this.DropDownList1.DataSource= Purview.PurviewList("tableclass");        DataTable.PurviewList("tableclass");
            this.DropDownList1.DataTextField = "re";
this.DropDownList1.DataValueField= "status";
this.DropDownList1.DataBind(); 
 
我这边绑定的DropDownList1  的  text value我怎么来获取选择了的text的value值?