Singleton.cs

pulic class Singleton 
{
  private static readonly object _mutex = new object();
  private static Singleton _instance;
  
  private Singleton()
  {
  }
  
  public static Singleton Instance
  {
    get
    {
      if(_instance == null)
      {
        lock(_mutex)
        {
          if(_instance == null)
          {
            _instance = new Singleton();
          }
        }
      }
      
      return _instance;
    }
  }
}