Hello every body !

I have a Question, I try Code but this not work !, I don't know why ?

detail question

I had,

• one table User In DataSQL server User(IDuser,UserName,Contact)
• one variable connection SQL, sqlcon, this connection succeeded !
• one Method query Data From SQL,

public DataTable query(string strquery,SqlConnection con)
        {
            DataTable tbl = new DataTable();
            SqlDataAdapter dapter = new SqlDataAdapter(strquery, con);
            dapter.Fill(tbl);
            return tbl;
        }

• one dropdownlist with name : ListUser, and AutoPostBack = True, Event SelectedIndexChanged

and i using string query "Select username from user order by username", to add item into ListUser, this add succeeded !

now, I want, when i select item index other in all items of ListUser then ListUser will Display text of Item selected

ex have 5 items and when ...

item 1 : text Jim Smith -> ListUser.Text = Jim Smith

item 2 : text Micheal -> ListUser.Text = Micheal

How do I ... what I want ?

plz help me !!! tks