public static void addToCart(string itemNumber, int qty, string empNumber)
{
UniversityStoreEntities context = new UniversityStoreEntities();
RequestStationaryCart c = new RequestStationaryCart();
c.EmployeeNumber = empNumber;
c.ItemCode = itemNumber;
c.Quantity = Convert.ToInt32(qty);
context.AddToRequestStationaryCarts(c);
context.SaveChanges();
}