使用C#从dictionary<string、dictionary<string、string>>中删除最后一个字符

Dictionary<string, Dictionary<string, string>> myDictionary = new Dictionary<string, Dictionary<string, string>>();

// 添加示例数据
Dictionary<string, string> innerDictionary1 = new Dictionary<string, string>();
innerDictionary1.Add("Key1", "Value1");
innerDictionary1.Add("Key2", "Value2");
myDictionary.Add("OuterKey1", innerDictionary1);

Dictionary<string, string> innerDictionary2 = new Dictionary<string, string>();
innerDictionary2.Add("Key3", "Value3");
innerDictionary2.Add("Key4", "Value4");
myDictionary.Add("OuterKey2", innerDictionary2);

string outerKey = myDictionary.Keys.Last();
Dictionary<string, string> innerDictionary = myDictionary[outerKey];
string innerKey = innerDictionary.Keys.Last();
string innerValue = innerDictionary[innerKey];

innerValue = innerValue.Substring(0, innerValue.Length - 1);
innerDictionary[innerKey] = innerValue;

myDictionary[outerKey] = innerDictionary;

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

class Program
{
    static void Main(string[] args)
    {
        Dictionary<string, Dictionary<string, string>> myDictionary = new Dictionary<string, Dictionary<string, string>>();

        // 添加示例数据
        Dictionary<string, string> innerDictionary1 = new Dictionary<string, string>();
        innerDictionary1.Add("Key1", "Value1");
        innerDictionary1.Add("Key2", "Value2");
        myDictionary.Add("OuterKey1", innerDictionary1);

        Dictionary<string, string> innerDictionary2 = new Dictionary<string, string>();
        innerDictionary2.Add("Key3", "Value3");
        innerDictionary2.Add("Key4", "Value4");
        myDictionary.Add("OuterKey2", innerDictionary2);

        string outerKey = myDictionary.Keys.Last();
        Dictionary<string, string> innerDictionary = myDictionary[outerKey];
        string innerKey = innerDictionary.Keys.Last();
        string innerValue = innerDictionary[innerKey];

        innerValue = innerValue.Substring(0, innerValue.Length - 1);
        innerDictionary[innerKey] = innerValue;

        myDictionary[outerKey] = innerDictionary;

        Console.WriteLine("修改后的字典内容：");
        foreach (var outerPair in myDictionary)
        {
            Console.WriteLine("Outer Key: " + outerPair.Key);
            foreach (var innerPair in outerPair.Value)
            {
                Console.WriteLine("Inner Key: " + innerPair.Key + ", Inner Value: " + innerPair.Value);
            }
        }
    }
}