摘要： DropDownList dl = sender as DropDownList;string GroupID = dl.SelectedValue; about multi-level interaction ,we may add some cache, not every time selec 阅读全文

摘要： using System;using System.Collections.Generic;using System.Web;using System.Data;using System.Data.SqlClient; /// <summary>/// Summary description for 阅读全文

摘要： Today, i made a mistake, when i call a function, pass the wrong order of the parameters, such as ShowReport(GroupID, ClassID,ProcessID);but when i use 阅读全文