public virtual Boolean MoveNext()
{
Boolean result;
if (!Completed)
{
if (ProgressQueue.Count > 0)
{
TreeNodeType node = ProgressQueue.Dequeue();
foreach (TreeNodeType child in node.Children)
{
ProgressQueue.Enqueue(child);
}
CurrentItem = node;
}
else // Enumeration is complete.
{
CurrentItem = InvalidItem;
Completed = true;
}
result = !CurrentItem.Equals(InvalidItem);
}
else
{
result = false;
}
return(result);
}
