/// <summary>
 /// 从配置文件中读取样式
 /// </summary>
 /// <returns></returns>
 private static IDictionary <string, ISymbol> GetSymbolsFromConfig()
 {
     try
     {
         var symbolDic   = new Dictionary <string, ISymbol>();
         var routeValues = ConfigHelper.ReadAppConfig("routenetvalues").Split(',');
         foreach (var routeValue in routeValues)
         {
             var configParams = ConfigHelper.ReadAppConfig(string.Format("route_{0}", routeValue)).Split(',');
             var red          = int.Parse(configParams[0]);
             var green        = int.Parse(configParams[1]);
             var blue         = int.Parse(configParams[2]);
             var width        = double.Parse(configParams[3]);
             var lineSymbol   = new SimpleLineSymbolClass();
             lineSymbol.Color = SymbolUtil.GetColor(red, green, blue);
             lineSymbol.Width = width;
             symbolDic.Add(routeValue, lineSymbol);
         }
         return(symbolDic);
     }
     catch (Exception e)
     {
         MessageBox.Show("公路网样式配置错误");
         return(null);
     }
 }
        /// <summary>
        /// 缺省样式
        /// </summary>
        /// <returns></returns>
        private static IDictionary <string, ISymbol> GetDefaultSymbols()
        {
            //一级公路符号
            ILineSymbol pOutline1 = new SimpleLineSymbolClass();
            //二级公路符号
            ILineSymbol pOutline2 = new SimpleLineSymbolClass();
            //三级公路符号
            ILineSymbol pOutline3 = new SimpleLineSymbolClass();
            //四级公路符号
            ILineSymbol pOutline4 = new SimpleLineSymbolClass();
            //等外公路符号
            ILineSymbol pOutlineEqual = new SimpleLineSymbolClass();
            //其它公路符号
            ILineSymbol pOutlineOther = new SimpleLineSymbolClass();

            pOutline1.Color     = SymbolUtil.GetColor(255, 0, 0);
            pOutline1.Width     = 3.0;
            pOutline2.Color     = SymbolUtil.GetColor(255, 125, 0);
            pOutline2.Width     = 2.5;
            pOutline3.Color     = SymbolUtil.GetColor(255, 220, 0);
            pOutline3.Width     = 2.0;
            pOutline4.Color     = SymbolUtil.GetColor(0, 255, 0);
            pOutline4.Width     = 1.5;
            pOutlineEqual.Color = SymbolUtil.GetColor(0, 0, 255);
            pOutlineEqual.Width = 1.2;
            pOutlineOther.Color = SymbolUtil.GetColor(0, 255, 255);
            pOutlineOther.Width = 0.8;
            IDictionary <string, ISymbol> symbolDic = new Dictionary <string, ISymbol>();

            symbolDic.Add("一级", pOutline1 as ISymbol);
            symbolDic.Add("二级", pOutline2 as ISymbol);
            symbolDic.Add("三级", pOutline3 as ISymbol);
            symbolDic.Add("四级", pOutline4 as ISymbol);
            symbolDic.Add("等外", pOutlineEqual as ISymbol);
            symbolDic.Add("其他", pOutlineOther as ISymbol);
            return(symbolDic);
        }
        /// <summary>
        /// 显示公路网名字
        /// </summary>
        /// <param name="layer"></param>
        public static void ShowRouteName(ILayer layer)
        {
            IFeatureLayer pFeatureLayer = layer as IFeatureLayer;

            LayerManager.EnableFeatureLayerLabel(pFeatureLayer, "NAME", SymbolUtil.GetColor(50, 50, 0), 10, "");
        }