Question

I got a list of RegionGroup objects with two properties: an int “number” and a list<> of “Regions”.

I need to output a distribution of number of Region objects combined for each number.
For example, given:

[Region 1] – number: 1 – list<> has 5 members

[Region 2] – number: 3 – list<> has 2 members

[Region 3] – number: 4 – list<> has 9 members

[Region 4] – number: 1 – list<> has 5 members

[Region 5] – number: 3 – list<> has 4 members

I need to get something like:

number:1 – total 10 members

number:3 – total 6 members

number:4 – total 9 members

I’ve been messing around with various tutorials, and I think I need to use groups, but I couldn’t quite get anything working.

Any help? Thanks!

Answer 1

The answer to this similar question may help:

Linq Query with SUM and ORDER BY

or this one

C# List<> GroupBy 2 Values