使用LINQ进行分组和求和(on conditions)

var data = new List<Person>
{
    new Person { Name = "John", Age = 30, Salary = 5000 },
    new Person { Name = "Alice", Age = 25, Salary = 4000 },
    new Person { Name = "Bob", Age = 35, Salary = 6000 },
    new Person { Name = "Alice", Age = 28, Salary = 4500 },
    new Person { Name = "John", Age = 32, Salary = 5500 }
};

var groupedData = from person in data
                  group person by person.Name into g
                  select new
                  {
                      Name = g.Key,
                      TotalSalary = g.Sum(p => p.Salary)
                  };

foreach (var group in groupedData)
{
    Console.WriteLine("Name: " + group.Name);
    Console.WriteLine("Total Salary: " + group.TotalSalary);
    Console.WriteLine();
}