如何在C＃中訪問JSON對象的結果

Question

如何通過C＃Rest API調用遍歷JSON結果：

        string url = string.Format("https://example.com/api/mytext");
        System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
        req.Method = "GET";
        req.UserAgent = "mykey";
        req.Accept = "text/json";

        using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)req.GetResponse())
        {
            if (resp.StatusCode == System.Net.HttpStatusCode.OK)
            {
                // how do I access the JSON here and loop through it?

            }
        }

resp對象中沒有“數據”：

Visual Studio似乎沒有在“ resp”中顯示任何結果-但我知道它們在那里，因為我已經在郵遞員中看到了結果。

謝謝馬克

Answer 1

將GetResponseStream()與StreamReader

string url = string.Format("https://example.com/api/mytext");
System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
req.Method = "GET";
req.UserAgent = "mykey";
req.Accept = "text/json";

using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)req.GetResponse())
{
    if (resp.StatusCode == System.Net.HttpStatusCode.OK)
    {
        string contents;
        // how do I access the JSON here and loop through it?
        using(var responseStream = resp.GetResponseStream())
        using(var responseStreamReader = new StreamReader(responseStream))
        {
            contents = responseStreamReader.ReadToEnd();
        }

        var deserializedContent = JsonConvert.DeserializeObject<T>(contents);
    }
}

在GetResponseStream上查看更多

在StreamReader上查看更多

在JsonConvert上查看更多

依賴項： Newtonsoft.Json

Answer 2

使用HttpWebResponse.GetResponseStream方法以Stream獲取結果。 然后，您可以使用Newtonsoft JSON.NET解析結果。

using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)req.GetResponse())
    {
        if (resp.StatusCode == System.Net.HttpStatusCode.OK)
        {
            using (var stream = resp.GetResponseStream())
            {
                // Process data with JSON.NET library here
            }

        }
    }

Answer 3

動態dynJson = JsonConvert.DeserializeObject（response）;