public string[] strfname;    //得到地图内所有缓冲区内的地物名称public int n;//得到缓冲区内的个数public void CreatBuffer(AxMapControl mc, double x, double y, double Dist, string sLayerName)//创造缓冲区函数{IMap pMap = mc.Map;IActiveView pActiveView = (IActiveView)pMap;IGraphicsContainer pGraphicsContainer = (IGraphicsContainer)pMap;ISimpleFillSymbol pFillSym = new SimpleFillSymbolClass();IRgbColor pColor = new RgbColorClass();pColor = getcolor(255, 255, 0, 255);ILineSymbol pOutline = new SimpleLineSymbolClass();pOutline.Width = 1;pOutline.Color = pColor;pFillSym.Style = esriSimpleFillStyle.esriSFSCross;pFillSym.Color = pColor;pFillSym.Outline = pOutline;IPoint pPoint = new PointClass();pPoint.PutCoords(x, y);ITopologicalOperator pTopol = (ITopologicalOperator)pPoint;IGeometry pBuffer = pTopol.Buffer(Dist);IFillShapeElement pFillEle = new CircleElementClass();pFillEle.Symbol = pFillSym;IElement pEle = (IElement)pFillEle;pEle.Geometry = pBuffer;pGraphicsContainer.AddElement(pEle, 0);//画出缓冲区图形ISpatialFilter pFilter=new SpatialFilter();pFilter.Geometry=pBuffer;pFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;IQueryFilter pQueryFilter=pFilter as QueryFilter;IFeatureLayer pFeatureLayer;pFeatureLayer = mc.get_Layer(GetLayerFromName(sLayerName, mc)) as IFeatureLayer;if (pFeatureLayer == null)return;mc.Map.ClearSelection();IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;IFeatureCursor pFeatureCursor = pFeatureClass.Search(pQueryFilter, false);IFeature pFeature = pFeatureCursor.NextFeature();IFeatureSelection pFeatureSelection = pFeatureLayer as IFeatureSelection;pFeatureSelection.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultNew, false);ISelectionSet pSelection = pFeatureSelection.SelectionSet;n=pSelection.Count;strfname = new string[n];int namenumber = 0;while (pFeature != null){mc.FlashShape(pFeature.Shape, 1, 100, null);mc.DrawShape(pFeature.Shape);strfname[namenumber]=pFeature.get_Value(2).ToString();mc.Map.SelectFeature(mc.get_Layer(GetLayerFromName(sLayerName, mc)), pFeature);pFeature = pFeatureCursor.NextFeature();namenumber++;}pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);}