Backing up a MS-SQL database from hard disk with stored procedures?

void BackUp(string ConnectionString, string DatabaseFullPath, string backUpPath)
{
    progressBar1.Value = 0;

    using (SqlConnection con = new SqlConnection(ConnectionString))
    {
        con.Open();

        string UseMaster = "USE master";
        SqlCommand UseMasterCommand = new SqlCommand(UseMaster, con);
        UseMasterCommand.ExecuteNonQuery();

        progressBar1.Value += 25;

        string Alter1 = @"ALTER DATABASE [" + DatabaseFullPath + "] SET Single_User WITH Rollback Immediate";
        SqlCommand Alter1Cmd = new SqlCommand(Alter1, con);
        Alter1Cmd.ExecuteNonQuery();

        progressBar1.Value += 25;

        string Restore = @"BACKUP DATABASE [" + DatabaseFullPath + "] TO  DISK = N'" + backUpPath + @"' WITH NOFORMAT, NOINIT,  NAME = N'" + DatabaseFullPath + "-Full Database Backup', SKIP, NOREWIND, NOUNLOAD,  STATS = 10";
        SqlCommand RestoreCmd = new SqlCommand(Restore, con);
        RestoreCmd.ExecuteNonQuery();

        progressBar1.Value += 25;

        string Alter2 = @"ALTER DATABASE [" + DatabaseFullPath + "] SET Multi_User";
        SqlCommand Alter2Cmd = new SqlCommand(Alter2, con);
        Alter2Cmd.ExecuteNonQuery();

        progressBar1.Value += 25;

        labelReport.Text = "Successful";
    }
}