/// <summary>
/// 分页并获取数据结果实例集合。
/// </summary>
/// <typeparam name="TResult">数据结果类型。</typeparam>
/// <param name="selector">要应用于每个元素投影函数。</param>
/// <param name="predicate">筛选表达式。</param>
/// <param name="page">分页信息接口。</param>
/// <param name="predicate">排序选择器数组。</param>
/// <returns></returns>
public virtual IPageOfItems <TResult> PageOfItems <TResult>(Expression <Func <TRecord, TResult> > selector, Expression <Func <TRecord, bool> > predicate, IPage page, params OrderSelector <TRecord>[] orderSelectors)
{
var totalRecord = Count(predicate);
var safePage = PageUtil.GetSafePage(page);
if (totalRecord == 0)
{
return(PageUtil.Empty <TResult>(safePage));
}
//
return(PageUtil.Items(totalRecord, safePage,
BuildQueryable(predicate, safePage, orderSelectors).Select(selector).ToList()));
}
