Disposable

  public class DisposableExample : IDisposable
    {
        private bool disposed = false;
        protected void Dispose(bool disposing)
        {
            if (!disposed)
            {
                if (disposing)
                { 
                    //Dispose managed resources
                }
                //Dispose umanaged resources

                disposed = true;
            }
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);//It means suppress Destructor, if Dispose is called , Destructor will not be called
        }

        ~DisposableExample()
        {
            Dispose(false);
        }

    }