public static SelectExpression AddOrderExpression(this SelectExpression select, OrderExpression ordering)
{
List<OrderExpression> orderby = new List<OrderExpression>();
if (select.OrderBy != null)
orderby.AddRange(select.OrderBy);
orderby.Add(ordering);
return select.SetOrderBy(orderby);
}
public static SelectExpression RemoveOrderExpression(this SelectExpression select, OrderExpression ordering)
{
if (select.OrderBy != null && select.OrderBy.Count > 0)
{
List<OrderExpression> orderby = new List<OrderExpression>(select.OrderBy);
orderby.Remove(ordering);
return select.SetOrderBy(orderby);
}
return select;
}
