Display Selected Item of ListBox in Label or TextBox on SelectedIndexChanged in ASP.Net

Hi, i want to display value in textbox when a value is selected in listbox in webapplication vb.net.

 Dim con As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\User\Documents\Database4.accdb")
        Dim cmd As New OleDbCommand()
        cmd.Connection = con
        con.Open()
        cmd.CommandText = "Select ID,product from List"
        ' cmd.CommandText = CommandType.Text
        Dim da As New OleDbDataAdapter(cmd)
        Dim ds As New DataSet

        da.Fill(ds, "List")
        ListBox1.DataValueField = "ID"
        ListBox1.DataTextField = "product"
        ListBox1.DataSource = ds
        ListBox1.DataMember = "List"
        ListBox1.DataBind()


        cmd.ExecuteNonQuery()
        con.Close()