If you come to C# with a Java background you may easily be fooled to think it is similar to int and Integer or boolean and Boolean in case you are not aware tha

If you come to C# with a Java background you may easily be fooled to think it is similar to int and Integer or boolean and Boolean in case you are not aware that .NET has a unified type system. And, by the way, I hate these aliases because they mess up the look of the code - not only the syntax highlighting color which is easy to change, but now there are lower and upper case type names. Soooo ugly!