Sort Dictionary<> on value, lookup index from key

Posted by paulio on Stack Overflow See other posts from Stack Overflow or by paulio
Published on 2010-03-26T15:43:45Z Indexed on 2010/03/26 15:53 UTC
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Hi,

I have a Dictionary<> which I want to sort based on value so I've done this by putting the dictionary into a List<> then using the .Sort method.

I've then added this back into a Dictionary<>. Is it possible to lookup the new index/order by using the Dictionary key??

Dictionary<int, MyObject> toCompare = new Dictionary<int, MyObject>();

toCompare.Add(0, new MyObject());
toCompare.Add(1, new MyObject());
toCompare.Add(2, new MyObject());

Dictionary<int, MyObject> items = new Dictionary<int, MyObject>();
List<KeyValuePair<int, MyObject>> values = new List<KeyValuePair<int, MyObject>>   (toCompare);

// Sort.
values.Sort(new MyComparer());

// Convert back into a dictionary.
foreach(KeyValuePair<int, PropertyAppraisal> item in values)
{
      // Add to collection.
  items.Add(item.Key, item.Value);
}

// THIS IS THE PART I CAN'T DO...
int sortedIndex = items.GetItemIndexByKey(0);

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