使用返回标识的Z.EntityFramework的SingleInsertAsync方法插入实体框架

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

public class MyDbContext : DbContext
{
    public DbSet<User> Users { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseSqlServer("YourConnectionStringHere");
    }
}

public class User
{
    public int Id { get; set; }
    public string Name { get; set; }
    public int Age { get; set; }
}

public class UserRepository
{
    private readonly MyDbContext _context;

    public UserRepository(MyDbContext context)
    {
        _context = context;
    }

    public async Task<int> InsertUserAsync(User user)
    {
        return await _context.Users.AddAsync(user);
    }
}

public class Program
{
    public static async Task Main(string[] args)
    {
        using (var context = new MyDbContext())
        {
            var userRepository = new UserRepository(context);

            var newUser = new User
            {
                Name = "John Doe",
                Age = 30
            };

            await userRepository.InsertUserAsync(newUser);
        }
    }
}