Linq返回基于属性计算出总和的列表

// 假设有一个包含属性的列表
List<Person> persons = new List<Person>
{
    new Person { Name = "Alice", Age = 25, Salary = 5000 },
    new Person { Name = "Bob", Age = 30, Salary = 6000 },
    new Person { Name = "Charlie", Age = 35, Salary = 7000 },
    new Person { Name = "David", Age = 40, Salary = 8000 }
};

// 使用Linq查询计算Salary属性的总和
var result = persons.GroupBy(p => p.Name)
                   .Select(g => new { Name = g.Key, TotalSalary = g.Sum(p => p.Salary) });

// 输出结果
foreach (var item in result)
{
    Console.WriteLine($"Name: {item.Name}, Total Salary: {item.TotalSalary}");
}