private void LoadShippingAdmin(string providerName)
{
plhShippingProvider.Controls.Clear();
//Get an instance of the provider
IShippingProvider shippingProvider = StoreController.GetShippingProvider(providerName);
//Create an instance of the provider's admin control
ProviderControlBase providerControl = shippingProvider.GetAdminControl(this, ControlPath);
providerControl.ID = "ShippingProvider";
plhShippingProvider.Controls.Add(providerControl);
}