.net - When should I use a struct instead of a class?

MSDN says that you should use structs when you need lightweight objects. Are there any other scenarios when a struct is preferable over a class?

Some people might have forgotten that:

1. structs can have methods.



2. structs cannot be inherited.

I understand the technical differences between structs and classes, I just don't have a good feel for when to use a struct.

Answer

MSDN has the answer:
Choosing Between Classes and Structures.

Basically, that page gives you a 4-item checklist and says to use a class unless your type meets all of the criteria.

Do not define a structure unless the
type has all of the following
characteristics:

• It logically represents a single value, similar to primitive types
  (integer, double, and so on).


• It has an instance size smaller than 16 bytes.


• It is immutable.



• It will not have to be boxed frequently.