A frequently required feature in modern applications is being able to upload and download files. In this post, we're going to implement file uploads with ASP.NET Core and Angular. In future posts, I'll show you more sophisticated features such as drag & drop support, multiple file uploads, validation, and previews.

A while ago I had to export some data to Excel from an ASP.NET Core website. I have implemented a lot of exporting in the past with ASP.NET and C# in general, it was fun to explore different options and port them to ASP.NET Core. In this post, I'll show you how you can generate Excel files using the ClosedXML library.

This post is a sum-up of how to make it more difficult for hackers to compromise your ASP.NET (MVC, Web API, Core) website in general. In the following paragraphs, I have listed a number of HTTP headers that are easily configured and that everyone should implement.