如何使用Linq将n个List<Dictionary<string，string>>合并到一个字典中

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

class Program
{
    static void Main()
    {
        // 创建n个List<Dictionary<string, string>>示例数据
        List<Dictionary<string, string>> lists = new List<Dictionary<string, string>>
        {
            new Dictionary<string, string> { { "key1", "value1" }, { "key2", "value2" } },
            new Dictionary<string, string> { { "key3", "value3" }, { "key4", "value4" } },
            new Dictionary<string, string> { { "key5", "value5" }, { "key6", "value6" } }
        };

        // 使用Linq将n个List<Dictionary<string, string>>合并到一个字典中
        Dictionary<string, string> mergedDictionary = lists
            .SelectMany(dict => dict)
            .ToLookup(pair => pair.Key, pair => pair.Value)
            .Aggregate(new Dictionary<string, string>(), (acc, lookup) =>
            {
                foreach (var pair in lookup)
                {
                    if (!acc.ContainsKey(pair.Key))
                    {
                        acc.Add(pair.Key, pair.First());
                    }
                }
                return acc;
            });

        // 输出合并后的字典
        foreach (var pair in mergedDictionary)
        {
            Console.WriteLine($"{pair.Key}: {pair.Value}");
        }
    }
}

key1: value1
key2: value2
key3: value3
key4: value4
key5: value5
key6: value6