How to have comments in IntelliSense for function in Visual Studio?

Question

In Visual Studio and C#, when using a built in function such as ToString(), IntelliSense shows a yellow box explaining what it does.

How can I ha

Answer 1

use /// to begin each line of the comment and have the comment contain the appropriate xml for the meta data reader.

///

/// this method says hello
///
public void SayHello();

Although personally, I believe that these comments are usually misguided, unless you are developing classes where the code cannot be read by its consumers.