使用Linq在表中搜索来自自定义类的项

// 定义自定义类
public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

// 创建包含自定义类对象的表
List<Person> persons = new List<Person>
{
    new Person { Name = "Alice", Age = 25 },
    new Person { Name = "Bob", Age = 30 },
    new Person { Name = "Charlie", Age = 35 }
};

// 使用Linq查询语法进行搜索
var result = from person in persons
             where person.Age > 30
             select person;

// 使用Linq方法语法进行搜索
var result = persons.Where(person => person.Age > 30);

// 遍历搜索结果
foreach (var person in result)
{
    Console.WriteLine($"Name: {person.Name}, Age: {person.Age}");
}