public void OnDeleteWithoutSaveCommand(object param)
{
DiagramVM diag = param as DiagramVM;
int index = Diagrams.IndexOf(diag);
Diagrams.Remove(diag);
if (diag.IsSelected && Diagrams.Count > 0)
{
if (Diagrams.Count == index)
{
Diagrams[index - 1].IsSelected = true;
}
else if (Diagrams.Count > index)
{
Diagrams[index].IsSelected = true;
}
}
if (Diagrams.Count == 0)
{
Exit.Execute(null);
}
}
