List Distinct entries based on property and sum of duplicates

Question

Im wondering I may be asking a simple question, but trying to get a elegant solution. I have a situation where below are the rows

State Label <

Answer 1

Not tested, but this should work.

var newList = list.GroupBy(x=> new {x.State , x.Label })
                  .Select(x=> new YourClass(x.Key.State, x.Key.Label, x.Sum(x=>x.Value) ))
                  .ToList();

Answer 2

On solution is using grouping:

var result = from o in listObj
             group o by o.State into g
             select new ValueLabels() 
             { 
                 State = g.Key, 
                 Label = g.First().Label,
                 Value = g.Sum(i => i.Value)
             };

Answer 3

try this :

MyListOfComplextData.GroupBy(r => r.state) .Select(a => new { sum= a.Sum(b => b.code), Name = a.Key}) .ToList();