复杂类型模型的Linq查询

using System;
using System.Linq;

namespace LinqExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建一个包含复杂类型的数据源
            var students = new[]
            {
                new Student { Name = "Alice", Age = 20, Courses = new[] { "Math", "Physics" } },
                new Student { Name = "Bob", Age = 22, Courses = new[] { "Chemistry", "Biology" } },
                new Student { Name = "Charlie", Age = 19, Courses = new[] { "History", "English" } }
            };

            // 编写查询语句，筛选年龄小于20岁的学生
            var query = from student in students
                        where student.Age < 20
                        select student;

            // 执行查询，并打印查询结果
            foreach (var student in query)
            {
                Console.WriteLine($"Name: {student.Name}, Age: {student.Age}");
            }
        }
    }

    class Student
    {
        public string Name { get; set; }
        public int Age { get; set; }
        public string[] Courses { get; set; }
    }
}