1、在XAML里直接引用没有问题

image.png

2、在代码里引用就会引发以上异常
解决方法

        AxShockwaveFlash flashPlayer;
        public UCFlashPlayer()
        {
            InitializeComponent();
            if (Windows.SystemIsRunning)
            {
                flashPlayer = new AxShockwaveFlash();
                winformHost.Child = flashPlayer;
                flashPlayer.OnReadyStateChange += flashPlayer_OnReadyStateChange;
                ((System.ComponentModel.ISupportInitialize)(this.flashPlayer)).BeginInit();
                
                ((System.ComponentModel.ISupportInitialize)(this.flashPlayer)).EndInit();
            }
        }