EXIBIR BANCOS DO SQL SERVER

using System.Data.SqlClient;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection con = new SqlConnection(@[Ô]Data Source=.\SQLEXPRESS; Integrated Security=True;Connect Timeout=30;User Instance=True[Ô]);
            SqlCommand cmd = new SqlCommand([Ô]SELECT name FROM sysdatabases[Ô], con);
            try
            {
                
                con.Open();
                SqlDataReader dr = cmd.ExecuteReader();
                while (dr.Read())
                {
                    listBox1.Items.Add(dr[0].ToString());
                }
                dr.Dispose();
                cmd.Dispose();
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());
            }
            finally
            {
                con.Close();
                con.Dispose();
            }
        }
    }
}