C#中動態數組（ArrayList ）應用執行個體子(三層代碼:資料訪問層,業務層,頁面層)

動態|訪問|資料|數組|頁面|應用執行個體

用綁定一個 DataList 的三層代碼說明一下：

DAL 資料訪問層代碼：
------------------------------------------------------------
//綁定IDList,顯示所有人員列表
  public DataSet SelectIDListAll()
  {
       string Str = "select p_number,p_name from t_people";
       DataSet ds = new DataSet();

       myCon = new SqlConnection(DAL.DALConfig.ConnectionString);
       try
       {
        SqlDataAdapter mycomm = new SqlDataAdapter(Str,myCon);
        mycomm.Fill(ds,"t_people");   
               
        return ds;
       }
       catch(Exception exc)
       {
        throw exc;
       }
  }

BLL業務層代碼：
----------------------------------------------------------------
//綁定IDList,顯示所有人員列表
  public ArrayList  SelectIDListAll()
  {
       DAL.TPeopleDao peopledao = new TPeopleDao();
       DataSet ds = new DataSet();
       ds = peopledao.SelectIDListAll();

       // Creates and initializes a new ArrayList.
       ArrayList myAL = new ArrayList();
       for(int i=0;i<ds.Tables[0].Rows.Count;i++)
       {
        myAL.Add(ds.Tables[0].Rows[i][0].ToString() + " " +ds.Tables[0].Rows[i][1].ToString() );           
       }
       return myAL;
  }

頁面層代碼：
-----------------------------------------------------------------
//綁定IDList,顯示所有人員列表
  private void SelectIDListAll()
  {
       Lab.BLL.TPeopleBiz peoplebiz = new TPeopleBiz();
       ArrayList myAL = peoplebiz.SelectIDListAll();
       this.P_IDlist.Items.Clear();

       for(int i = 0 ;i<myAL.Count;i++)
       {
        this.P_IDlist.Items.Add(myAL[i]);
       }

  }