private void modifierComboBox_SelectedIndexChanged(object sender, EventArgs e) { HotkeyModifier modifier = (HotkeyModifier)modifierComboBox.SelectedItem; if (hkc.validateNewModifier(modifier) == false) { MessageBox.Show(this, "Your current hotkeys contain one or more protected keys for \n" + "the " + modifier.Description + " modifier: " + modifier.ProtectedKeysDescription + "\n" + "Please disable or remove these hotkeys first." , "Warning" , MessageBoxButtons.OK , MessageBoxIcon.Warning); modifierComboBox.SelectedIndex = currentModifierIndex; return; } updateModifier(); }