LINQ Query with grouping and ranking

Question

I have a sql table called predictions with data as below

Week    Player     Points
201101  Mark       7
201101  Mark       7
201101  Pete       7
201101  Pet         


        

Answer 1

This code seems to be what you need:

    var result = this.DataList
            .GroupBy(data => data.Week)
            .Select(data=>
            {
                return data.GroupBy(item => item.Name)
                    .Select(item => new { Name = item.Key, SumPoints = item.Sum(v => v.Points) })
                    .OrderBy(item => item.SumPoints)
                    .FirstOrDefault();
            })
            .GroupBy(_=>_.Name)
            .ToDictionary(_=>_.Key, _=>_.Count());