Backup Database

using Microsoft.SqlServer.Management.SMO;
public static void MakeBackup()
{
Server server = new Server("localhost");
Backup backup = new Backup();
backup.Action = BackupActionType.Database;
backup.BackupSetName = "Backup copy";
backup.BackupSetDescription = "Backup copy";
backup.Database = "DemoSQLServer";
backup.Devices.AddDevice("C:\\DemoSQLServer.bak",
DeviceType.File);
backup.SqlBackup(server);
}