Distinct in LINQ Query in Entity Framework Core

Distinct method is used to return the distinct elements from a column in Entity Framework Core.

using EntityFrameworkCore_ConsoleApp.Models;
using System.Linq;

namespace EntityFrameworkCore_ConsoleApp
{
    public class Program
    {
        static void Main(string[] args)
        {
            using (var databaseContext = new DatabaseContext())
            {
                var categoryIds = (from product in databaseContext.Products
                                   select product.CategoryId).Distinct().ToList();
                categoryIds.ForEach(categoryId =>
                {
                    Console.WriteLine("Category Id: " + categoryId);
                    Console.WriteLine("---------------------");
                });
            }
        }
    }
}

Output

Category Id: 1
---------------------
Category Id: 2
---------------------
Category Id: 3
---------------------