按照Engine+开发手册ArcEngine_10.0_C#二次开发编写的鹰眼的代码，运行时鹰眼不显示！

比如添加事件（在添加完mxd后执行下面代码）：
  IActiveViewEvents_Event events = axMapControl1.ActiveView as IActiveViewEvents_Event;
            events.ItemAdded += new IActiveViewEvents_ItemAddedEventHandler(ItemAdded);
然后在ItemAdded方法中执行同步：
  private void ItemAdded(System.Object Item)
        {

            // TODO: Add your code here
            if (this.axMapControl1.LayerCount > 0)
            {
                              
                axMapControl2.AddLayer(Item as ILayer);                
                axMapControl2.Extent = axMapControl1.Extent;
                axMapControl2.Refresh();

            }
        }
注意，新添加的图层需要与mxd的已有图层能同时显示出来，也就是说空间参考一致

原因：Add Data新加栅格数据时没有触发相应的事件，所以MapControl2中不会加载该数据。
可以尝试添加IActiveViewEvents.ItemAdded事件，在该事件的处理函数中执行 

这个是Form的完整代码using ESRI.ArcGIS.Output;

using System;

using System.Windows.Forms;

using ESRI.ArcGIS.Carto;

using ESRI.ArcGIS.Display;

using ESRI.ArcGIS.Geometry;







namespace WindowsFormsApplication2

{

    public partial class Form1 : Form

    {

        

        public Form1()

        {

            InitializeComponent();

        }



       



        private void axLicenseControl1_Enter(object sender, EventArgs e)

        {



        }



        private void axToolbarControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.IToolbarControlEvents_OnMouseDownEvent e)

        {



        }



        private void axMapControl1_OnMapReplaced(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMapReplacedEvent e)

        {

             if (this.axMapControl1.LayerCount > 0)

            {

                this.axMapControl2.Map=new MapClass();

                for (int i = 0; i <= (axMapControl1.Map.LayerCount - 1); i++)

                {

                    axMapControl2.AddLayer(axMapControl1.get_Layer(i));

                }

                axMapControl2.Extent = axMapControl1.Extent;

                axMapControl2.Refresh();



            }

        }



      

        private void axMapControl2_OnMouseDown(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent e)

        {

            if (axMapControl2.Map.LayerCount > 0)

            {

                if (e.button == 1)

                {

                    IPoint pPoint = new PointClass();

                    pPoint.PutCoords(e.mapX, e.mapY);

                    axMapControl1.CenterAt(pPoint);

                    this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);

                }

                else if (e.button == 2)

                {

                    IEnvelope pEnv = axMapControl2.TrackRectangle();

                    axMapControl1.Extent = pEnv;

                    this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);

                }

          }

        }



        private void axMapControl1_OnExtentUpdated(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnExtentUpdatedEvent e)

        {

            //得到新范围

            IEnvelope pEnvelope = (IEnvelope)e.newEnvelope;

            IGraphicsContainer pGraphicsContainer =this.axMapControl2.Map as IGraphicsContainer;

            IActiveView pActiveView = pGraphicsContainer as IActiveView;

            

            //在绘制前，清除axMapControl2中的任何图形元素

            pGraphicsContainer.DeleteAllElements();

            IRectangleElement pRectangleEle =new RectangleElementClass();

            IElement pElement = pRectangleEle as IElement;

            pElement.Geometry = pEnvelope; 

            //设置鹰眼图中的红线框

            IRgbColor pColor = new RgbColorClass();

            pColor.Red = 255;

            pColor.Green = 0;

            pColor.Blue = 0;

            pColor.Transparency = 255;

            //产生一个线符号对象

            ILineSymbol pOutline = new SimpleLineSymbolClass();

            pOutline.Width = 1;

            pOutline.Color = pColor;

            //设置颜色属性

            pColor = new RgbColorClass();

            pColor.Red = 255;

            pColor.Green = 0;

            pColor.Blue = 0;

            pColor.Transparency = 0;

            //设置填充符号的属性

            IFillSymbol pFillSymbol = new SimpleFillSymbolClass();

        pFillSymbol.Color = pColor;

            pFillSymbol.Outline = pOutline;

        IFillShapeElement pFillShapeEle = pElement as IFillShapeElement;

            pFillShapeEle.Symbol=pFillSymbol;

            pGraphicsContainer.AddElement((IElement)pFillShapeEle,0);

            pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics,null,null);

         }



        private void axMapControl2_OnMouseMove(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseMoveEvent e)

        {

            if (e.button == 1)

            {

                IPoint pPoint = new PointClass();

                pPoint.PutCoords(e.mapX, e.mapY);

                this.axMapControl1.CenterAt(pPoint);

                this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);

             }

        }

    }

}

这个问题是怎么解决的？

目前还没有解决，不过如果打开MXD文件的话是可以正常显示的，但是如果单单是加载图层就不行。有网友讲是坐标系统的问题，但是我还是初学，不晓得如何使得坐标系统一致起来