* CSharp Tip #1 : Static Classes

In .NET Framework 1.x, Static Classes are created by defining a class with a private constructor with one or more static members so that instance of the class cannot be created using new operator.

In .NET Framework 2.0 the need for such a private constructor is avoided by using a static keyword along with the class definition. Static classes are sealed and therefore cannot be inherited. Static classes cannot contain a constructor, although it is still possible to declare a static constructor to assign initial values.

using System;
using System.Collections.Generic;
using System.Text;

namespace VikasGoyal.StaticClasses
{
   class Program
   {
       static void Main(string[] args)
       {
           Console.WriteLine(StaticClass.getName());
           Console.WriteLine(StaticClass.getName());
           Console.WriteLine(StaticClass.getName());
       }
   }
   static class StaticClass
   {
       private static string name;
       static StaticClass()
       {
           name = "Vikas Goyal";
           Console.WriteLine("In Constructor");
       }
       public static string getName()
       {
           return name;
       }
   }
}

OUTPUT

In Constructor
Vikas Goyal
Vikas Goyal
Vikas Goyal