如何在VS中使用c#生成Json格式请求？

using System.Net.Http;
using Newtonsoft.Json;

var requestData = new
{
    Name = "John",
    Age = 30,
    Email = "john@example.com"
};

string jsonRequest = JsonConvert.SerializeObject(requestData);

using (var client = new HttpClient())
{
    // 设置请求的URL
    client.BaseAddress = new Uri("https://api.example.com");

    // 设置请求的内容类型为application/json
    client.DefaultRequestHeaders.Accept.Clear();
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

    // 发送POST请求，并将JSON数据作为请求体
    HttpResponseMessage response = await client.PostAsync("/api/endpoint", new StringContent(jsonRequest, Encoding.UTF8, "application/json"));

    // 处理响应
    if (response.IsSuccessStatusCode)
    {
        // 解析响应内容
        string jsonResponse = await response.Content.ReadAsStringAsync();
        // 处理JSON响应数据
    }
    else
    {
        // 处理请求失败的情况
    }
}