what is the single ton object in dotnet how to create?

Answer 1

The singleton is a design pattern, and it means that there is one and only one copy of an object at runtime.

In c# this can be accomplished by using a static constructor, but the classic way to do it is using a reference-count (e.g. if the object has not been created then create it, but if it has already been created, then reuse it).

Answer 2

A Singleton class is one that allows only one instance of it to be created in the lifetime of an application.

For more info check
http://aspalliance.com/810_Implementing_a_Singleton_Pattern_in_C

Answer 3

singleton object is an alternative approach to session object that groups related items and objects.