C#: static methods

As we know instance methods are associated with an object, where as class methods are associated with class.

Syntax

 accessModifier static dataType methodName(parameters){

    }

Example

Public static int getNoOfEmployees(){

}

Static methods called with class name.

Syntax to call class Methods

ClassName.methodName();

Program.cs

using System;

class Person
{
    static int count = 0;

    public Person()
    {
        count++;
    }

    public static int totalPerson()
    {
        return count;
    }
}

class Program
{

    static void Main(string[] args)
    {
        Person personA = new Person();
        Person personB = new Person();

        Console.WriteLine("Total objects : {0}", Person.totalPerson());

        Person personC = new Person();
        Person personD = new Person();

        Console.WriteLine("Total objects : {0}", Person.totalPerson());
    }

}

Output

Total objects : 2

Total objects : 4

Points to Remember

a.   You can't call instance method from static method.

b.   Static methods can't access instance variables

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