AE二次开发 mapcontrol与pagelaylotcontrol的同步

Question

在disigner界面为MapControl添加了相关事件后运行出现异常
代码如下：

this.axMapControl1.OnAfterScreenDraw += new ESRI.ArcGIS.Controls.IMapControlEvents2_Ax_OnAfterScreenDrawEventHandler(this.axMapControl1_OnAfterScreenDraw);
            this.axMapControl1.OnMapReplaced += new ESRI.ArcGIS.Controls.IMapControlEvents2_Ax_OnMapReplacedEventHandler(this.axMapControl1_OnMapReplaced);
            this.axMapControl1.OnViewRefreshed += new ESRI.ArcGIS.Controls.IMapControlEvents2_Ax_OnViewRefreshedEventHandler(axMapControl1_OnViewRefreshed);

报错界面：