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Adding checks to your C# methods to check if an argument is null or empty will easily add 3 to 5 lines, depending on how you do it. Lets see how to fix that and make it just 1 line. So here in my Visual Studio, I have this very simple class, GeraldsChannel, with a constructor and one method, Subscribe, which takes in a Subscriber object. Now, in my Subscribe method, Im going to check if subscriber is null, throw new ArgumentNullException(), etc. Etc. What if I told you that but you can do this in just 1 line? Lets remove all this and lets just go with ArgumentNullException .ThrowIfNull(). And here you can say nameof(subscriber). So the calling party will have the argument that is actually null here. And now you can do ThrowIfNull(). If you want to do this for strings, you also have ArgumentNullException .ThrowIfNullOrEmpty(), and you can check if a string is actually empty here. Now you can remove that extra level of indentation and you know how to work with ArgumentNullExceptions
