public override Task PreRender()
{
if (!Context.IsPostBack)
{
// load pickers
Categories = pickerService.GetCategories();
Suppliers = pickerService.GetSuppliers();
// load current product
if (IsNew)
{
CurrentProduct = new ProductDetailModel();
}
else
{
CurrentProduct = productsService.GetProductById(Id);
}
}
return(base.PreRender());
}