// Uses the Google API to resolve a post code (within the specified country)
public static Coords?PostCodeToLongLat(string postcode, bool isUseApi)
{
if (isUseApi)
{
// Download the XML response from Google
var client = new WebClient();
var encodedPostCode = HttpUtility.UrlEncode(postcode);
var url = string.Format("https://maps.googleapis.com/maps/api/geocode/json?country=US&&address=" + encodedPostCode);
var JsonString = client.DownloadString(url);
RootObject _ResObject = JsonConvert.DeserializeObject <RootObject>(JsonString);
double coordslong;
double coordslatt;
if (_ResObject.status.ToUpper() == "OK")
{
//add zip code details in cache database
coordslong = _ResObject.results[0].geometry.location.lng;
coordslatt = _ResObject.results[0].geometry.location.lat;
zipcodes _codeDetails = new zipcodes().GetZipcodeDetails(postcode);
decimal[] locs = new decimal[] { Convert.ToDecimal(coordslong), Convert.ToDecimal(coordslatt) };
new zipcodes().AddZipCodes(_ResObject.results[0].formatted_address, postcode, locs, 0, _ResObject.results[0].address_components[1].long_name);
return(new Coords
{
Longitude = coordslong,
Latitude = coordslatt
});
}
else
{
return(null);
}
}
else
{
zipcodes _codeDetails = new zipcodes().GetZipcodeDetails(postcode);
if (_codeDetails != null)
{
double _lag = Convert.ToDouble(_codeDetails.loc[0]);
double _latt = Convert.ToDouble(_codeDetails.loc[1]);
return(new Coords
{
Longitude = _lag,
Latitude = _latt
});
}
else
{
return(null);
}
}
}
public static string GetAddressFromZipCode(string postcode)
{
try
{
zipcodes _zipCodeDetails = new zipcodes().GetZipcodeDetails(postcode);
if (_zipCodeDetails != null)
{
return(_zipCodeDetails.city);
}
else
{
var client = new WebClient();
var encodedPostCode = HttpUtility.UrlEncode(postcode);
var url = string.Format("https://maps.googleapis.com/maps/api/geocode/json?country=US&&address=" + encodedPostCode);
var JsonString = client.DownloadString(url);
RootObject _ResObject = JsonConvert.DeserializeObject <RootObject>(JsonString);
double coordslong;
double coordslatt;
if (_ResObject.status.ToUpper() == "OK")
{
//add zip code details in cache database
coordslong = _ResObject.results[0].geometry.location.lng;
coordslatt = _ResObject.results[0].geometry.location.lat;
zipcodes _codeDetails = new zipcodes().GetZipcodeDetails(postcode);
decimal[] locs = new decimal[] { Convert.ToDecimal(coordslong), Convert.ToDecimal(coordslatt) };
new zipcodes().AddZipCodes(_ResObject.results[0].formatted_address, postcode, locs, 0, _ResObject.results[0].address_components[3].long_name);
return(_ResObject.results[0].formatted_address);
}
else
{
return("");
}
}
}
catch (Exception)
{
return("");
}
}
// Will return a null if the Google API is unable to find either post code, or the country constraint fails
public static double?BetweenTwoPostCodes(string postcodeA, string postcodeB, Units units)
{
bool IsCodeAApi = true;
bool IsCodeBApi = true;
zipcodes _codeADetails = new zipcodes().GetZipcodeDetails(postcodeA);
zipcodes _codeBDetails = new zipcodes().GetZipcodeDetails(postcodeB);
if (_codeADetails != null)
{
if (_codeADetails.loc != null)
{
IsCodeAApi = false;
}
}
if (_codeBDetails != null)
{
if (_codeBDetails.loc != null)
{
IsCodeBApi = false;
}
}
var ll1 = PostCodeToLongLat(postcodeA, IsCodeAApi);
if (!ll1.HasValue)
{
return(null);
}
var ll2 = PostCodeToLongLat(postcodeB, IsCodeBApi);
if (!ll2.HasValue)
{
return(null);
}
return(ll1.Value.DistanceTo(ll2.Value, units));
}
