Async Controllers (MVC), long running process with “stops”

Question

I\'m interested in running a long process, I want to update the UI as soon as results start coming in and not wait for it to finish.

How would I go about this? I\'ve

Answer 1

This article seems to describe what you want, simple and w/o SignalR:

ASP.NET MVC 3: Async jQuery progress indicator for long running tasks

Controller:

public class HomeController : Controller { private static IDictionary tasks = new Dictionary();

 public ActionResult Index()
 {
   return View();
 }

 public ActionResult Start()
 {
   var taskId = Guid.NewGuid();
   tasks.Add(taskId, 0);

   Task.Factory.StartNew(() =>
   {
     for (var i = 0; i <= 100; i++)
     {
       tasks[taskId] = i; // update task progress
       Thread.Sleep(50); // simulate long running operation
     }
     tasks.Remove(taskId);
   });

   return Json(taskId);
 }

 public ActionResult Progress(Guid id)
 {
   return Json(tasks.Keys.Contains(id) ? tasks[id] : 100);
 }

}

View: