Classes vs Structures

Ever wondered what are the differences between classes and structures and when you should use which one. According to Donis Marshall in his book called Visual C# 2005: The Language he mentions:

"Structures are lightweight classes. Because structures reside on the stack, keep them small. Do not cache large objects on the stack. The implementation of structures in C# enforces the policy of using a structure as lightweight class. The following list details the differences between structures and classes:

• Structures are sealed and cannot be inherited.
• Structures cannot inherit classes and other structures
• Structure implicitly inherits from System.ValueType
• The default constructor of a structure cannot be replaced by a custom constructor.
• Structures do not have destructors.
• Field initialization is not allowed. Const members of a structure can be initialized. "