creating a backup form

private void btnBrowes_Click(object sender, EventArgs e)
        {
            // open folder dialog
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            fbd.ShowDialog();

            this.txtBackuppath.Text = fbd.SelectedPath.ToString();
        }

        private void btnBackup_Click(object sender, EventArgs e)
        {
           //Connect to DB 
            SqlConnection conn = new SqlConnection(ConfigurationSettings.AppSettings["ConnectionString"]);
            conn.ConnectionString = "Data Source=MICKY-PC;Initial Catalog=SMS;User ID=sa;Password=mike";
                                     
            string backuppath;
            backuppath = this.txtBackuppath.ToString();

            SqlCommand cmd = new SqlCommand();
            string sqlQuery = null;
            sqlQuery = "backup database SMS to disk = ''" + backuppath + "' + 'SMS' + DateTime.Now.ToShortDateString()'";

            cmd.Connection = conn;
            cmd.CommandText = sqlQuery;
            cmd.CommandType = System.Data.CommandType.Text;
            conn.Open();
            cmd.ExecuteNonQuery();
            conn.Close();
                MessageBox.Show("The backup was successfully performed");
        }