dropdownlist及listbox的数据绑定

前台代码：

 

                         < asp:DropDownList  ID ="DDLsurveyitems"  runat ="server"  Width ="250" >
                         </ asp:DropDownList >

 

 

后台代码：

 

代码

        DataTable ds  =  vote.getSurveyitemsmainAll();
        DDLsurveyitems.DataSource  =  ds;
        DDLsurveyitems.DataTextField  =   " SurveyItemMainName " ;
        DDLsurveyitems.DataValueField  =   " SurveyItemMainId " ;
        DDLsurveyitems.DataBind();