Drill down into C # data types

I. Value types and reference types

1. Value types: References to reference types for all value types and reference types are stored on the stack

Value type Assignment principle: The true value copied on the stack

2. Reference type:

1> properties of real objects stored on the heap on the real object itself

2> heap on open space storage data

the memory address on the 3> heap is stored in the stack space

4> from the stack to the real object on the heap

Two. Structure

1. Method 5 Elements

1> return value type

2> access Modifiers

3> Method Name

4> method Body

5> Method Parameters

2. Use of structures

1> can be used without a new direct definition of the structure of the object

2> declaration must assign an initial value to a member of a struct

Three. Crating and unpacking

Four. Different types of parameter passing

1> when a value type parameter is passed using value mode (without ref decoration), the modification of the parameter in the method does not persist

2> when a reference type parameter is passed using a value method (without ref decoration), the modification of the parameter in the method is preserved

3> when a value type is passed by reference (without ref decoration) or when a reference type parameter is passed, the modification of the parameter in the method is preserved

Drill down into C # data types