use entity framework to take each item in a column named “sku” and split it using slashes. save the result to the database. then send an email complaining in csharp

main.cs
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Text.RegularExpressions;

namespace ConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var db = new DbContext())
            {
                var products = db.Products.ToList();
                foreach (var product in products)
                {
                    var skuParts = product.Sku.Split('/');
                    product.SkuPart1 = skuParts.Length > 0 ? skuParts[0] : null;
                    product.SkuPart2 = skuParts.Length > 1 ? skuParts[1] : null;
                    product.SkuPart3 = skuParts.Length > 2 ? skuParts[2] : null;
                    // More sku parts go here if needed

                    db.Entry(product).State = EntityState.Modified;
                }

                db.SaveChanges();
            }

            SendEmail("Example subject", "Example body");
        }

        static void SendEmail(string subject, string body)
        {
            var smtpClient = new SmtpClient("smtp.example.com")
            {
                UseDefaultCredentials = false,
                Credentials = new NetworkCredential("example@example.com", "password"),
                Port = 587,
                EnableSsl = true
            };

            var mailMessage = new MailMessage()
            {
                From = new MailAddress("example@example.com"),
                Subject = subject,
                Body = body
            };
            mailMessage.To.Add(new MailAddress("recipient@example.com"));

            smtpClient.Send(mailMessage);
        }
    }

    class Product
    {
        public int Id { get; set; }
        public string Sku { get; set; }
        public string SkuPart1 { get; set; }
        public string SkuPart2 { get; set; }
        public string SkuPart3 { get; set; }
        // More sku parts go here if needed
    }

    class DbContext : System.Data.Entity.DbContext
    {
        public DbSet<Product> Products { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            modelBuilder.Entity<Product>()
                .Property(p => p.Sku)
                .HasMaxLength(50)
                .IsRequired();
        }
    }
}
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