what is anonymous types in c#?

Sometime a function is used with delegate. It never called directly as a stand-alone method. Anonymous methods are nameless method. They prevents creating a separate methods unnecessarily, which more cleaner and convenient approach.

Define an anonymous method with the delegate keyword and a nameless function body. This code assigns an anonymous method to delegate. The anonymous method must not have a signature. The signature and return type is inferred from the delegate type. For example if the delegate has three parameters and return a double type, then the anonymous method would also have the same signature