demo.aspx.cs

使用ASP.NET 2.0 (c#) 实现的gis 的地图系统

            }
        }

        /// <summary>
        /// 把地图名显示在下拉框中，当前地图为默认选中项
        /// </summary>
        /// <param name="list">要显示地图名的下拉框</param>
        private void FillMapList(DropDownList list)
        {
            FillMapList(list, false);
        }

        #endregion

        #region 显示图层列表
        /// <summary>
        /// 把地图图层显示在下拉框中
        /// </summary>
        /// <param name="list">要显示图层名的下拉框</param>
        private void FillLayerList(DropDownList list)
        {
            FillLayerList(list, null);
        }

        private void FillLayerList(DropDownList list, LayerType[] layerTypes)
        {
            Layer[] layers = this.MapControl1.Layers;
            if (layers == null || layers.Length < 1)
            {
                return;
            }

            list.Items.Clear();
            string layerName;
            string layerCaption;
            int listIndex = 0;
            int c = 0;
            if (layerTypes != null)
            {
                c = layerTypes.Length;
            }
            for (int i = 0; i < layers.Length; i++)
            {
                bool flag = false;
                if (layerTypes == null)
                {
                    flag = true;
                }
                else
                {
                    for (int j = 0; j < c; j++)
                    {
                        if (layers[i].LayerType == layerTypes[j])
                        {
                            flag = true;
                            break;
                        }
                    }
                }

                if (flag)
                {
                    layerName = layers[i].Name;
                    layerCaption = layers[i].Caption;
                    layerCaption = layerCaption.Split('@')[0];
                    list.Items.Add(layerCaption);
                    list.Items[listIndex].Value = layerName;
                    listIndex++;
                }
            }

        }
        #endregion

        #region 地图查询前的事件
        /// <summary>
        /// 地图查询前的事件。修改查询参数。
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void MapControl1_Querying(object sender, SuperMap.IS.WebControls.EventArguments.QueryingEventArgs e)
        {
            // 设置期望返回的记录数，以避免一次返回太多结果。
            e.Params.ExpectCount = 10;
            // 高亮查询区域。
            e.Params.Highlight.HighlightQueryArea = true;
            e.Params.Highlight.QueryAreaStyle = new SuperMap.IS.Utility.Style();
            e.Params.Highlight.QueryAreaStyle.PenColor = Convertor.SystemColorToIntegerColor(Color.Blue);
            e.Params.Highlight.QueryAreaStyle.BrushColor = Convertor.SystemColorToIntegerColor(Color.Blue);
            e.Params.Highlight.QueryAreaStyle.BrushBackTransparent = true;
            e.Params.Highlight.QueryAreaStyle.BrushStyle = 2;
        }
        #endregion

        #region 公交分析
        /// <summary>
        /// 公交方案查询
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnFindBus_Click(object sender, System.EventArgs e)
        {
            SetBusToolboxActive();
            string strBusStart = this.txtBusStart.Text;
            string strBusEnd = this.txtBusEnd.Text;
            int transferTimes;
            int.TryParse(this.lstChangeTimes.SelectedValue, out transferTimes);
            bool bMost = this.checkBoxMostChange.Checked ? true : false;

            BusSolutionItem solution = this.MapControl1.SpatialAnalystOperator.GetBusSolution(strBusStart, strBusEnd, transferTimes, bMost, 10);

            if (solution != null && solution.RoutingItems != null && solution.RoutingItems.Length > 0)
            {
                // 得到最终方案，直接显示。
                ShowBusSolutionResult(solution);
                return;
            }
            else
            {
                // 没有得到最终方案，可能：起点站、终点站不唯一，需要二次查询；没有匹配的方案。
                this.treeBusResult.Nodes.Clear();
                this.treeBusResult.Visible = false;
                if (solution != null && solution.StartStops != null && solution.EndStops != null)
                {
                    // 起点站、终点站不唯一，需要二次查询。
                    BusStopItem[] busStartStops = solution.StartStops;
                    BusStopItem[] busEndStops = solution.EndStops;
                    this.lstBusStarts.Items.Clear();
                    for (int i = 0; i < busStartStops.Length; i++)
                    {
                        ListItem curItem = new ListItem();
                        curItem.Text = busStartStops[i].Name + "(ID=" + busStartStops[i].ID + ")";
                        curItem.Value = busStartStops[i].InterChangeID.ToString(NumberFormatInfo.InvariantInfo);
                        this.lstBusStarts.Items.Add(curItem);
                    }
                    this.lstBusEnds.Items.Clear();
                    for (int i = 0; i < busEndStops.Length; i++)
                    {
                        ListItem curItem = new ListItem();
                        curItem.Text = busEndStops[i].Name + "(ID=" + busEndStops[i].ID + ")"; ;
                        curItem.Value = busEndStops[i].InterChangeID.ToString(NumberFormatInfo.InvariantInfo);
                        this.lstBusEnds.Items.Add(curItem);
                    }
                    this.PanelBusSearch.Visible = false;
                    this.panelBusStops.Visible = true;
                }
                else
                {
                    // 没有匹配的方案。
                    ShowBusSolutionResultNothing();
                }
            }
        }

        /// <summary>
        /// 呈现公交方案结果
        /// </summary>
        /// <param name="solution"></param>
        private void ShowBusSolutionResult(BusSolutionItem solution)
        {
            this.BusSolutionRef = solution;
            this.TreeShowType = "Solution";

            this.PanelBusResult.Visible = true;
            //			this.treeBusResult.Visible = true;
            this.btnBusResultCancel.Visible = true;

            // 隐藏查询面板。
            this.PanelBusSearch.Visible = false;

            //			this.treeBusResult.Nodes.Clear();

            this.lblBusResult.Text = string.Empty;
            this.lblBusResult.Visible = true;

            if (solution != null && solution.RoutingItems != null)
            {
                System.Text.StringBuilder sb = new StringBuilder();

                int routingCount = solution.RoutingItems.Length;
                BusRoutingItem curItem;
                sb.Append("<br>共搜索到 " + routingCount + " 种换乘方案：");
                for (int i = 0; i < routingCount; i++)
                {

                    //					Microsoft.Web.UI.WebControls.TreeNode solutionNode = new Microsoft.Web.UI.WebControls.TreeNode();
                    //					solutionNode.Text = "方案" + Convert.ToString(i+1);

                    sb.Append("<br> " + GetHrefSolution(i) + ": ");

                    curItem = solution.RoutingItems[i];
                    string upStop;
                    string busline;
                    string downStop;
                    string upStopSmID;
                    string buslineSmID;
                    string downStopSmID;
                    MapCoord upStopLocation;
                    MapCoord downStopLocation;

                    for (int j = 0; j < curItem.UpStops.Length; j++)
                    {
                        upStop = curItem.UpStops[j].Name;
                        busline = curItem.BusLines[j].Name;
                        downStop = curItem.DownStops[j].Name;
                        upStopSmID = curItem.UpStops[j].ID.ToString();
                        buslineSmID = curItem.BusLines[j].SmID.ToString();
                        downStopSmID = curItem.DownStops[j].ID.ToString();
                        upStopLocation = curItem.UpStops[j].Location;
                        downStopLocation = curItem.DownStops[j].Location;

                        sb.Append("从 " + GetHrefStop(upStopSmID, upStop, i, upStopLocation) + " 站上车，乘坐 " + busline + " 汽车，在 " + GetHrefStop(downStopSmID, downStop, i, downStopLocation) + " 站下车； <br>");

                        /*
                        Microsoft.Web.UI.WebControls.TreeNode buslineNode = new Microsoft.Web.UI.WebControls.TreeNode();
                        buslineNode.Text = busline;
                        buslineNode.NodeData = buslineSmID;
                        Microsoft.Web.UI.WebControls.TreeNode upstopNode = new Microsoft.Web.UI.WebControls.TreeNode();
                        upstopNode.Text = upStop;
                        upstopNode.NodeData = upStopSmID;
                        Microsoft.Web.UI.WebControls.TreeNode downstopNode = new Microsoft.Web.UI.WebControls.TreeNode();
                        downstopNode.Text = downStop;
                        downstopNode.NodeData = downStopSmID;
                        buslineNode.Nodes.Add(upstopNode);
                        buslineNode.Nodes.Add(downstopNode);
                        solutionNode.Nodes.Add(buslineNode);
                        */
                    }

                    //					this.treeBusResult.Nodes.Add(solutionNode);
                }

                this.lblBusResult.Text += sb.ToString();
            }
        }


        /// <summary>
        /// 清除公交方案结果树
        /// </summary>
        private void ShowBusSolutionResultNothing()
        {
            this.treeBusResult.Nodes.Clear();
            this.treeBusResult.Visible = false;

            this.lblBusResult.Text = string.Empty;


            // 显示查询面板。
            this.PanelBusSearch.Visible = true;

            // 弹出提示对话框。
            this.ShowAlertDialog("ShowBusSolutionResultNothing", "没有查询结果！");
        }

        #endregion

        #region 公交站点查询, 公交线路查询

        /// <summary>
        /// 公交站点查询
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnBusStopQuery_Click(object sender, System.EventArgs e)
        {
            SetBusToolboxActive();
            this.TreeShowType = "BusStop";
            this.treeBusResult.Nodes.Clear();
            this.treeBusResult.Visible = false;
            string fuzzyStopText = this.txtBusStopQuery.Text;
            if (string.IsNullOrEmpty(fuzzyStopText))
            {
                ShowAlertDialog("BusStopQuery", "请输入站点名！");
                return;
            }
            BusStopItem[] busStopItems = this.MapControl1.SpatialAnalystOperator.FindBusStop(fuzzyStopText);
            if (busStopItems == null)
            {
                ShowAlertDialog("BusLineQuery", "没有找到匹配的站点！");
                return;
            }
            this.PanelBusSearch.Visible = false;
            this.PanelBusResult.Visible = true;
            this.treeBusResult.Visible = true;
            this.btnBusResultCancel.Visible = true;
            //			this.lblBusResult.Visible = true;

            int busStopCount = busStopItems.Length;
            //			this.lblBusResult.Text = "<br>您搜索的是 \"" + fuzzyStopText + "\"，共找到 " + busStopCount + " 个匹配的站点：";
            //			System.Text.StringBuilder sb = new StringBuilder();
            string stopName;
            int interChangeID;
            int stopID;
            string stopNodeText;
            BusLineItem[] busLineItems;
            for (int i = 0; i < busStopCount; i++)
            {
                stopName = busStopItems[i].Name;
                interChangeID = busStopItems[i].InterChangeID;
                stopID = busStopItems[i].ID;
                stopNodeText = stopName + "(ID=" + stopID + ")";
                Microsoft.Web.UI.WebControls.TreeNode stopNode = new Microsoft.Web.UI.WebControls.TreeNode();
                stopNode.Text = stopNodeText;
                stopNode.NodeData = stopID.ToString(NumberFormatInfo.InvariantInfo);