c#字典如何将具有单个键的重复值的分隔字符串列表中的数据添加到字典中

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        Dictionary<string, List<string>> dict = new Dictionary<string, List<string>>();

        // 假设有一个分隔字符串列表
        List<string> dataList = new List<string>()
        {
            "key1:value1",
            "key2:value2",
            "key1:value3",
            "key3:value4",
            "key2:value5"
        };

        foreach (string data in dataList)
        {
            string[] parts = data.Split(':');
            string key = parts[0];
            string value = parts[1];

            if (dict.ContainsKey(key))
            {
                dict[key].Add(value);
            }
            else
            {
                dict[key] = new List<string>() { value };
            }
        }

        // 打印字典中的数据
        foreach (KeyValuePair<string, List<string>> kvp in dict)
        {
            Console.WriteLine("Key: " + kvp.Key);
            Console.WriteLine("Values: " + string.Join(", ", kvp.Value));
            Console.WriteLine();
        }
    }
}