Source Code WebEditionSample CenterMapBasedOnLatLong CS 100108.zip

TestForm.aspx.cs

using System;  
using System.Configuration;
using ThinkGeo.MapSuite.Core;
using ThinkGeo.MapSuite.WebEdition;
 
namespace GPStoGoogleMap 
{  
    public partial class TestForm : System.Web.UI.Page 
    {  
        protected void Page_Load(object sender, EventArgs e)
        {  
            if (!Page.IsPostBack)  
            {  
                Map1.MapBackground.BackgroundBrush = new GeoSolidBrush(GeoColor.FromHtml("#E5E3DF"));  
                //Sets the projection parameters to go from Geodetic (EPSG 4326) or decimal degrees to Google Map projection (Spherical Mercator).  
                Proj4Projection proj4 = new Proj4Projection();  
                proj4.InternalProjectionParametersString = Proj4Projection.GetEpsgParametersString(4326);//Geodetic (decimal degrees).  
                proj4.ExternalProjectionParametersString = Proj4Projection.GetGoogleMapParametersString();// Google Map projection (Spherical Mercator)  
                //Maximum and minimum longitude and latitude values the map to be centered on. 
                //Here we are centering on Florida. 
                double minx = -88.0656; //Mininum Longitude  
                double miny = 24.6526; //Minimum Latitude  
                double maxx = -79.0724; //Maximum Longitude 
                double maxy = 31.3938; //Maximum Latitude  
                //Gets the RectangleShape in the Google Map projection.  
                proj4.Open();  
                RectangleShape googleMapRectangleShape =  proj4.ConvertToExternalProjection(new RectangleShape(minx, maxy, maxx, miny));  
                proj4.Close();  
                //Sets the extent of the map according to the projected RectangleShape.  
                //Notice that a snap to closest zoom level will occur. The map will be centered based on that RectangleShape  
                //and it will snap to the closest zoom level to fit the RectangleShape.  
                Map1.CurrentExtent = googleMapRectangleShape;  
                Map1.MapUnit = GeographyUnit.Meter;  
                Map1.MapTools.OverlaySwitcher.Enabled = true; 
                Map1.MapTools.MouseCoordinate.Enabled = true;  
                //Adds the Google Map as an overlay  
                GoogleOverlay google = new GoogleOverlay("Google Map");  
                google.JavaScriptLibraryUri = new Uri(ConfigurationManager.AppSettings["GoogleUri"]);  
                google.GoogleMapType = GoogleMapType.Normal;  
                Map1.CustomOverlays.Add(google);  
            } 
        }  
    }  
}

TestForm.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestForm.aspx.cs" Inherits="GPStoGoogleMap.TestForm" %>  
<%@ Register Assembly="WebEdition" Namespace="ThinkGeo.MapSuite.WebEdition" TagPrefix="cc1" %>
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head id="Head1" runat="server">  
    <link href="~/theme/default/samplepic/style.css" rel="stylesheet" type="text/css" />  
    <title>Use Google Map</title> 
</head>  
<body>  
    <form id="form1" runat="server">  
    <asp:ScriptManager ID="ScriptManager1" runat="server">  
    </asp:ScriptManager>  
    <cc1:Map ID="Map1" runat="server" Height="100%" Width="100%">  
    </cc1:Map>  
    <%-- <description:descriptionpanel ID="DescPanel" runat="server">  This sample displays a google map. Click buttons below to switch between different Google maps.  
    <br />  
    <br />  
    <asp:Button CssClass="btn" ID="btnRoad" runat="server" Text="Normal" OnClientClick="Map1.SetCurrentBackgroundMapType(G_NORMAL_MAP); return false;" />  
    <asp:Button CssClass="btn" ID="btnAerial" runat="server" Text="Hybrid" OnClientClick="Map1.SetCurrentBackgroundMapType(G_HYBRID_MAP); return false;" />
    <br />  
    <asp:Button CssClass="btn" ID="btnSatellite" runat="server" Text="Satellite" OnClientClick="Map1.SetCurrentBackgroundMapType(G_SATELLITE_MAP); return false;" /> 
    <asp:Button CssClass="btn" ID="btnPhysical" runat="server" Text="Physical" OnClientClick="Map1.SetCurrentBackgroundMapType(G_PHYSICAL_MAP); return false;" />  
    </description:descriptionpanel>--%> 
    </form>  
</body>  
</html>

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Source Code WebEditionSample CenterMapBasedOnLatLong CS 100108.zip

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Source Code WebEditionSample CenterMapBasedOnLatLong CS 100108.zip

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