C# 向请求添加JSON

我是C#的新手，我有一个任务要编写方法，该方法将JSON作为请求发送。最好的方法是什么？在方法内部，它应该如下所示：

var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", <<**my JSON**>>, ParameterType.RequestBody);

对于c#你可以这样做

var data = JsonConvert.SerializeObject(cart, Formatting.None);

---

其中一种方法是

var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://url");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
    string json = "{\"user\":\"test\"," +
                  "\"password\":\"bla\"}";

    streamWriter.Write(json);
}

var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
    var result = streamReader.ReadToEnd();
}

---

更简单的方法：JavaScript部分是从哪里来的？这是一个C#问题。他正在向C#发送请求。很抱歉误解了。编辑回答好的，你可以，但是OP使用的是RestSharp，这使得整个过程更简单，也不那么冗长。是的，这可能是一种方法。我还没有开始，但一定会努力的

var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://url");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
    string json = "{\"user\":\"test\"," +
                  "\"password\":\"bla\"}";

    streamWriter.Write(json);
}

var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
    var result = streamReader.ReadToEnd();
}