// Select zone private void comboBoxZone_SelectedIndexChanged(object sender, EventArgs e) { if ((string)(sender as ToolStripComboBox).Items[(sender as ToolStripComboBox).SelectedIndex] != "") { editorControl.ChangeZone((string)(sender as ToolStripComboBox).Items[(sender as ToolStripComboBox).SelectedIndex]); } levelDisplay.Focus(); }