arcgis ao/ae中删除featureclass的方法（可以是shp、layer、featureclass）

//删除featureclass

//如果已存在,那么删除

              //常规的打开workspace   省去
            IFeatureClass pFCChecker = pFeatureWorkSpace.OpenFeatureClass(featureclass);
            if (pFCChecker != null)
            {
                IDataset pds = pFCChecker as IDataset;
                pds.Delete();