C# Linq将多个属性合并到一个列表

// 假设有两个对象列表：Person和Address
List<Person> personList = new List<Person>()
{
    new Person() { Id = 1, Name = "John" },
    new Person() { Id = 2, Name = "Alice" }
};

List<Address> addressList = new List<Address>()
{
    new Address() { PersonId = 1, City = "New York" },
    new Address() { PersonId = 2, City = "Los Angeles" }
};

// 定义一个合并属性的匿名对象列表
var mergedList = personList
    .Join(addressList,
        person => person.Id,
        address => address.PersonId,
        (person, address) => new
        {
            person.Id,
            person.Name,
            address.City
        })
    .ToList();

// 输出合并后的结果
foreach (var item in mergedList)
{
    Console.WriteLine($"PersonId: {item.Id}, Name: {item.Name}, City: {item.City}");
}