Wednesday, January 13, 2016

Why we use Static Class

Introduction:
This article explains why we use static class and what main features of a static class are. A static class is basically the same as a non-static class, but there is one difference: a static class cannot be instantiated. In other words, you cannot use the new keyword to create a variable of the class type. Because there is no instance variable, you access the members of a static class by using the class name itself. Read More

If a class is declared as static then the variables and methods should compulsorily be declared as static.

A class can be declared static, indicating that it contains only static members. It is not possible to create instances of a static class using the new keyword. Static classes are loaded automatically by the .NET Framework common language runtime (CLR) when the program or namespace containing the class is loaded.

Use a static class to contain methods that are not associated with a particular object. For example, it is a common requirement to create a set of methods that do not act on instance data and are not associated to a specific object in your code. You could use a static class to hold those methods.

The main features of a static class are:
  • They only contain static members.
  • They cannot be instantiated.
  • They are sealed.
  • They cannot contain Instance Constructors or simply constructors as we know that they are associated with objects and operates on data when an object is created.

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