C# - 将嵌套参数传递给 HttpClient PostAsync

Question

我可以使用一些帮助来将参数传递给 HttpClient.PostAsync() 调用。

我的第一个示例来自我已成功运行的代码...

            HttpClient client = new HttpClient();

            // The URL of the API endpoint
            string url = "https://user.auth.xboxlive.com/user/authenticate";

            // The parameters to send in the POST request
            var values = new Dictionary<string, string>
            {
                { "param1", "value1" },
                { "param2", "value2" },
                { "param3", "value3" },
            };

            // Encode the parameters as form data
            FormUrlEncodedContent content = new FormUrlEncodedContent(values);

            // Send the POST request
            HttpResponseMessage response = await client.PostAsync(url, content);
            

但是对于其他调用，我需要发送嵌套参数。 从概念上讲，它看起来像下面的代码。 我意识到这是错误的，因为它甚至不是合法的 C# 语法。
那么有人可以告诉我我应该做什么来实现这一目标吗？ 尽管我作为一名开发人员已经有很多年了，但当涉及到 Http 的东西时，我还处于小学水平。

            HttpClient client = new HttpClient();

            // The URL of the API endpoint
            string url = "https://user.auth.xboxlive.com/user/authenticate";

            // The parameters to send in the POST request
            var values = new Dictionary<string, string>
            {
                { "param1", "value1" },
                { "param2", 
                  {
                      {"param2a", "values2a"},
                      {"param2b", "values2b"},
                      {"param2c", "values2c"}
                   },
                { "param3", "value3" },
            };

            // Encode the parameters as form data
            FormUrlEncodedContent content = new FormUrlEncodedContent(values);

            // Send the POST request
            HttpResponseMessage response = await client.PostAsync(url, content);

感谢您提供的任何帮助

Answer 1

HTML 表单不支持嵌套结构，否则 JSON 是通用标准。这样您就可以使用嵌套的

Dictionary

并更改您的响应类型

var values = new Dictionary<string, object>
{
    { "param1", "value1" },
    { "param2", new Dictionary<string, string>
        {
            {"param2a", "values2a"},
            {"param2b", "values2b"},
            {"param2c", "values2c"}
        }
    },
    { "param3", "value3" },
};

string jsonContent = System.Text.Json.JsonSerializer.Serialize(values);

StringContent content = new StringContent(jsonContent, System.Text.Encoding.UTF8, "application/json");

HttpResponseMessage response = await client.PostAsync(url, content);