public ProductAlias Add(ProductAlias pt)
 {
     _unitOfWork.Repository <ProductAlias>().Insert(pt);
     return(pt);
 }
 public void Delete(ProductAlias pt)
 {
     _unitOfWork.Repository <ProductAlias>().Delete(pt);
 }
 public void Update(ProductAlias pt)
 {
     pt.ObjectState = ObjectState.Modified;
     _unitOfWork.Repository <ProductAlias>().Update(pt);
 }
 public ProductAlias Create(ProductAlias pt)
 {
     pt.ObjectState = ObjectState.Added;
     _unitOfWork.Repository <ProductAlias>().Insert(pt);
     return(pt);
 }