ARCEngine中查询对象

        private void id2ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(7) as IFeatureLayer;
            string sqlfilter = "FID>2";
            SearchFeature(sqlfilter, pFeatureLayer);
        }
        private void SearchFeature(string sqlfilter, IFeatureLayer pFeatureLayer)
        {
            IFeatureLayer pFeatLyr = pFeatureLayer;
            IQueryFilter pFilter = new QueryFilterClass();//定义一个过滤器对象
            pFilter.WhereClause = sqlfilter;//添加过滤参数
            IFeatureCursor pFeatCursor = pFeatLyr.Search(pFilter, true);
            IFeature pFeat = pFeatCursor.NextFeature();
            while (pFeat != null)
            {
                pFeat = pFeatCursor.NextFeature();
                if (pFeat != null)
                {
                    ISimpleFillSymbol pFillsyl = new SimpleFillSymbolClass();
                    pFillsyl.Color = GetRGB(200, 50, 50);
                    object oFillsyl = pFillsyl;
                    IPolygon pPlolygon = pFeat.Shape as IPolygon;//使用FilashShape来使要素闪烁
                    axMapControl1.FlashShape(pPlolygon, 2, 1, pFillsyl);
                    axMapControl1.DrawShape(pPlolygon, ref oFillsyl);
                }
            }
        }
        private IColor GetRGB(int p1, int p2, int p3)
        {
            IRgbColor pColor = new RgbColorClass();
            pColor.Red = p1;
            pColor.Green = p2;
            pColor.Blue = p3;
            return pColor;
        }