How to get SqlServer dataBase Backup and Restore with time

Backup sqlBackup = new Backup();
sqlBackup.Action = BackupActionType.Database;
sqlBackup.BackupSetDescription = "ArchiveDataBase:" + DateTime.Now.ToShortDateString();
sqlBackup.BackupSetName = "Archive";
string date = DateTime.Now.ToString();
sqlBackup.Database = databaseName;
//BackupDeviceItem deviceItem = new BackupDeviceItem(path + "\\" + databaseName + ".bak", DeviceType.File);//user physical location for store .bak file
BackupDeviceItem deviceItem = new BackupDeviceItem(databaseName+".bak", DeviceType.File);
sqlBackup.Devices.Add(deviceItem);
ServerConnection connection = new ServerConnection(serverName);
Server sqlServer = new Server(connection);

Database db = sqlServer.Databases[databaseName];

sqlBackup.Initialize = true;
sqlBackup.Checksum = true;
sqlBackup.ContinueAfterError = true;
                
sqlBackup.Incremental = false;
                
//sqlBackup.ExpirationDate = DateTime.Now.AddDays(3);
//sqlBackup.LogTruncation = BackupTruncateLogType.Truncate;

sqlBackup.FormatMedia = false;
sqlBackup.SqlBackup(sqlServer);