private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { if (cbxNewBackup.SelectedIndex != 0) { IBackup backup = BackupLoader.formats[cbxNewBackup.SelectedIndex - 1].CreateBackup(); if (backup != null) { DataHolder.AddBackup(backup); } UpdateBackupList(); cbxNewBackup.SelectedIndex = 0; } }