ListView problem

Hi,



    DataTable dt = new DataTable("Employes");
        public TestList()
        {
            InitializeComponent();

            
            DataColumn c1 = new DataColumn("ID");
            DataColumn c2 = new DataColumn("Name");
            DataColumn c3 = new DataColumn("Dept");
            dt.Columns.Add(c1);
            dt.Columns.Add(c2);
            dt.Columns.Add(c3);

            DataRow dr = dt.NewRow();
            dr[0] = 1;
            dr[1] = "Raj";
            dr[2] = "IT";
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            dr[0] = 1;
            dr[1] = "Rajesh";
            dr[2] = "BT";
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr[0] = 1;
            dr[1] = "John";
            dr[2] = "MT";
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr[0] = 1;
            dr[1] = "Johnny";
            dr[2] = "LT";
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr[0] = 1;
            dr[1] = "Ramesh";
            dr[2] = "RT";
            dt.Rows.Add(dr);


//If you are using windows application
 listBox1.DataSource = dt.DefaultView;

            listBox1.DisplayMember = "Name";


            comboBox1.DataSource = dt.DefaultView;

            comboBox1.DisplayMember = "Dept";     


//If you are using wpf application

            listBox1.ItemsSource = dt.DefaultView;
            listBox1.DisplayMemberPath = "Name";

            comboBox1.ItemsSource = dt.DefaultView;
            comboBox1.DisplayMemberPath = "Dept";

        }



private void listBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (listBox1.SelectedIndex > -1)
            {
                string dept = ((DataRowView)listBox1.SelectedItem).Row.ItemArray[2].ToString();
                comboBox1.Text = dept;
            }
        }