Linq getting selections using ToList not working

[tshad]

I have a collection of a class (List<EditGrid>). I am trying to find duplicates and found this online and it seemed pretty clean but I am getting an error:

Cannot convert type 'System.Collections.Generic.List<string>' to 'System.Collections.Generic.List<OrderManagement.EntityLayer.EditGrid>'

I tried this a couple of ways and got the same error.

List<EditGrid> duplicates = Selections.GroupBy(x => x.KTrace)
                             .Where(g => g.Count() > 1)
                             .Select(g => g.Key)
                             .ToList();
or

List<EditGrid> duplicates = (List<EditGrid>)Selections.GroupBy(x => x.KTrace)
                             .Where(g => g.Count() > 1)
                             .Select(g => g.Key)
                             .ToList();

Where is my generic List of string?

How can I get this to work?

Thanks,

Tom

 

[Moregelen]

Remove the .Select line. You are basically telling the linq to select only the key, rather than the entire object.