Question

I am developing a desktop application in vb.net for student details management.

In that I want to add feature of backup and restore the data. By using this feature user should be able to take data backup and when he wants he should be able to restore data again (if system crash occurs) so data will not be lost.

How to do that using vb.net code, I am using VS2008.

Answer 1

You can execute BACKUP & RESTORE commands just the same way as any other via vb.net, so something like this would do it…

Dim sqlConn As New SqlConnection("Data Source=(local);Initial Catalog=master;User ID=sa;Trusted_Connection=true")

sqlConn.Open()

Dim sCommand = "BACKUP DATABASE [YourDatabaseName] TO DISK = N'C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Backup\Backup.bak' WITH COPY_ONLY"

Using sqlCmd As New SqlCommand(sCommand, sqlConn)
    sqlCmd.ExecuteNonQuery()
End Using

Where obviously your database name would replace [YourDatabaseName]. The equivalent RESTORE command would be something like this…

sCommand = "RESTORE DATABASE [YourDatabaseName] FROM DISK = N'C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Backup\TestBackup.bak' WITH REPLACE"

Using sqlCmd As New SqlCommand(sCommand, sqlConn)
    sqlCmd.ExecuteNonQuery()
End Using

You would need to review the documentation for these commands to tailor them to your specific scenario.