How slow is passing large strings as return values in C#?

Question

I want to know how return values for strings works for strings in C#. In one of my functions, I generate html code and the string is really huge, I then return it from the function, and then insert it into the page. But I want to know should I pass a huge string as a return value, or just insert it into the page from the same function?

When C# returns a string, does it create a new string from the old one, and return that?

Thanks.

Answer 1

Strings (or any other reference type) are not copied when returning from a function, only value types are.