/// <summary>
/// Returns the distance between 2 points using the specified transport mode.
/// </summary>
/// <param name="pointA">
/// The first point
/// </param>
/// <param name="pointB">
/// The second point
/// </param>
/// <param name="transportMode">
/// Specified the mode of transport used between points.
/// </param>
/// <returns>
/// The distance between pointA and pointB
/// </returns>
public Arc GetDistance(Location pointA, Location pointB, TransportMode transportMode)
{
// Set parameters
this.Parameters["mode"] = transportMode.ToString().ToLower();
this.Parameters["origins"] = pointA.ToString();
this.Parameters["destinations"] = pointB.ToString();
// Make XML request
XmlDocument doc = this.Request();
if (doc["DistanceMatrixResponse"] == null)
{
throw new Exception("XML response is invalid.");
}
XmlNode response = doc["DistanceMatrixResponse"];
// Check for null references
if (response == null || response["status"] == null)
{
throw new Exception("XML response is invalid.");
}
// Check request status
if (response["status"].InnerText != "OK")
{
throw new GoogleApiException(response["status"].InnerText);
}
// Check for null references
if (response["row"] == null || response["row"]["element"] == null)
{
throw new Exception("XML response is invalid.");
}
// Extract element
XmlNode element = response["row"]["element"];
// Check for null references
if (element["duration"]["value"] == null || element["distance"]["value"] == null)
{
throw new Exception("XML response is invalid.");
}
// Get results
var duration = new TimeSpan(0, 0, Convert.ToInt32(element["duration"]["value"].InnerText));
double distance = Convert.ToDouble(element["distance"]["value"].InnerText);
// Return new object
return new Arc(
pointA,
pointB,
new TransportTimeSpan { TravelTime = duration, WaitingTime = default(TimeSpan) },
distance,
default(DateTime),
transportMode.ToString());
}
/// <summary>
/// Gets a human readable address that is closest to the provided location.
/// </summary>
/// <param name="location">
/// A location for which you want to find the nearest address
/// </param>
/// <returns>
/// A string representing a human readable address corresponding to that location.
/// </returns>
public string GetLocationString(Location location)
{
this.Parameters.Remove("address");
// Set new request data
this.Parameters["latlng"] = location.ToString();
// Perform XML request
XmlDocument doc = this.Request();
if (doc["GeocodeResponse"] == null || doc["GeocodeResponse"]["status"] == null)
{
throw new Exception("XML response is invalid.");
}
// Check request status
if (doc["GeocodeResponse"]["status"].InnerText != "OK")
{
throw new Exception("Error processing XML request");
}
// Get the useful node
XmlNode locationNode = doc["GeocodeResponse"]["result"]["formatted_address"];
// Return the new location string
return locationNode.InnerText;
}