protected override void OnDownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
if (e.Error != null) // Did an error occur with the download?
{
this.OnSearchError(e.Error.Message);
return;
}
try
{
XmlDocument document = new XmlDocument();
document.LoadXml(e.Result);
int index = 1;
_results.Clear();
foreach (XmlNode node in document.GetElementsByTagName("place"))
{
SearchResult result = new SearchResult(index++);
result.DisplayName = node.Attributes.GetNamedItem("display_name").InnerText;
result.Latitude = double.Parse(node.Attributes.GetNamedItem("lat").InnerText, CultureInfo.InvariantCulture);
result.Longitude = double.Parse(node.Attributes.GetNamedItem("lon").InnerText, CultureInfo.InvariantCulture);
string[] boundingBox = node.Attributes.GetNamedItem("boundingbox").InnerText.Split(',');
if (boundingBox.Length == 4)
{
double height, width;
if (TryGetSize(boundingBox[0], boundingBox[1], out height) &&
TryGetSize(boundingBox[2], boundingBox[3], out width))
{
//result.Size = new Size(width, height);
}
}
_results.Add(result);
}
this.OnSearchCompleted();
}
catch (NullReferenceException) // One of the calls to GetNamesItem() couldn't find it and returned null
{
this.OnSearchError("XML data is invalid.");
}
catch (XmlException ex) // XmlDocument.LoadXml failed
{
this.OnSearchError(ex.Message);
}
}
protected bool TryParseLatitudeLongitude(string text)
{
string[] tokens = text.Split(new char[] { ',', ' ', '°' }, StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length == 2)
{
double latitude, longitude;
if (double.TryParse(tokens[0], out latitude) && double.TryParse(tokens[1], out longitude))
{
SearchResult result = new SearchResult(1);
result.DisplayName = string.Format(CultureInfo.CurrentUICulture, "{0:f4}°, {1:f4}°", latitude, longitude);
result.Latitude = latitude;
result.Longitude = longitude;
_results.Clear();
_results.Add(result);
this.OnSearchCompleted();
return true;
}
}
return false;
}
private void NavigateTo(SearchResult result)
{
this.resultsArea.IsExpanded = false;
var callback = this.Navigate;
if (callback != null)
{
callback(this, new NavigateEventArgs(result));
}
}
/// <summary>Initializes a new instance of the NavigateEventArgs class.</summary>
/// <param name="result">The SearchResult to navigate to.</param>
internal NavigateEventArgs(SearchResult result)
{
this.Result = result;
}