如何使用实体框架在数据库中一次保存多个对象

using System;
using System.Collections.Generic;
using Microsoft.EntityFrameworkCore;

// 创建实体对象
public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
}

// 创建上下文对象
public class MyDbContext : DbContext
{
    public DbSet<Product> Products { get; set; }

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

public class Program
{
    public static void Main()
    {
        // 添加实体对象到上下文
        var products = new List<Product>
        {
            new Product { Name = "Product 1" },
            new Product { Name = "Product 2" },
            new Product { Name = "Product 3" }
        };

        using (var context = new MyDbContext())
        {
            context.Products.AddRange(products);

            // 保存更改
            context.SaveChanges();
        }
    }
}