using System;
using System.Collections.Generic;
using System.Linq;
 
namespace TestApp
{
 
 
    class Program
    {
 
        static void Main(string[] args)
        {
            var items = new[]{ new {ItemCode = 100, SoldQty = 1, Description = "desc1", UOM = "xxx"},
                               new {ItemCode = 100, SoldQty = 2, Description = "desc1", UOM = "xxx"},
                               new {ItemCode = 200, SoldQty = 1, Description = "desc2", UOM = "xxx"},
                               new {ItemCode = 200, SoldQty = 7, Description = "desc2", UOM = "xxx"}
                             };
 
            var resQuery = from i in items
                           group i by new {i.ItemCode,i.Description, i.UOM}into g
                           select new
                           {
                               ItemCode = g.Key.ItemCode,
                               TotalSold = g.Sum(p => p.SoldQty),
                               Description = g.Key.Description,
                               UOM = g.Key.UOM
                               /// other properties
                           };
 
            foreach (var res in resQuery)
            {
                System.Console.WriteLine(res.ToString());
            }
        }
    }
}

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