using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}

​

    public class TestClass

    {

        public abstract class LocalizableEntity<TLocalizedEntity> where TLocalizedEntity : class, ILocalizedData, new()

        {

            public abstract string Id { get; set; }  // Primary key

            public abstract List<TLocalizedEntity> LocalizedData { get; set; }

        }

​

        public interface ILocalizedData

        {

            string CultureName { get; set; }

        }

​

        public void MergeData<TEntity, TLocalizedEntity>(IEnumerable<TEntity> newItems)

            where TEntity : LocalizableEntity<TLocalizedEntity>

            where TLocalizedEntity : class, ILocalizedData, new()

        {

            // Get the existing items

            var existingItems = new List<TEntity>();

​

            // Get the deleted items

            var deletedItems = existingItems

                .ExceptBy(newItems.Select(x => x.Id), x => x.Id, StringComparer.InvariantCultureIgnoreCase);

        }

    }