Consume Rest Webservice with json body request

This question already has an answer here:

How to post JSON to the server? 11 answers

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你必须使用StreamWriter和StreamReader 。

var httpWebRequest = (HttpWebRequest)WebRequest.Create(tb_URL.Text);
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
    string json = "{"lastName": "Jordan", "firstName": "Michael"}";

    streamWriter.Write(json);
    streamWriter.Flush();
    streamWriter.Close();
}

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

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