Question

Hi all we can assign a value or return a value many other way.. so sometimes we are doing by properties(get,set).. can any one tell me main use of properties..

thanks
saj

Answer 1

Properties encapsulate internal logic. They are the public interface and allow you to check values, apply rules and enable to change internal implementation.

This is in contrast to exposing internals directly.

For example:

public int myField; // exposes implementation - BAD BAD BAD

Is better implemented:

private int myField;
public int MyField
{
   get {return myField;}
   set {myField = value;}
}

You can now change the internal myField and not affect other code outside the class. You can add logic to the setter, to the getter and more.

If you don’t have any logic associated with member access, you can use automatic properties:

public int MyField {get; set;}

The compiler will generate a backing field automatically.