ArcEngine获取颜色、创建简单线、面的代码

      ArcEngine获取颜色、创建简单线、面的代码（C#）

      // 获取RGB颜色
        public static RgbColor getRgbColor(int r, int g, int b)
        {
            RgbColor pColor = new RgbColorClass();
            pColor.Red = r;
            pColor.Green = g;
            pColor.Blue = b;
            return pColor;
        }


        // 获取简单线符号
        public static  ISymbol getSimpleLineSymbol()
        {
            ISimpleLineSymbol pLineSymbol = new SimpleLineSymbolClass();
            pLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;
            pLineSymbol.Width = 8;
            pLineSymbol.Color = getRgbColor(255, 20, 29);
            ISymbol pSymbol = pLineSymbol as ISymbol;
            pSymbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;
            return pSymbol;
        }

       // 获取简单面填充符号
        public static ISimpleFillSymbol getSimpleFillSymbol(int fillColor, int lineColor)
        {
            ISimpleFillSymbol pFillSymbol = new SimpleFillSymbolClass();
            pFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid;