/*
* // https://developers.google.com/maps/documentation/javascript/directions
* OK indicates the response contains a valid DirectionsResult.
* NOT_FOUND indicates at least one of the locations specified in the request's origin, destination, or waypoints could not be geocoded.
* ZERO_RESULTS indicates no route could be found between the origin and destination.
* MAX_WAYPOINTS_EXCEEDED indicates that too many DirectionsWaypoint fields were provided in the DirectionsRequest. See the section below on limits for way points.
* MAX_ROUTE_LENGTH_EXCEEDED indicates the requested route is too long and cannot be processed. This error occurs when more complex directions are returned. Try reducing the number of waypoints, turns, or instructions.
* INVALID_REQUEST indicates that the provided DirectionsRequest was invalid. The most common causes of this error code are requests that are missing either an origin or destination, or a transit request that includes waypoints.
* OVER_QUERY_LIMIT indicates the webpage has sent too many requests within the allowed time period.
* OVER_DAILY_LIMIT: The webpage has gone over the daily limit of its request quota.
* REQUEST_DENIED indicates the webpage is not allowed to use the directions service.
* UNKNOWN_ERROR indicates a directions request could not be processed due to a server error. The request may succeed if you try again.
*
* ERROR: There was a problem contacting the Google servers.
*/
public static GoogleDirectionsReturnValue FromJson(string json)
{
GoogleDirectionsReturnValue retValue = Newtonsoft.Json.JsonConvert.DeserializeObject <GoogleDirectionsReturnValue>(json, Converter.Settings);
if (!"OK".Equals(retValue.status, System.StringComparison.OrdinalIgnoreCase))
{
throw new GoogleDirectionsException(retValue);
}
return(retValue);
}
public static GoogleDirectionsReturnValue GetDirections(DirectionsUrlBuilder urlBuilder)
{
GoogleDirectionsReturnValue retVal = null;
string url = urlBuilder.ToString();
using (System.Net.WebClient wc = new System.Net.WebClient())
{
string result = wc.DownloadString(url);
retVal = GoogleDirectionsReturnValue.FromJson(result);
}
return(retVal);
}
public GoogleDirectionsException(GoogleDirectionsReturnValue api_result)
: this(api_result.status + ": " + api_result.error_message)
{
}