C# Singleton Pattern

Singleton.cs

namespace Gucu112.SingletonPattern
{
  class Singleton : IDisposable
  {
    private static Lazy<Singleton> instance
      = new Lazy<Singleton>(() => new Singleton());

    private Singleton()
    {
      // Singleton initialized
    }
    
    public static Singleton Instance => instance.Value;
    
    public void Dispose()
    {
      if (instance.IsValueCreated)
      {
        // Singleton disposed
        instance = new Lazy<Singleton>(() => new Singleton());
      }
    }
  }
}

SingletonPattern.linq

<Query Kind="Program" />

void Main()
{
  "Calling singleton dispose".Dump();
  Singleton.Instance.Dispose();
  
  "Calling singleton instance in using clause".Dump();
  using (var singleton = Singleton.Instance)
  {
    "Using singleton instance".Dump();
  }
  
  "Calling singleton instance".Dump();
  var test = Singleton.Instance;
  
  "Calling singleton dispose".Dump();
  Singleton.Instance.Dispose();
  
  "Calling singleton dispose".Dump();
  Singleton.Instance.Dispose();
}

public class Singleton : IDisposable
{
  private static Lazy<Singleton> instance
    = new Lazy<Singleton>(() => new Singleton());

  private Singleton()
  {
    "Singleton initialized".Dump();
  }
  
  public static Singleton Instance => instance.Value;
  
  public void Dispose()
  {
    if (instance.IsValueCreated)
    {
      "Singleton disposed".Dump();
      instance = new Lazy<Singleton>(() => new Singleton());
    }
  }
}