ArcGIS Server 动态添加栅格数据

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public void AddRasterLayerToMap(string Path,string FileName,IServerContext pMapServerContext)
    {
         IMap pMap;
         IRasterLayer pRasterLayer;
         IWorkspaceFactory pWorkspaceFactory;
         IRasterWorkspace pRasterWorkspace ;
         IRasterDataset pRasterDataset ;
         IMapServer2 pMapServer ;
         IMapServerObjects2 pMapServerObjects2;
         pWorkspaceFactory = (IWorkspaceFactory)pMapServerContext.CreateObject("esriDataSourcesRaster.RasterWorkspaceFactory");
         pRasterWorkspace = (IRasterWorkspace)pWorkspaceFactory.OpenFromFile(Path, 0);
         pRasterDataset = pRasterWorkspace.OpenRasterDataset(FileName);
         pRasterLayer = (IRasterLayer)pMapServerContext.CreateObject("esriCarto.RasterLayer");
         pRasterLayer.CreateFromDataset(pRasterDataset);
         pMapServerObjects2 = (IMapServerObjects2)pMapServerContext.ServerObject;
         pMapServer = (IMapServer2)pMapServerObjects2;
         pMapServerObjects2.get_Map(pMapServer.DefaultMapName).ClearLayers();
         pMap = pMapServerObjects2.get_Map(pMapServer.DefaultMapName);
         pMap.AddLayer(pRasterLayer);
         pMap.AreaOfInterest = pRasterLayer.AreaOfInterest;
         pMapServerObjects2.RefreshServerObjects();
    }