/// <summary>
/// 获取实体集指定条数
/// </summary>
/// <param name="where">条件</param>
/// <returns></returns>
public IList <T> LoadEntities <S>(Expression <Func <T, bool> > where = null, Func <T, S> order = null, bool isAsc = false, int top = 0)
{
return(_baseDal.LoadEntities <S>(where, order, isAsc, top));
}