Singleton Pattern for C# [closed]

Answer 1

...what would be the very simplest singleton class?

Just to add one more possible solution. The simplest, most straight forward and easy to use approach I can think of would be something like this:

//The abstract singleton
public abstract class Singleton where T : class
{
    private static readonly Lazy instance = new Lazy( CreateInstance, true );

    public static T Instance => instance.Value;

    private static T CreateInstance()
    {
        return (T)Activator.CreateInstance( typeof(T), true);
    }
}

//This is the usage for any class, that should be a singleton
public class MyClass : Singleton
{
    private MyClass()
    {
        //Code...
    }

    //Code...
}

//Example usage of the Singleton
class Program
{
    static void Main(string[] args)
    {
        MyClass clazz = MyClass.Instance;
    }
}