[C#]Class and struct differences

From MSDN

Structs differ from classes in several important ways:

• Structs are value types (Section 11.3.1).
• All struct types implicitly inherit from the class System.ValueType (Section 11.3.2).
• Assignment to a variable of a struct type creates a copy of the value being assigned (Section 11.3.3).
• The default value of a struct is the value produced by setting all value type fields to their default value and all reference type fields to null (Section 11.3.4).
• Boxing and unboxing operations are used to convert between a struct type and object (Section 11.3.5).
• The meaning of this is different for structs (Section 11.3.6).
• Instance field declarations for a struct are not permitted to include variable initializers (Section 11.3.7).
• A struct is not permitted to declare a parameterless instance constructor (Section 11.3.8).
• A struct is not permitted to declare a destructor (Section 11.3.9).