public void ProcessItem(UserItem[] inventory)
{
for (int i = 0; i < Info.ItemTasks.Count; i++)
{
long count = inventory.Where(item => item != null).
Where(item => item.Info == Info.ItemTasks[i].Item).
Aggregate<UserItem, long>(0, (current, item) => current + item.Count);
ItemTaskCount[i] = count;
}
}