ArcGis Engine 矢量图层和栅格图层的加载

//此处为矢量图层的加载方法，由于图层本身是已经制作好了的MXD类工程文件，所以直接采用MXD的加载方式　　　　　　　if (axMapControl1.CheckMxFile(shpFile))//判断是否为MXD文件
            {
                IArray pArry;
                pArry = axMapControl1.ReadMxMaps(shpFile, Type.Missing);
                IMap pMap;
                for (int i = 0; i < pArry.Count; i++)
                {
                    pMap = pArry.get_Element(i) as IMap;
                    if (pMap.Name == "Layers")
                    {
                        axMapControl1.MousePointer = esriControlsMousePointer.esriPointerHourglass;
                        axMapControl1.LoadMxFile(shpFile, 0, Type.Missing);
                        axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;
                    }
                }

    //此处为栅格图层的加载方式，需要打开IWorkSpace            　　　　　string filePath = "文件路径";
            string pathName = System.IO.Path.GetDirectoryName(filePath);
            string fileName = System.IO.Path.GetFileName(filePath);
            IWorkspaceFactory pWSF;
            pWSF = new RasterWorkspaceFactoryClass();
            IWorkspace pWS;
            pWS = pWSF.OpenFromFile(pathName, 0);
            IRasterWorkspace pRWS;
            pRWS = pWS as IRasterWorkspace;
            IRasterDataset pRasterDataset;
            pRasterDataset = pRWS.OpenRasterDataset(fileName);
            IRasterPyramid pRasPyrmid;
            pRasPyrmid = pRasterDataset as IRasterPyramid;

            if (pRasPyrmid != null)
            {
                if (!(pRasPyrmid.Present))
                {
                    pRasPyrmid.Create();
                }
            }
            IRaster pRaster;
            pRaster = pRasterDataset.CreateDefaultRaster();
            IRasterLayer pRasterLayer;
            pRasterLayer = new RasterLayerClass();
            pRasterLayer.CreateFromRaster(pRaster);
            ILayer pLayer = pRasterLayer as ILayer;
            axMapControl1.AddLayer(pLayer, 2);//设置栅格图层的显示层次