private void ShowEdgeList_Click(object sender, RoutedEventArgs e)
{
if (edgeList == null)
{
edgeList = new EdgeEditorWindow(this, airfield);
}
edgeList.Closed += EdgeList_Closed;
edgeList.Show();
}
private void EdgeList_Closed(object sender, EventArgs e)
{
edgeList = null;
}
