Static class in C#

C# provides the important feature to create static classes, there are two main features of a static class, one is no object of static class can be created and another is, a static class must contain only static members, then it is important that what is the main benefit to create a static class, the main benefit of making static class, we do not need to make any instance of this class ,all members can be accessible with its own name.

Declaration:

A static class is created by using keyword 'Static' as shown here:

Static class Clasname
{
   //C#
}

One more thing that is notable-within static class, all members must be explicitly specified as static, static class does not automatically make its members static. Static class can contain a collection of static methods.

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);

    }

}

Shape is static class, it contain staic function GetArea.Ractangle is other class and with in GetArea function can be access without creating instace of Class Shape.

Although a static class cannot have an instance constructor, it can have a static constructor