How to create a class which can only have a single instance in C#

Question

I wonder if there is a mechanism or pattern to allow only one instance of a class in C#. I have heard of the Singleton class, but i don\'t know how to use it we

Answer 1

One option is to just declare a static class with only static members. Or you can implement the Singleton pattern by giving the class a private constructor:

public class MySingleton
{
    public static readonly MySingleton Instance = new MySingleton();

    private MySingleton() { }

    // Members ...
}