public static double CalcDistance(string latLng1, string latLng2, GeoCodeCalcMeasurement m)
{
try
{
double lat1, lng1, lat2, lng2;
string[] latlngArray = latLng1.Split(',');
lat1 = Convert.ToDouble(latlngArray[0]);
lng1 = Convert.ToDouble(latlngArray[1]);
latlngArray = latLng2.Split(',');
lat2 = Convert.ToDouble(latlngArray[0]);
lng2 = Convert.ToDouble(latlngArray[1]);
return(GeoCodeCalc.CalcDistance(lat1, lng1, lat2, lng2, m));
}
catch (Exception ex)
{
return(0);
}
}
public static List <LocationInfo> FindNearby(string latLong, string locationType = null, string nextPageToken = null)
{
List <LocationInfo> responseObj = null;
try
{
string googleGeoCodeEndPoint = ConfigurationManager.AppSettings["GooglePlacesApiEndPoint"];
var requestUri = string.Format("{0}json?location={1}&radius={2}&key={3}", googleGeoCodeEndPoint, Uri.EscapeDataString(latLong), ConfigurationManager.AppSettings["GooglePlacesRadius"], ConfigurationManager.AppSettings["GooglePlacesApiKey"]);
if (string.IsNullOrWhiteSpace(locationType) == false)
{
requestUri = string.Format("{0}&type={1}", requestUri, locationType);
}
if (string.IsNullOrWhiteSpace(nextPageToken) == false)
{
requestUri = string.Format("{0}&pagetoken={1}", requestUri, nextPageToken);
}
using (WebClient wc = new WebClient())
{
wc.Encoding = System.Text.Encoding.UTF8;
wc.Headers["User-Agent"] = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET4.0C; .NET4.0E)";
string responseString = wc.DownloadString(new Uri(requestUri));
var responseJson = JObject.Parse(responseString);
if (responseJson != null)
{
if (responseJson["results"] != null)
{
if (responseObj == null)
{
responseObj = new List <LocationInfo>();
}
foreach (var item in ((JArray)responseJson["results"]))
{
var obj = new LocationInfo((JObject)item);
obj.Distance = GeoCodeCalc.CalcDistance(latLong, obj.Latitute + "," + obj.Longitude, GeoCodeCalcMeasurement.Kilometers);
responseObj.Add(obj);
}
}
if (responseJson["next_page_token"] != null)
{
nextPageToken = responseJson["next_page_token"].ToString();
var nextResults = FindNearby(latLong, locationType, nextPageToken);
if (nextResults != null && nextResults.Count > 0)
{
if (responseObj == null)
{
responseObj = new List <LocationInfo>();
}
responseObj.AddRange(nextResults);
}
}
}
}
}
catch
{
}
return(responseObj);
}
