How to back up and resotre in windows applicaiton using C#?

I am developing windows application using C# and MS sql server.
Now i have completed the project except how to backup and restore.
now i want to have a backup and restore buttons.
when i click.. backup button i will have an option where to put the backup
or a mechanism to take schedule backup then each back up is different, not replacing the previous backup.

Restore: when i click restore i will have an option from where can i restore.

please please i really need how to take backup and restore from windows interface.
thank you for your all helps.

Are you saying, without actually saying, that you want to backup and restore the SQL Server database? If so then it's a simple matter of executing an appropriate SQL statement against the server using a SqlCommand, just as you would for any SQL statement. The SQL Server documentation can provide you with the appropriate syntax for a BACKUP DATABASE statement and a RESTORE DATABASE statement.