/// <summary>
/// Gets the tax rate information for ZIP centroid and stores it locally.
/// </summary>
/// <param name="zip">The ZIP code for which you want a ZIP-only tax rate.</param>
/// <param name="path">The path where you stored ZIP-only files.</param>
/// <returns>The tax rate model object for the requested ZIP, if available</returns>
public static TaxRateModel GetLocalTaxRateByZip(string zip, string path)
{
try {
TaxRateModel zipRate = null;
//First see if the ZIP rate file is available in the dictionary.
if (_ratesByZip.ContainsKey(zip))
{
zipRate = _ratesByZip[zip];
}
else if (VerifyLocalZipRateAvailable(zip, path))
{
_ratesByZip.Add(zip, ReadZipRateFile(zip, path));
zipRate = _ratesByZip[zip];
}
return(zipRate);
}
catch (Exception exc) {
throw new AvaTaxOfflineHelperException("An error occurred retrieving local rate content. Please see inner exception for details.", exc);
}
}
/// <summary>Writes the ZIP rate file to the designated location.</summary>
/// <param name="zipRate">The ZIP rate object to store locally.</param>
/// <param name="zip">The ZIP code of the rate object.</param>
/// <param name="path">The path in which to store the file.</param>
private static void WriteZipRateFile(TaxRateModel zipRate, string zip, string path)
{
var content = JsonConvert.SerializeObject(zipRate);
File.WriteAllText(Path.Combine(path, zip + ".json"), content);
}