Create backup of SQL Server 2005 database programmatically.

using Microsoft.SqlServer.Management.Smo;

private void btn_Start_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(saveFileDialog1.FileName))
            {
                MessageBox.Show("Select file first!");
            }
            else
            {
               // selection.restoreDatabase();
                //int num = selection.backupDatabase(saveFileDialog1.FileName);
                //this.Close();
               // MessageBox.Show(num.ToString());
                //MessageBox.Show("DONE");
                BackupDb();
            }
        }

private void btnBackupDb_Click(object sender, EventArgs e)
       {
           if (string.IsNullOrEmpty(saveFileDialog1.FileName))
           {
               MessageBox.Show("Select file first!");
           }
           else
           {
               BackupDb();
           }
       }

private void BackupDb()
        {
            dbName = ((Database)cmbBackupDb.SelectedItem).Name;
            Backup dbBackup = new Backup();
            try
            {
                dbBackup.Action = BackupActionType.Database;
                dbBackup.Database = dbName;
                dbBackup.BackupSetName = string.Format("{0} backup set.", dbName);
                dbBackup.BackupSetDescription = string.Format("Database: {0}. Date: {1}.", dbName, DateTime.Now.ToString("dd.MM.yyyy hh:m"));
                dbBackup.MediaDescription = "Disk";

                BackupDeviceItem device = new BackupDeviceItem(saveFileDialog1.FileName, DeviceType.File);
                dbBackup.Devices.Add(device);

                txtBackupSql.Text = dbBackup.Script(sqlServer);

                progBar.Visible = true;
                progBar.Value = 0;

                

                //get server id
                string myHost = System.Net.Dns.GetHostName();

                var ip_Address = Dns.GetHostEntry(myHost).AddressList.First(ipAddress => ipAddress.AddressFamily == AddressFamily.InterNetwork);

                if(ip_Address.ToString()=="192.168.1.10".ToString())
                {
                    dbBackup.Complete += new ServerMessageEventHandler(dbBackup_Complete);
                    dbBackup.PercentCompleteNotification = 5;
                    dbBackup.PercentComplete += new PercentCompleteEventHandler(dbBackup_PercentComplete);
                    dbBackup.SqlBackup(sqlServer);

                    progBar.Visible = false;
                }
                else
                {
                    MessageBox.Show("You can only create or restore backup only from server computer!");
                }
                this.Close();
                
            }
            catch (Exception exc)
            {
                dbBackup.Abort();
                MessageBox.Show(string.Format("Exception occured.\nMessage: {0}", exc.Message));
            }
            finally
            {
                sqlConn.Close();
            }

        }

        void dbBackup_PercentComplete(object sender, PercentCompleteEventArgs e)
        {
            if (progBar.Value < progBar.Maximum)
            {
                if ((progBar.Value + e.Percent) <= 100)
                {
                    progBar.Value += e.Percent;
                }
                else
                    progBar.Value = 100;
            }
        }

        void dbBackup_Complete(object sender, ServerMessageEventArgs e)
        {
            MessageBox.Show("Backup complete");
            lbl_confirm.Text = "DATABASE SUCCESSFULLY BACKED UP";
            lbl_confirm.Visible = true;
            lbl_confirm.ForeColor = Color.Green;
        }