Make your options immutable in ASP.NET Core 5

If you’ve been using ASP.NET Core 5 for a while, you’ll be delighted to learn that a major improvement of C# 9, in other words C# 9 (delivered with .NET 5) that allows the creation of immutable objects through Init-only properties. As a result, you’ll have the ability to set up your application options so that they’re immutable. After all, these are a kind of constants that you don’t necessarily want to change after initialization, or even ban it. So it’s possible with ASP.NET Core 5 and C# 9.