private void deleteSelectedTribes()
{
if (listViewTribes.SelectedIndices.Count > 0 && (MessageBox.Show("Delete selected Tribes?", "Delete?", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes))
{
foreach (ListViewItem lvi in listViewTribes.SelectedItems)
{
tribes.Remove((Tribe)lvi.Tag);
}
updateTribeList();
}
}