With ASP.NET MVC 4 comes the application of the async/await model to controller actions. A traditional ASP.NET MVC control action will be synchronous by nature; this means a thread in the ASP.NET ...

Learn to change the default behavior and return HTTP 404 when action methods in ASP.NET Core return null values.

Take advantage of the friendly syntax of Razor View Engine to more easily create views from templates in ASP.NET Core MVC.

You have multiple choices when it comes to returning files from your Controller to the client: It all depends where your file is.