SuperMap.Web.Mapping.HighlightLayer.GetImageUrl C# (CSharp) Method

        protected override string GetImageUrl()
        {
            Rectangle2D bounds = ViewBounds;

            int width = (int)Math.Round(ViewSize.Width);
            int height = (int)Math.Round(ViewSize.Height);

            StringBuilder imgUrl = new StringBuilder();
            imgUrl.Append(Url);
            if (!Url.EndsWith("/"))
            {
                imgUrl.Append("/");
            }

            imgUrl.AppendFormat("highlightImage.{0}?", ImageFormat);
            imgUrl.AppendFormat("viewBounds={0}", JsonHelper.FromRectangle2D(bounds));

            imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&width={0}", width);
            imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&height={0}", height);

            if (Transparent)
            {
                imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&transparent={0}", Transparent);
            }
            if (ClipRegion != null)
            {
                imgUrl.Append("&clipRegionEnabled=True&");
                imgUrl.AppendFormat("clipRegion={0}" , ServerGeometry.ToJson(ClipRegion.ToServerGeometry()));
            }
            //这两个属性是互斥的!!!这个控制以QueryResultID为标准；
            if (QueryResultID != null)
            {
                imgUrl.AppendFormat("&queryResultID={0}", QueryResultID);
            }
            else //if (HighlightTargetSetID != null)
            {
                imgUrl.AppendFormat("&highlightTargetSetID={0}", HighlightTargetSetID);
            }

            if (MaxVisibleVertex != int.MaxValue && MaxVisibleVertex >= 0)
            {
                imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&maxVisibleVertex={0}", MaxVisibleVertex);
            }

            if (Style != null)
            {
                imgUrl.AppendFormat("&style={0}", ServerStyle.ToJson(Style));
            }
            if (!Redirect)
            {
                imgUrl.AppendFormat("&redirect={0}", Redirect.ToString(System.Globalization.CultureInfo.InvariantCulture).ToLower());
            }

            return imgUrl.ToString();
        }