ArcEngine保存栅格数据至rastercatalog

　　将栅格数据（IRasterDataset）直接保存到数据库中很常见，但是保存到栅格目录下就比较少见，好不容易才找到，在这里记录一下。

 1         public void saveRasterDs2Catalog(IRasterDataset rasterDs, IRasterCatalog rasterCatalog)
 2         {
 3             //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
 4             IRasterProps rProps = rasterDs.CreateDefaultRaster() as IRasterProps;
 5             rasterCatalog.AlterRasterSpatialReference(rProps.SpatialReference);
 6 
 7             IFeatureClass featureclass = rasterCatalog as IFeatureClass;
 8             IFeature feature = featureclass.CreateFeature();
 9 
10             IRasterValue rValue = new RasterValueClass();
11             rValue.RasterDataset = rasterDs;
12             feature.set_Value(rasterCatalog.RasterFieldIndex, rValue);
13             //如果栅格目录里还有其他属性，也可以在这里设置
14             feature.Store();
15         }
16 
17         /// <summary>
18         /// 把一个文件夹里的栅格数据都保存到rastercatalog中
19         /// </summary>
20         /// <param name="propertySet">数据库的连接属性</param>
21         /// <param name="catalogName">rastercatalog的名称</param>
22         /// <param name="rasterFolder">包含有栅格数据的文件夹</param>
23         public void loadDir2Catalog(IPropertySet propertySet,String catalogName,String rasterFolder)
24         {
25             //IWorkspaceFactory wkspFactory = new SdeWorkspaceFactoryClass();
26             //IWorkspace wksp = wkspFactory.Open(propertySet, 0);
27             //IRasterWorkspaceEx rasterWkspEx = wksp as IRasterWorkspaceEx;
28             //IRasterCatalog rasterCatalog = rasterWkspEx.OpenRasterCatalog(catalogName);
29 
30             ITrackCancel pTrackCancel = new TrackCancel();
31             IRasterCatalogLoader rCatalogLoader = new RasterCatalogLoaderClass();
32             rCatalogLoader.ConnectionProperties = propertySet;
33             rCatalogLoader.Load(catalogName, rasterFolder, pTrackCancel);
34         }