public void Initialize()
{
string url = String.Format("{0}/common.ashx?method=GetMapStatus&map={1}", this.mapServiceUrl, this.mapName);
WebClient wc = new WebClient();
wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(wc_DownloadStringCompleted);
wc.DownloadStringAsync(new Uri(url, UriKind.Absolute), this);
}