Friday, November 20, 2009

How to use Google Map in ASP.NET

The Javascript:


<head runat="server">

<title>Google map Page</title>
<script src="http://maps.google.com/maps?file=api&amp;v=2&amp;sensor=false&amp;key=ABQIAAAA6TS6WR4jbbUjikFVO_rihBSsoQeukxbo2NPugNeooGWFf_yQhRSk4JGGBtb5COzcswcwgPpu5XJo3Q"

type="text/javascript"></script>
<script type="text/javascript">

var map=null;

var Head = 'style="color:White;background-color:#339900;font-family:Verdana;font-size:11px;font-weight:bold;"';

var Data = 'style="background-color:#ffff99;font-family:Verdana;font-size:11px;overflow:auto; "';

var gmarkers = [];

var ghtml = [];

var m = 0;



function load()

{

if (GBrowserIsCompatible())

{

var LatitudePoint='<%= LatitudePoint %>';

var LongitudePoint='<%= LongitudePoint %>';

var RestaurantName='<%= RestaurantName%>';

var RestaurantAddress='<%=RestaurantAddress%>';



var map = new GMap(document.getElementById("map"));

var point = new GPoint(LatitudePoint,LongitudePoint);

map.addControl(new GLargeMapControl());

map.setCenter(new GLatLng(LatitudePoint,LongitudePoint), 5 );



function createMarker(point,Html)

{

var marker = new GMarker(point);



GEvent.addListener(marker, "click", function()

{

//marker.openInfoWindowHtml('<div class="infodescription">'+Html+'</div>');

marker.openInfoWindowHtml(Html);

});

return marker;

}

var request = GXmlHttp.create();

request.open("GET", "parks.xml", true);

request.onreadystatechange = function()

{

if (request.readyState == 4)

{

var xmlDoc = request.responseXML;

var points = xmlDoc.documentElement.getElementsByTagName("park");

for (var i = 0; i < points.length; i++)

{

var point = new GPoint(LongitudePoint,
LatitudePoint);

var cHtml = '<table cellspacing=0 cellpading=0 border=1>' +
'<tr>' +
'<td align="center">' + RestaurantName + '</td>' +
'</tr>'+
'<tr>' +
'<td>' + RestaurantAddress + '</td>' +
'</tr>' +
'</table>';


var marker = createMarker(point,cHtml);

map.addOverlay(marker);

marker.openInfoWindowHtml(cHtml);

}
}
}
request.send(null);

}
}
</script>
</head>

<body onload="load()">

<form id="form1" runat="server">

<div>

<div id="map" style="width: 700px; height: 590px;">

</div>
</div>
</form>
</body>


The XML File: (parks.xml)


<parks>

<park FullName="Test" address="8,GN Road" lng="80.2385401725769" lat="13.048898223457536"/>

<park FullName="Birds Fort Trail Park" address="575 North Usman Road" lng="80.2496401725769" lat="13.059898223457536"/>

</parks>


Asp.Net C# Coding:


public string LatitudePoint = "12.916051";

public string LongitudePoint = "80.024414";

public string RestaurantName = "Rangish";

public string RestaurantAddress = "";

public string strRestaurantID = string.Empty;

protected void Page_Load(object sender, EventArgs e)

{



LatitudePoint = "70.5896";

LongitudePoint = "80.2568";

RestaurantName = "Test Name";

RestaurantAddress = "Dharapuram";

}

}