Linq2Rest使用类型为IQueryable<MyObject>
假设我有var keySelector = SortDescription.KeySelector;
if(keySelector.Type.Equals(typeof(Func<MyObject, Int64>)
{
queryable = querable.OrderBy<MyObject, Int64>(
keySelector as Expression<<Func<MyObject, Int64>>);
}
。 KeySelector可以应用于IQueryable.OrderBy,如下所示:
queryable = queryable.OrderBy(keySelector);
有没有办法动态匹配KeySelector的类型和queryable.OrderBy方法,这样我就不必按类型比较和调用方法?在理想的世界中,我将能够编写以下代码。
Queryable.OrderBy<TSource, TKey>(IQueryable<TSource>, Expression<Func<TSource, TKey>>)
但结果是
无法从用法中推断出方法
void vectormove(std::vector<int>& a, std::vector<int>& b) { a._M_impl._M_start = b._M_impl._M_start; a._M_impl._M_finish = b._M_impl._M_finish; a._M_impl._M_end_of_storage = b._M_impl._M_end_of_storage; }
的类型参数。尝试显式指定类型参数。