The gang at Microsoft has been working on the new ASP.NET MVC -- Model-View-Controller -- framework for a while. In February they announced the MVC Framework v0.

Visual Studio Magazine's stable of expert programmers this year wrote code-laden, hands-on tutorials ranging from traditional topics such as ASP.NET MVC to cutting-edge Blazor to Microsoft's new ...

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