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);
}
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));
}