telegram-bot/Core/Data/CoreContext.cs

using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;

namespace Kruzya.TelegramBot.Core.Data
{
    public class CoreContext : DbContext
    {
        /// <summary>
        /// The all known users.
        /// </summary>
        public DbSet<BotUser> Users { get; set; }
        
        public DbSet<BotUserValue> UserValues { get; set; }

        public override void Dispose()
        {
            SaveChanges();
            base.Dispose();
        }
        
        public override ValueTask DisposeAsync()
        {
            SaveChanges(); 
            return base.DisposeAsync();
        }

        public CoreContext(DbContextOptions<CoreContext> ctx) : base(ctx)
        {
            Database.Migrate();
        }
    }
}