. NET Learning 2nd quarter C # Object oriented

. Net Video Learning 2nd-quarter C # Object-oriented

Object-oriented Beginner

A class is a template that does not account for memory, which is the image generated by the template, which accounts for memory.

Fields field: Data methods method: Function Property: Protect field, limit the assignment of a field (wrap this part in a class, the outside world ignores how) the nature of the property is two methods get ()/set ()

External (and even intra-class methods) are assigned/read by attributes, and get ()/set () is qualified internally, and the field is always private, and the property is public.

namespace proj{    class  person    {        private  int _age;          Public int        Age {
get {return _age;}           Set           {              if0)              {                  value  0;              }               = value    ;     }}}

Write-only properties are allowed, and the compiler automatically generates fields corresponding to the attributes.

Create a keyword for a class object (instantiation) New

The keyword in the method that points to the object itself.

Non-static = instance, non-static class can have static members or non-static members

. NET Learning 2nd quarter C # Object oriented