Engine中执行gp工具返回的要素图层怎么获取

来自：http://zhihu.esrichina.com.cn/?/question/12087

Engine中执行gp工具返回的【解决办法】：
需要用gpUtils.DecodeFeatureLayer方法将gp工具生成的图层先读取出来，如：

// Intialize the geoprocessor.Geoprocessor GP = new Geoprocessor();// Intialize the MakeFeatureLayer tool.MakeFeatureLayer makefeaturelayer = new MakeFeatureLayer();// Set up the GP tool parameters and run the tool.makefeaturelayer.in_features = @C:\gp\nfld.gdb\wells;makefeaturelayer.out_layer = Wells_Lyr;makefeaturelayer.where_clause = WELL_YIELD > 150;IGeoProcessorResult result = (IGeoProcessorResult)GP.Execute(makefeaturelayer, null);IFeatureClass fc;IQueryFilter qf;IGPUtilities gpUtils = new GPUtilitiesClass();gpUtils.DecodeFeatureLayer(result.GetOutput(0), out fc, out qf);IFeatureCursor cursor = fc.Insert(true);

要素图层如何获取？比如make query layer工具