C#实现IDisposable接口释放资源模板

 public class Foo : IDisposable
    {
        private bool _disposed;
        private object _obj=new object();
        public void Dispose()
        {
            Dispose(true);
            // 请求公共语言运行时不要调用该对象上的终结器（在C#中就是指不要调用析构函数）
            GC.SuppressFinalize(this);
        }
        [System.Runtime.InteropServices.DllImport("Kernel32")]
        private extern static Boolean CloseHandle(IntPtr handle);
        protected virtual void Dispose(bool disposing)
        {
            // 保证线程安全
            lock (_obj)
            {
                if (!_disposed)
                {
                    if (disposing)
                    {
                        // Release managed resources
                    }

                    // Release unmanaged resources

                    _disposed = true;
                }
            }
        }
        public void Close()
        {
            Dispose();
        }
        ~Foo()
        {
            Dispose(false);
        }
    }