如何通过Id和list属性来.GroupBy()？

using System;
using System.Collections.Generic;
using System.Linq;

public class Product
{
    public int Id { get; set; }
    public int CategoryId { get; set; }
    public decimal Price { get; set; }
}

public class Program
{
    public static void Main()
    {
        List<Product> products = new List<Product>
        {
            new Product { Id = 1, CategoryId = 1, Price = 100 },
            new Product { Id = 2, CategoryId = 2, Price = 200 },
            new Product { Id = 3, CategoryId = 1, Price = 150 },
            // ... more products
        };

        var groupedProducts = products
            .GroupBy(p => p.CategoryId)
            .Select(g => new { CategoryId = g.Key, TotalPrice = g.Sum(p => p.Price) })
            .ToList();

        foreach (var group in groupedProducts)
        {
            Console.WriteLine($"Category {group.CategoryId}: Total Price {group.TotalPrice}");
        }
    }
}

const products = [
    { id: 1, categoryId: 1, price: 100 },
    { id: 2, categoryId: 2, price: 200 },
    { id: 3, categoryId: 1, price: 150 },
    // ... more products
];

const groupedProducts = products.reduce((acc, product) => {
    if (!acc[product.categoryId]) {
        acc[product.categoryId] = { categoryId: product.categoryId, totalPrice: 0 };
    }
    acc[product.categoryId].totalPrice += product.price;
    return acc;
}, {});

console.log(Object.entries(groupedProducts).map(([categoryId, data]) => 
    `Category ${categoryId}: Total Price ${data.totalPrice}`).join('\n'));