asp.Net采用Gmap实现google map定位

using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data; using System.Text; using Subgurim.Controles; using System.Web.Security; using Tuff; using System.Drawing; public partial class Action_CarLastLocation : System.Web.UI.Page { SysUser sysUser = null; protected void Page_Init(object sender, EventArgs e) { // 用户登录信息 sysUser = (SysUser)Session["SysUser"]; GMap1.Key = WebPublic.GetGoogleMarAPIKey(); } protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { GMap1.addControl(new GControl(GControl.preBuilt.GOverviewMapControl)); GMap1.addGMapUI(new GMapUI()); GMap1.GZoom = 4; //缩放等级 GMap1.Width = 590; //控件宽度 GMap1.Height = 600; //控件高度 GMap1.setCenter(new GLatLng(33.00, 106.00)); ObjectDataSourceCarData.SelectParameters["SSGSBH"].DefaultValue = sysUser.Corp.ID; ObjectDataSourceCarData.SelectParameters["STIME"].DefaultValue = null; ObjectDataSourceCarData.SelectParameters["ETIME"].DefaultValue = null; ObjectDataSourceCarData.SelectParameters["SN"].DefaultValue = null; ASPxGridViewDeviceList.FocusedRowIndex = -1; } } // 加载Map protected void ASPxGridViewDeviceList_HtmlRowCreated(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewTableRowEventArgs e) { if (e.RowType == DevExpress.Web.ASPxGridView.GridViewRowType.Data) { if (e.VisibleIndex != -1 && e.GetValue("LAT").ToString() != "" && e.GetValue("LON").ToString() != "") { double plat = double.Parse(e.GetValue("LAT").ToString()); //得到经度 if (plat == 0.00) { plat = 33.00; } double plon = double.Parse(e.GetValue("LON").ToString()); //得到纬度 if (plon == 0.00) { plon = 106.00; } string address = e.GetValue("ADDRESS").ToString(); HiddenFieldMQSSDZ.Value = address; string registercity = e.GetValue("CLSSQY").ToString(); //得到注册地址 string[] citylist = registercity.Split('/'); string nowcity = citylist[1]; //注册城市 GMarker marker = new GMarker(new GLatLng(plat, plon)); //创建坐标 GLatLng latlon = new GLatLng(plat, plon); PopupMarkerOptions popupMarkerOptions = new PopupMarkerOptions(Color.White, Color.RoyalBlue); //浮窗样式 PopupMarker popupMarker = new PopupMarker(latlon, "" + e.GetValue("CLCPH") + "", popupMarkerOptions); //定义浮窗 GMap1.Add(popupMarker); //添加到map GMap1.setCenter(new GLatLng(plat, plon)); //设置中心点 } } } protected void ASPxGridViewDeviceList_FocusedRowChanged(object sender, EventArgs e) { if (Page.IsPostBack && ASPxGridViewDeviceList.FocusedRowIndex != -1) { GLatLng glatlng = new GLatLng(); string zbwd = ASPxGridViewDeviceList.GetDataRow(ASPxGridViewDeviceList.FocusedRowIndex)["LAT"].ToString(); string zbjd = ASPxGridViewDeviceList.GetDataRow(ASPxGridViewDeviceList.FocusedRowIndex)["LON"].ToString(); if (zbwd != "") { if (Math.Abs(double.Parse(zbwd)) < 90) { glatlng.lat = double.Parse(zbwd); } } if (zbjd != "") { if (Math.Abs(double.Parse(zbjd)) < 180) { glatlng.lng = double.Parse(zbjd); } } GMap1.setCenter(glatlng, 14); } } //地图点击事件 protected string GMap1_MarkerClick(object s, GAjaxServerEventArgs e) { LabelMQSSDZ.Text = HiddenFieldMQSSDZ.Value; return e.map; } }