Tutorial by Examples

Using an Asynchronous Controller in ASP.NET MVC. The AsyncController class enables you to write asynchronous action methods. You can use asynchronous action methods for long-running, non-CPU bound requests. This avoids blocking the Web server from performing work while the request is being processed...

public async Task<actionresult> Index() { return View("View", await db.UserMasers.ToListAsync()); }