Question

a month ago I asked this question: Trying to find the top 3 properties of a POCO instance. Got an answer, worked well.

Now, I’m trying to find the top 3 properties of a POCO object (like my previous question) but where each property has a WEIGHT. The value of the property comes first. The weight then comes in second … if two or more properties have the same value.

Lets expand on the data from my previous question as a starting point for an example :-

Lower the weight number the better. 1 == best. 10 is worst. Each weight number is UNIQUE btw. The weight number can be anything … i just need to somehow weight em….

eg.
Math (weight: 1) - 83%
Engrish (weight: 6) - 82%
Chemistry (weight: 2) - 81%
Drama (Weight: 3) - 100%
Geography (weight: 4) - 82%
Sport (Weight: 5)- 81%
etc..

Top 3 results, in order, are:

• Drama
• Math
• Geography (not Engrish. Geography W = 4, Engrish W = 6)

I’m wondering if this can be achieved with Linq (like my previous question/answer). I’m happy with a dictionary, etc. I’m also guessing I might need to overload the Comparer method?

Cheers for any help 🙂

Answer 1

Uhm. Based on your previous answer, and made up from me mind. (ie not tested)

var result = (from p in pairs
              orderby p.Value descending, p.Weight
              select p);

var result = pairs.OrderByDescending(p => p.Value)
                  .ThenBy(p => p.Weight);