bing mapを使い、住所から緯度経度を取得する、サンプルC#ソース


string str住所 = "東京都新宿区西新宿2-8-1";
double f緯度 = 0;
double f経度 = 0;
C01MAP.Get緯度経度(str住所, ref f緯度, ref f経度);


public static void Get緯度経度(string strAdress, ref double dblLatitude, ref double dblLongitude)
{
    string BingMapsKey = "INSERT_YOUR_BING_MAPS_KEY";
    string strURL = string.Format("http://dev.virtualearth.net/REST/v1/Locations?query={0}&key={1}&c=ja-jp&o=xml", strAdress, BingMapsKey);
    XmlDocument geocodeResponse = GetXmlResponse(strURL);

    XmlNamespaceManager nsmgr = new XmlNamespaceManager(geocodeResponse.NameTable);
    nsmgr.AddNamespace("rest", "http://schemas.microsoft.com/search/local/ws/rest/v1");
    XmlNodeList locationElements = geocodeResponse.SelectNodes("//rest:Location", nsmgr);
    string latitude = null;
    string longitude = null;
    if (locationElements.Count == 0)
    {
        latitude = "0";
        longitude = "0";
    }
    else
    {
        XmlNodeList displayGeocodePoints = locationElements[0].SelectNodes(".//rest:GeocodePoint/rest:UsageType[.='None']/parent::node()", nsmgr);
        latitude = displayGeocodePoints[0].SelectSingleNode(".//rest:Latitude", nsmgr).InnerText;
        longitude = displayGeocodePoints[0].SelectSingleNode(".//rest:Longitude", nsmgr).InnerText;
    }

    dblLatitude = Convert.ToDouble(latitude);
    dblLongitude = Convert.ToDouble(longitude);
}

private static XmlDocument GetXmlResponse(string requestUrl)
{
    Trace.WriteLine("Request URL (XML): " + requestUrl);
    HttpWebRequest request = WebRequest.Create(requestUrl) as HttpWebRequest;

    using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
    {
        if (response.StatusCode != HttpStatusCode.OK)
            throw new Exception(String.Format("Server error (HTTP {0}: {1}).", response.StatusCode, response.StatusDescription));

        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(response.GetResponseStream());

        return xmlDoc;
    }
}

string str住所 = "東京都新宿区西新宿2-8-1";

double f緯度 = 0;

double f経度 = 0;

C01MAP.Get緯度経度(str住所, ref f緯度, ref f経度);

public static void Get緯度経度(string strAdress, ref double dblLatitude, ref double dblLongitude)

{

string BingMapsKey = "INSERT_YOUR_BING_MAPS_KEY";

string strURL = string.Format("http://dev.virtualearth.net/REST/v1/Locations?query={0}&key={1}&c=ja-jp&o=xml", strAdress, BingMapsKey);

XmlDocument geocodeResponse = GetXmlResponse(strURL);

XmlNamespaceManager nsmgr = new XmlNamespaceManager(geocodeResponse.NameTable);

nsmgr.AddNamespace("rest", "http://schemas.microsoft.com/search/local/ws/rest/v1");

XmlNodeList locationElements = geocodeResponse.SelectNodes("//rest:Location", nsmgr);

string latitude = null;

string longitude = null;

if (locationElements.Count == 0)

{

latitude = "0";

longitude = "0";

}

else

{

XmlNodeList displayGeocodePoints = locationElements[0].SelectNodes(".//rest:GeocodePoint/rest:UsageType[.='None']/parent::node()", nsmgr);

latitude = displayGeocodePoints[0].SelectSingleNode(".//rest:Latitude", nsmgr).InnerText;

longitude = displayGeocodePoints[0].SelectSingleNode(".//rest:Longitude", nsmgr).InnerText;

}

dblLatitude = Convert.ToDouble(latitude);

dblLongitude = Convert.ToDouble(longitude);

}

private static XmlDocument GetXmlResponse(string requestUrl)

{

Trace.WriteLine("Request URL (XML): " + requestUrl);

HttpWebRequest request = WebRequest.Create(requestUrl) as HttpWebRequest;

using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)

{

if (response.StatusCode != HttpStatusCode.OK)

throw new Exception(String.Format("Server error (HTTP {0}: {1}).", response.StatusCode, response.StatusDescription));

XmlDocument xmlDoc = new XmlDocument();

xmlDoc.Load(response.GetResponseStream());

return xmlDoc;

}