public void AdjustCommentCount(ItemKey itemKey, int adjustment)
{
ItemInfo ii = null;
if (itemKey.GetType(this).Commentable)
{
try
{
ii = new ItemInfo(this, itemKey);
}
catch (InvalidIteminfoException)
{
ii = ItemInfo.Create(this, itemKey);
}
ii.AdjustComments(adjustment);
ii.Update();
}
else
{
throw new InvalidItemException();
}
}