ArcEngine——获取要素几何（非游标方式）

IFeatureClass pFeaCls = pFeaLyr.FeatureClass;
IEnumGeometryBind pEnmGeoBind = new EnumFeatureGeometryClass();
pEnmGeoBind.BindGeometrySource(null, pFeaCls);
IEnumGeometry pEnmGeo = pEnmGeoBind as IEnumGeometry;