WinFrom与百度地图完美交互

如何在WinFrom上显示百度地图，也许这个很多人会说这个很容易，但是如何实现WinFrom与百度地图的完美交互，如果在Winfrom的控制输入经纬度，准确定位出在百度地图上，并且还能显示出具体的地址出来。再比如输入多个经纬度定位出所有点的具体定位等等，这都是需要进行一番好好研究。

百度地图API地址：http://lbsyun.baidu.com/jsdemo.htm#indoor0_0

开发之前多看看相关的API就会节省大量的时间，磨刀不误砍柴工。

主要实现功能

• 单点定位
• 多点定位
• 匹配路径

单点定位

winfrom传参到百度地图

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                string lon = textBox1.Text.Trim();
                string lat = textBox2.Text.Trim();

                string url = string.Format(Application.StartupPath + "/getVehiclePoint.html?lng={0}&lat={1}&type=1", lon, lat);
                webBrowser1.Navigate(url);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "异常", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

百度地图如何来接收这部分参数

    function getQueryString(name) {
        var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
        var r = window.location.search.substr(1).match(reg);
        if (r != null) return unescape(r[2]); return null;
    }
    var lng = decodeURI(getQueryString("lng"));
    var lat = decodeURI(getQueryString("lat"));
    var type = decodeURI(getQueryString("type"));
    var str=decodeURI(getQueryString("str"));　

创建地图

var map = new BMapGL.Map('container'); // 创建Map实例
map.centerAndZoom(new BMapGL.Point(116.404, 39.915), 12); // 初始化地图,设置中心点坐标和地图级别
map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放　　

多点定位

多点定位传参

private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                string str1 = textBox3.Text.Trim() + "," + textBox4.Text.Trim();
                string str2 = textBox5.Text.Trim() + "," + textBox6.Text.Trim();
                string str3 = textBox7.Text.Trim() + "," + textBox8.Text.Trim();
                string str4 = textBox9.Text.Trim() + "," + textBox10.Text.Trim();
                string str5 = textBox11.Text.Trim() + "," + textBox12.Text.Trim();
                string str = str1 + ";" + str2 + ";" + str3 + ";" + str4 + ";" + str5;

                string url = string.Format(Application.StartupPath + "/getVehiclePoint.html?lng={0}&lat={1}&type=2&str={2}", 0, 0, str);
                webBrowser1.Navigate(url);

                //webBrowser1.ObjectForScripting = this;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "异常", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

根据经纬度定位出具体的地址并且创建弹框显示地址

   function setMarker(point) {
        var gc = new BMap.Geocoder();
        gc.getLocation(point, function (rs) {
            var addComp = rs.addressComponents;
            var address = addComp.province + addComp.city + addComp.district + addComp.street + addComp.streetNumber;

            //将标注添加到地图中
            var marker = new BMap.Marker(point);  // 创建标注
            map.addOverlay(marker);

            var opts = {
                width: 200,     // 信息窗口宽度
                height: 100,     // 信息窗口高度
                title: "地址信息"  // 信息窗口标题
            }
            var infoWindow = new BMap.InfoWindow(address, opts);  // 创建信息窗口对象
            marker.addEventListener("click", function () {
                map.openInfoWindow(infoWindow, point); //开启信息窗口
            });
        });
    }　

添加地图控件

    //地图控件添加函数：
    function addMapControl() {
        //向地图中添加缩放控件
        var ctrl_nav = new BMap.NavigationControl({ anchor: BMAP_ANCHOR_TOP_LEFT, type: BMAP_NAVIGATION_CONTROL_LARGE });
        map.addControl(ctrl_nav);
        ////向地图中添加缩略图控件
        //var ctrl_ove = new BMap.OverviewMapControl({ anchor: BMAP_ANCHOR_BOTTOM_RIGHT, isOpen: 1 });
        //map.addControl(ctrl_ove);
        //向地图中添加比例尺控件
        var ctrl_sca = new BMap.ScaleControl({ anchor: BMAP_ANCHOR_BOTTOM_LEFT });
        map.addControl(ctrl_sca);

        //实时显示地图坐标 strat
        map.addEventListener("mousemove", GetlngAndlat);
    }

匹配路径

鼠标移动实时显示具体的经纬度和具体地址

function GetlngAndlat(e) {
        if (e.point.lng != null) {
            document.getElementById("mouselng").value = e.point.lng;
            document.getElementById("mouselat").value = e.point.lat;

              var gc = new BMap.Geocoder();
                 gc.getLocation(e.point, function (rs) {
                      var addComp = rs.addressComponents;
　　　　              var address = addComp.province + addComp.city + addComp.district + addComp.street + addComp.streetNumber;
                      document.getElementById("address").value = address;
            });
        }
      }

　　

     //实时显示地图坐标 strat
        map.addEventListener("mousemove", GetlngAndlat);　

计算两点的路线和行车时间和里程

    var map = new BMapGL.Map("container");
        map.centerAndZoom(new BMapGL.Point(116.404, 39.915), 11);

        var p1 = new BMapGL.Point(116.301934,39.977552);
        var p2 = new BMapGL.Point(116.508328,39.919141);

        var driving = new BMapGL.DrivingRoute(map, {renderOptions:{map: map, autoViewport: true}});
        driving.search(p1, p2);

    var map = new BMapGL.Map("container");
        map.centerAndZoom(new BMapGL.Point(116.404, 39.915), 11);

        var p1 = new BMapGL.Point(116.301934,39.977552);
        var p2 = new BMapGL.Point(116.508328,39.919141);

        var driving = new BMapGL.DrivingRoute(map, {renderOptions:{map: map, autoViewport: true}});
        driving.search(p1, p2);

定时任务时间接收定位和具体的地址信息

        private void timer1_Tick(object sender, EventArgs e)
        {
            try
            {
                if (webBrowser1.Document != null)
                {
                    string tag_lng = webBrowser1.Document.GetElementById("mouselng").GetAttribute("value");  //获取经纬度
                    string tag_lat = webBrowser1.Document.GetElementById("mouselat").GetAttribute("value");
                    string address = webBrowser1.Document.GetElementById("address").GetAttribute("value");
                    double dou_lng, dou_lat;
                    if (double.TryParse(tag_lng, out dou_lng) && double.TryParse(tag_lat, out dou_lat)) //字符串转double数据
                    {
                        this.label9.Text = "当前坐标：[" + dou_lng.ToString("F5") + "," + dou_lat.ToString("F5") + "],当前地址：" + address;
                    }
                }
            }
            catch (Exception ee)
            {
                //MessageBox.Show(ee.Message+"1");
            }
        }