如何在c#中将带等号"=“的字符串转换为json

using Newtonsoft.Json;

string str = "key1=value1&key2=value2&key3=value3";

// 使用Split方法将字符串分割为键值对
string[] keyValuePairs = str.Split('&');

// 创建一个Dictionary对象，用于存储键值对
Dictionary<string, string> dictionary = new Dictionary<string, string>();

// 遍历键值对数组，将键值对添加到字典中
foreach (string keyValuePair in keyValuePairs)
{
    string[] pair = keyValuePair.Split('=');
    string key = pair[0];
    string value = pair[1];
    dictionary[key] = value;
}

// 将字典对象转换为JSON字符串
string json = JsonConvert.SerializeObject(dictionary);

Console.WriteLine(json);