iot/labs/Teacher/Infrastructure/Domain/EntityBase.cs

using System;
using System.ComponentModel.DataAnnotations;

namespace Infrastructure.Domain
{
    public class EntityBase<TKey> 
    {
        [Required]
        public TKey Id { get; set; }
        public string IsDeleted { get; set; }

        public override string ToString()
        {
            return $"{ GetType().FullName}[{Id}]";
        }
    }
}