Developing Console-based UI in C#

Terminal.Gui is a library intended to create console-based applications using C#. The framework has been designed to make it easy to write applications that will work on monochrome terminals, as well as modern color terminals with mouse support. This library works across Windows, Linux and MacOS.
sirwan.info/archive/2018/05/02/Developing-Console-based-UI-in-C/

Library Manager: Client-side content manager for web apps | ASP.NET Blog

Introducing: Library Manager – Available in Visual Studio 2017 v15.7 Preview 3.0 in the Web Development and .NET Core workloads. Library Manager (“LibMan” for short) is Microsoft’s new static client-side library management system, specifically designed with web projects in mind. It provides a mechanism, similar to Bower or npm, that helps users find and fetch library files from an external source such as CDNJS or a local library catalog. Library configuration can be stored with the project and files can be downloaded during build, or with Visual Studio …
blogs.msdn.microsoft.com/webdev/2018/04/17/library-manager-client-side-content-manager-for-web-apps/

Custom error pages in ASP.NET MVC

Excellent blog post by Ben Foster:
Custom error pages in ASP.NET MVC. Easy, right? – Ben Foster

My extra take on it was to create content in the static .html pages and use an iframe inside the aspx based pages (to reuse the content easily).

E.g: (my 500 error page is named Error500.aspx)