How to backup a SQLExpress database to a file that can be run/executed by a C# program?

Question

C++ / C#

Backup a SQLExpress database to a file launched/executed by a C# program

Answer 1

Here is what I was really looking for.
Technet.microsoft.com How to: Create a Full Database Backup (Transact-SQL)

Answer 2

1. Come up with an extension, for example .bmsql (you can use any)
2. Register it in the WIndows OS extension registry and assign your application to run, for example, when installing (publishing) it.
3. Process the parameter (file name) in your application, start the restore procedure.