Learn how to read request headers and work with optional data that is passed between the server and client in ASP.NET Core 5 applications. ASP.NET Core MVC 5 is a lightweight, open source framework ...

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Learn to change the default behavior and return HTTP 404 when action methods in ASP.NET Core return null values. ASP.NET Core MVC is the .NET Core counterpart of the ASP.NET MVC framework. You can ...

In ASP.NET MVC, the File helper method built into your controller gives you multiple options for retrieving the file you want to send to the client. You can pass the File helper method an array of ...

[Editor's note: Peter rewrote this article after a reader pointed out he over-engineered his original solution. ("What can I say: The code worked -- I just didn't need nearly as much code as I thought ...

I've got a web app that requires a user to specify the path to a datasource (xml) file for processing. Instead of doing a file-upload inside of an ASP.Net page and actually transferring the XML file ...