/// <summary>
/// 初始化一个 指定页索引与页大小的分页查询条件信息类 的新实例
/// </summary>
/// <param name="pageIndex"> 页索引 </param>
/// <param name="pageSize"> 页大小 </param>
public PageCondition(int pageIndex, int pageSize)
{
pageIndex.CheckGreaterThan("pageIndex", 0);
pageSize.CheckGreaterThan("pageSize", 0);
PageIndex = pageIndex;
PageSize = pageSize;
SortConditions = new SortCondition[] { };
}