/// <summary>
/// If an exchange rate provider is configured, this method will attempt to update
/// the exchange rate based from the provider data.
/// </summary>
/// <param name="throwOnError">When false, if an error occurs during the update process
/// the error is logged and ignored. When true, the error is logged and then rethrown
/// for the calling process</param>
public void UpdateExchangeRate(bool throwOnError)
{
try
{
Currency baseCurrency = Token.Instance.Store.BaseCurrency;
if (baseCurrency.CurrencyId == this.CurrencyId)
{
this.ExchangeRate = 1;
}
else
{
//GET THE FOREX PROVIDER
IForexProvider provider = ForexProviderDataSource.GetCurrentProvider();
if (provider != null)
{
this.ExchangeRate = provider.GetExchangeRate(baseCurrency.ISOCode, this.ISOCode);
}
else
{
Logger.Warn("Exchange rate update for " + this.Name + " failed because the rate provider could not be loaded.");
}
}
this.Save();
}
catch
{
if (throwOnError)
{
throw;
}
}
}
public static List <IForexProvider> GetProviders()
{
List <IForexProvider> providers = new List <IForexProvider>();
List <string> providerNames = new List <string>();
foreach (System.Reflection.Assembly assemblyInstance in AppDomain.CurrentDomain.GetAssemblies())
{
try
{
foreach (Type thisType in assemblyInstance.GetTypes())
{
if ((thisType.IsClass && !thisType.IsAbstract))
{
foreach (Type thisInterface in thisType.GetInterfaces())
{
IForexProvider instance = null;
if ((!string.IsNullOrEmpty(thisInterface.FullName) && thisInterface.FullName.Equals("CommerceBuilder.Stores.IForexProvider")))
{
string classId = Utility.Misc.GetClassId(thisType);
string loweredClassId = classId.ToLowerInvariant();
if (!providerNames.Contains(loweredClassId))
{
instance = Activator.CreateInstance(Type.GetType(classId)) as IForexProvider;
if (instance != null)
{
providers.Add(instance);
}
providerNames.Add(loweredClassId);
}
}
}
}
}
}
catch
{
//ignore error
}
}
return(providers);
}
/// <summary>
/// Gets the current ForexProvider
/// </summary>
/// <returns>The current ForexProvider</returns>
public static IForexProvider GetCurrentProvider()
{
IForexProvider instance = null;
Store store = Token.Instance.Store;
if (store != null)
{
string classId = store.Settings.ForexProviderClassId;
if (!string.IsNullOrEmpty(classId))
{
//TRY TO INSTANTIATE THE CLASS
try
{
instance = Activator.CreateInstance(Type.GetType(classId)) as IForexProvider;
}
catch
{
Logger.Error("Could not create Forex provider " + classId);
instance = null;
}
}
}
return(instance);
}
){kind=link}