c#分组linq结果生成一个特定类的新列表

// 假设我们有一个学生类(Student)，包含姓名和年龄属性
public class Student
{
    public string Name { get; set; }
    public int Age { get; set; }
}

// 创建一个学生列表
List<Student> students = new List<Student>
{
    new Student { Name = "Alice", Age = 18 },
    new Student { Name = "Bob", Age = 20 },
    new Student { Name = "Charlie", Age = 18 },
    new Student { Name = "Dave", Age = 19 }
};

// 使用LINQ查询语法进行分组
var groupedStudents = from student in students
                      group student by student.Age into ageGroup
                      select new
                      {
                          Age = ageGroup.Key,
                          Students = ageGroup.ToList()
                      };

// 使用LINQ方法语法进行分组
var groupedStudents = students.GroupBy(student => student.Age)
                              .Select(ageGroup => new
                              {
                                  Age = ageGroup.Key,
                                  Students = ageGroup.ToList()
                              });

// 遍历分组结果
foreach (var group in groupedStudents)
{
    Console.WriteLine($"Age: {group.Age}");
    foreach (var student in group.Students)
    {
        Console.WriteLine($"Name: {student.Name}");
    }
    Console.WriteLine();
}