When does it matter whether you use int versus Int32, or string versus String?

Question

In C#, the keywords for built-in types are simply aliases for corresponding types in the System namespace.

Generally, it makes no difference whether yo

Answer 1

The identifiers int, string, bool, etc. are C# language aliases for the real types Int32, String, and Boolean, respectively. It doesn't matter which you use, but when you're writing an API some people prefer to use the actual class types to the aliases.

Here's an MSDN article that lists the equivalents.