Monday, August 30, 2010

Latitude and Longitude Lookup with jQuery, C#, ASP.NET MVC

This mvc controller action returns a place latitude and longitude based on zipcode and country name,

public ActionResult LookupCoordinates(string Zip, string Country)
    string Lat = "";
    string Lon = "";
    string PostUrl = "" + Zip + "&maxRows=10&country=" + Country;
    WebResponse webResponse = webRequest.GetResponse();
    if (webResponse == null)
    { }
        StreamReader sr = new StreamReader(webResponse.GetResponseStream());
        string Result = sr.ReadToEnd().Trim();
        if (Result != "")
            // Load the response into an XML doc
            XmlDocument xdoc = new XmlDocument();
            //  Navigate to latitude node
            XmlNodeList name = xdoc.GetElementsByTagName("lat");
            if (name.Count > 0)
                Lat = name[0].InnerText;
            //  Navigate to longitude node
            name = xdoc.GetElementsByTagName("lng");
            if (name.Count > 0)
                 Lon = name[0].InnerText;
    return Json(Lat + "," + Lon);

and the jquery function for implementing this would be,
function LookupCoordinates(zip) {
        { Zip: zip, Country: "US" },
        function(data) {
            var result = eval('(' + data + ')');
            var coordinates = result.split(",");

Change contry to IN for india... 


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