public TaxInfo GetTaxRates(int portalID)
{
TaxInfo taxInfo = (TaxInfo)DataCache.GetCache("StoreCountryTaxRates" + portalID);
if (taxInfo == null)
{
taxInfo = CBO.FillObject <TaxInfo>(DataProvider.Instance().ExecuteReader("Store_Administration_GetCountryTaxRates", portalID));
if (taxInfo != null)
{
DataCache.SetCache("StoreCountryTaxRates" + portalID, taxInfo);
}
}
return(taxInfo);
}
private void LoadTaxRates()
{
TaxController controller = new TaxController();
TaxInfo taxInfo = controller.GetTaxRates(PortalId);
if (taxInfo != null)
{
cbEnableTax.Checked = taxInfo.ShowTax;
txtDefaultTaxRate.Text = taxInfo.DefaultTaxRate < 0 ? "" : taxInfo.DefaultTaxRate.ToString("0.00");
BindTaxRates(taxInfo.CountryTaxes);
}
IsReady = true;
}
/// <summary>
/// Calculate tax according the country/region of the deliveryAddress.
/// </summary>
/// <param name="portalID">ID of the portal</param>
/// <param name="cartItems">List of ICartItemInfo that need to have taxes calculated on.</param>
/// <param name="shippingInfo">ShippingInfo in the case that taxes need to be applied to shipping</param>
/// <param name="billingAddress">The address that the taxes should be applied for.</param>
/// <returns>ITaxInfo with the total amount of tax due for the cart items shipping cost.</returns>
public ITaxInfo CalculateSalesTax <T>(int portalID, IEnumerable <T> cartItems, IShippingInfo shippingInfo, IAddressInfo billingAddress) where T : ICartItemInfo
{
TaxInfo taxInfo = GetTaxRates(portalID);
if (taxInfo != null && taxInfo.ShowTax)
{
decimal taxRate = taxInfo.DefaultTaxRate / 100;
if (billingAddress != null && taxInfo.CountryTaxes != null)
{
ListController listController = new ListController();
List <ListEntryInfo> countries = new List <ListEntryInfo>(listController.GetListEntryInfoItems("Country"));
string countryCode = GetEntryValue(billingAddress.CountryCode, countries);
string regionCode = billingAddress.RegionCode;
if (!string.IsNullOrEmpty(regionCode))
{
List <ListEntryInfo> regions = new List <ListEntryInfo>(listController.GetListEntryInfoItems("Region", "Country." + countryCode));
regionCode = GetEntryValue(regionCode, regions);
}
taxRate = GetCountryRegionTaxRate(countryCode, regionCode, billingAddress.PostalCode, taxInfo.CountryTaxes, taxInfo.DefaultTaxRate);
}
// Compute Shipping Tax if needed
taxInfo.ShippingTax = shippingInfo.ApplyTaxRate ? shippingInfo.Cost * taxRate : 0M;
// Compute Sales Tax
decimal cartTotal = 0M;
foreach (T itemInfo in cartItems)
{
cartTotal += (itemInfo.SubTotal - itemInfo.Discount) * taxRate;
}
taxInfo.SalesTax = cartTotal + taxInfo.ShippingTax;
}
else
{
if (taxInfo == null)
{
taxInfo = new TaxInfo();
}
taxInfo.ShowTax = false;
taxInfo.DefaultTaxRate = 0M;
taxInfo.SalesTax = 0M;
taxInfo.ShippingTax = 0M;
}
return(taxInfo);
}
