структура

public struct S : IDisposable
    {
        private bool dispose;
        public void Dispose()
        {
            dispose = true;
        }
        public bool GetDispose()
        {
            return dispose;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var s = new S(); 
            using (s)
            {
                Console.WriteLine(s.GetDispose());
            }
            Console.WriteLine(s.GetDispose());
        }
        /*result
         False
        False
         */
    }
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