Static class

C# introduced a new feature known as Static Class.

A class which has only Static Methods is known as Static Class.

Benefit of Static Class:

• Object of static class cannot be created.
• All methods and members can be accessed by class Name.

Note :

• All methods of static class must be specified explicitly by keyword static.
• Static class cannot have instance constructor but it can have Static Constructor.

Example:

using System;
static class Shape
 {
    public static double GetArea(double Width, double height)
    {
        return Width * Height;
    }
 }

class Ractangle
{
   private void GetRactangleArea()
   {
     Double Area;
     Area = Shape.GetArea(10, 5);
   }
 }

Explanation:

In above Example Shape is Static class and contains static method named GetArea().

And other class (Rectangle) access the GetArea() method without creating the instance of class Shape.