GeoIpLocation - 如何獲得州和縣？ （或者，如何從郵政編碼獲得州和縣）C＃

Question

我正在使用一種方法從IP地址獲取IipLocation對象。這是返回的Location對象的代碼：

public IIpLocation GetIpLocation(IPAddress ipAddress) 
{ 
    ipAddress.CheckNull("ipAddress"); 

    IIpLocation ipLocation = null; 
    try 
    { 
     //Try to look up the location using MaxMind. 
     Location location = GetMaxMindIpLocation(ipAddress); 

     //If the postal code is not present, then try to look it up with GeoNames. 
     if (location != null && (location.PostalCode == null || location.PostalCode.Equals(""))) 
     { 
      location.PostalCode = GetPostalCodeFromGeoNames(location); 
     } 

     if (location != null) 
     { 
      ipLocation = new GeoIpLocation(location); 
     } 
    } 
    catch (NullReferenceException) 
    { 
     Log.ErrorFormat(Resources.log_maxMindLookupFailed, ipAddress); 
    } 

    return ipLocation; 
} 

的IipLocation對象具有以下屬性：Region，RegionName，CountryCode，City，Postal Code，Latitude，Longitude。但是，我需要州和縣。我如何從我擁有的信息中獲得州和郡？

Answer 1

使用Census Block Conversions API完成此操作。

例如：

http://data.fcc.gov/api/block/find?format=json&latitude=28.35975&longitude=-81.421988&showall=true