The dispose pattern.

DisposePattern.cs

        #region Dispose Pattern

        private bool _disposed;

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (!_disposed)
            {
                if (disposing)
                {
                    if (_resource != null)
                        _resource.Dispose();
                }

                _resource = null;
                _disposed = true;
            }
        }

        #endregion