自己做的关于select工具根据属性进行选择

 IFeatureLayer pFeLayer = axMapControl1.get_Layer(0) as IFeatureLayer;
            IDataLayer idata = pFeLayer as IDataLayer;
            IDatasetName idataname = idata.DataSourceName as IDatasetName;
            string path = idataname.WorkspaceName.PathName ;

          
            axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewAll, null, null);
            Geoprocessor gp = new Geoprocessor();
            gp.SetEnvironmentValue("workspace",path);
            gp.OverwriteOutput = true;
            ESRI.ArcGIS.AnalysisTools.Select pSelect = new Select();
            pSelect.in_features = pFeLayer .FeatureClass;
            pSelect.out_feature_class = @"E:\biancheng\3sdnMap\新地图\tiqu.shp";
            pSelect.where_clause = "GRIDCODE>50";
            gp.Execute(pSelect, null);
            IWorkspaceFactory pWspF = new ShapefileWorkspaceFactoryClass();
            IFeatureWorkspace pFW = (IFeatureWorkspace )pWspF.OpenFromFile(path,0);
            IFeatureClass pFeatureClass = pFW.OpenFeatureClass("tiqu");
            IFeatureLayer pFeatureLayer=new FeatureLayerClass () ;
            pFeatureLayer.FeatureClass = pFeatureClass;
            pFeatureLayer.Name = pFeatureClass.AliasName;
            axMapControl1.AddLayer(pFeatureLayer );