Trying to find the top 3 properties of a POCO instance, Part 2

Question

Hi folks,

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

Use the same answer as before, but when ordering multiply the value by the weight.

Answer 2

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);