/// <summary>
/// 逆向排序操作
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <typeparam name="TKey"></typeparam>
/// <param name="source"></param>
/// <param name="keySelector"></param>
/// <returns></returns>
public static LinqDLR2Sql <TSource> OrderByDescending <TSource, TKey>(this LinqDLR2Sql <TSource> source, Func <TSource, TKey> keySelector)
{
var key = keySelector.Invoke(source.Item);
source.DoOrderByDescending(key);
return(source);
}
/// <summary>
/// 逆向排序操作
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <typeparam name="TKey"></typeparam>
/// <param name="source"></param>
/// <param name="keySelector"></param>
/// <returns></returns>
public static LinqDLR2Sql <TSource> ThenByDescending <TSource, TKey>(this LinqDLR2Sql <TSource> source, Func <TSource, TKey> keySelector)
{
var ss = (from t in new List <object>()
group t by t.GetType() into g
select g
);
var key = keySelector.Invoke(source.Item);
source.DoOrderByDescending(key);
return(source);
}
