Asp.net mvc 如何使用httpwebrequest使用MVC4WebAPI服务

我正在使用MVC4WebAPI服务

string postData = string.Format("user={0}&pwd={1}", "me", "123");
            HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("http://sb2212.myaddresss.in/api/values/pavan?id=1&srt=2");
            webRequest.Method = "post";
            webRequest.ContentType = "application/json; charset=utf-8";
            webRequest.ContentLength = postData.Length;
            try
            {
                using ( StreamWriter requestWriter2 = new StreamWriter(webRequest.GetRequestStream()))
                {
                    requestWriter2.Write(postData);
                }

                using (StreamReader responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream()))
                {
                    // dumps the HTML from the response into a string variable
                    postData = responseReader.ReadToEnd();
                }

回复是“OK”，但我得到的是空洞的回复。

---

输出为“”。

您可以使用HttpClientPostAsJson，post对象需要是Json对象，而不是表单编码

    var postData = JsonConvert.DeserializeObject(string.Format("{user={0},pwd={1}}", "me", "123"));


    using (var client = new HttpClient())
                {
                    string URL= "http://sb2212.myaddresss.in/api/values/pavan?id=1&srt=2";
                    var response = await client.PostAsJsonAsync(URL, postData );
                    var result= await response.Content.ReadAsStringAsync();
                    var resultobj = JsonConvert.DeserializeObject(result)

                }

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HttpClient不适用于我。它表明使用System.Net.Http无法找到命名空间；如果您有使用Newtonsoft.Json的.NET4.0；使用nuget安装