public void saveRasterDs2Catalog(IRasterDataset rasterDs, IRasterCatalog rasterCatalog)

         {

             //保存前先设置rasterCatalog的坐标系，不然保存的栅格数据坐标系为空

             IRasterProps rProps = rasterDs.CreateDefaultRaster() as IRasterProps;

             rasterCatalog.AlterRasterSpatialReference(rProps.SpatialReference);

             IFeatureClass featureclass = rasterCatalog as IFeatureClass;

             IFeature feature = featureclass.CreateFeature();

             IRasterValue rValue = new RasterValueClass();

             rValue.RasterDataset = rasterDs;

             feature.set_Value(rasterCatalog.RasterFieldIndex, rValue);

             //如果栅格目录里还有其他属性，也可以在这里设置

             feature.Store();

         }

         /// <summary>

         /// 把一个文件夹里的栅格数据都保存到rastercatalog中

         /// </summary>

         /// <param name="propertySet">数据库的连接属性</param>

         /// <param name="catalogName">rastercatalog的名称</param>

         /// <param name="rasterFolder">包含有栅格数据的文件夹</param>

         public void loadDir2Catalog(IPropertySet propertySet,String catalogName,String rasterFolder)

         {

             //IWorkspaceFactory wkspFactory = new SdeWorkspaceFactoryClass();

             //IWorkspace wksp = wkspFactory.Open(propertySet, 0);

             //IRasterWorkspaceEx rasterWkspEx = wksp as IRasterWorkspaceEx;

             //IRasterCatalog rasterCatalog = rasterWkspEx.OpenRasterCatalog(catalogName);

             ITrackCancel pTrackCancel = new TrackCancel();

             IRasterCatalogLoader rCatalogLoader = new RasterCatalogLoaderClass();

             rCatalogLoader.ConnectionProperties = propertySet;

             rCatalogLoader.Load(catalogName, rasterFolder, pTrackCancel);

         }