/// <summary>
 /// 根据页容量返回总页数
 /// </summary>
 /// <param name="pageSize"></param>
 /// <param name="sqlWhere"></param>
 /// <returns></returns>
 public int GetPageCount(int pageSize, string sqlWhere = "")
 {
     return(dal.GetPageCount(pageSize, sqlWhere));
 }