }
                            public override void OnActionExecuted(ActionExecutedContext context)
                            {
                            base.OnActionExecuted(context);
                            //called after executing the action
                            _context.Language.Add(new Language { LanguageName = "L1"});
                            _context.SaveChanges();
                            }
                            }



                          • Use method.



                                [TypeFilter(typeof(FileDownloadCompleteActionFilter))]
                            public IActionResult About()
                            {
                            ViewData["Message"] = "Your application description page.";

                            return View();
                            }







                          share|improve this answer












                          For executing a method after download complete, you could try ActionFilter, its OnActionExecuted will be called after Download method complete.





                          • FileDownloadCompleteActionFilter.cs



                            public class FileDownloadCompleteActionFilter : ActionFilterAttribute
                            {
                            private readonly MVCProContext _context;
                            public FileDownloadCompleteActionFilter(MVCProContext context)
                            {
                            _context = context;
                            }
                            public override void OnActionExecuted(ActionExecutedContext context)
                            {
                            base.OnActionExecuted(context);
                            //called after executing the action
                            _context.Language.Add(new Language { LanguageName = "L1"});
                            _context.SaveChanges();
                            }
                            }



                          • Use method.



                                [TypeFilter(typeof(FileDownloadCompleteActionFilter))]
                            public IActionResult About()
                            {
                            ViewData["Message"] = "Your application description page.";

                            return View();
                            }








                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Nov 21 '18 at 6:26









                          Tao ZhouTao Zhou

                          5,29231128




                          5,29231128






























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