public override string ToString()
{
IHtmlElement element = _scope as IHtmlElement;
if (element != null)
{
return("#" + element.Unique() + " ");
}
else if (_scope is IHtmlDocument)
{
return("#document# ");
}
else if (_scope is IHtmlFragment)
{
return("#fragment# ");
}
else
{
return("#unknow#");
}
}