/// <summary>
/// 获取数量
/// </summary>
/// <param name="userName"></param>
/// <returns></returns>
public int GetCount(string where)
{
UsersBLL bll = new UsersBLL();
string decodeWhere = Common.Base64ToString(where);
string newWhere = Common.Where2Query <Roles>(decodeWhere);
return(bll.Count(newWhere));
}