c#+ArcGIS Engine-获取矢量图层的空间参考

介绍一种简单的获取矢量图层空间参考的方法：
首先打开Shp文件获得FeatureClass，代码如下：

string pPath="D:\\test.shp";

string pFolder=Path.GetDirectoryName (pPath);

string pFileName=Path.GetFileName(pPath);

IWorkspace pWorkspace=pWorkspaceFactory .OpenFromFile(pFolder ,0);

IFeatureWorkspace pFeatureWorkspace =pWorkspace as IFeatureWorkspace ;

IFeatureClass pFeatureClass=pFeatureWorkspace .OpenFeatureClass (pFileName ); 

然后 由FeatureClass得到空间参考，代码如下：

IGeoDataset pGeoDataset = (IGeoDataset)pFeatureClass;

ISpatialReference pSpatialReference = pGeoDataset.SpatialReference;