EF分页查询

/// <summary>
       /// 分页查询 + 条件查询 + 排序
       /// </summary>
       /// <typeparam name="Tkey">泛型</typeparam>
       /// <param name="pageSize">每页大小</param>
       /// <param name="pageIndex">当前页码</param>
       /// <param name="total">总数量</param>
       /// <param name="whereLambda">查询条件</param>
       /// <param name="orderbyLambda">排序条件</param>
       /// <param name="isAsc">是否升序</param>
       /// <returns>IQueryable 泛型集合</returns>
       public IQueryable<T> LoadPageItems<Tkey>(int pageSize, int pageIndex, out int total, Expression<Func<T, bool>> whereLambda, Func<T, Tkey> orderbyLambda, bool isAsc)
       {
           total = MyBaseDbContext.Set<T>().Where(whereLambda).Count();
           if (isAsc)
           {
               var temp = MyBaseDbContext.Set<T>().Where(whereLambda)
                            .OrderBy<T, Tkey>(orderbyLambda)
                            .Skip(pageSize * (pageIndex - ))
                            .Take(pageSize);
               return temp.AsQueryable();
           }
           else
           {
               var temp = MyBaseDbContext.Set<T>().Where(whereLambda)
                          .OrderByDescending<T, Tkey>(orderbyLambda)
                          .Skip(pageSize * (pageIndex - ))
                          .Take(pageSize);
               return temp.AsQueryable();
           }
       }