DropDownList 绑定数据库中的字段获取下拉列表值

Question

附上代码，到这里了。希望大家能帮忙补充完整，谢谢。  public DataSet GetcmData(string telphone)
    {
        string sql = "SELECT  telphone FROM CM_HISTORY_PHONE WHERE user_id=8001";        wfcrm.DAL.DALdb conn = new wfcrm.DAL.DALdb();
        conn.Open();
        DataSet ds = conn.ExeSelectSql(sql);
        conn.Close();        return ds;
    }    protected void Page_Load(object sender, EventArgs e)
    {
        string ptelphone = this.DropDownList1.Text;
        DataSet ds = new DataSet();
           ……    ｝

Answer 1

           
            if (!ispostback)
{
            drownlist1.DataTextField =  "绑定数据库字段";
            drownlist1.DataValueField = "绑定数据库字段";
            drownlist1.DataBind();
}

Answer 2

  public DataSet GetcmData(string telphone) 
    { 
        string sql = "SELECT  telphone FROM CM_HISTORY_PHONE WHERE user_id=8001";         wfcrm.DAL.DALdb conn = new wfcrm.DAL.DALdb(); 
        conn.Open(); 
        DataSet ds = conn.ExeSelectSql(sql); 
        conn.Close();         return ds; 
    }     protected void Page_Load(object sender, EventArgs e) 
    { 
         if(!isspostback)
              {
        string ptelphone = this.DropDownList1.Text; 
        DataSet ds = new DataSet(); 
        drownlist1.DataTextField =  "绑定数据库字段"; 
        drownlist1.DataValueField = "绑定数据库字段"; 
        drownlist1.DataBind();           }
    ｝