在 .net web api 中获取松弛频道历史记录

Question

我在 .Net Web API 中获取了频道历史记录。 slack 引用 https://api.slack.com/methods/channels.history 它指出我们需要发布请求。

如果有人可以帮助我编写代码，请。

我已经实现的部分代码：

   #region create json payload to send to slack

        GetLatestMessage payload = new GetLatestMessage()
        {
            channel = "###",//value.channel_name,
            token = "############################"//added the token i have generated
            // user_name = value.user_name,
            //text = value.text
        };

      #endregion


        string payloadJson = JsonConvert.SerializeObject(payload);

        using (WebClient client = new WebClient())
            {

            NameValueCollection data = new NameValueCollection();
            data["payload"] = payloadJson;
            var response = client.UploadValues("https://slack.com/api/channels.history", "POST", data);


            //The response text is usually "ok"
           string responseText = _encoding.GetString(response);
           LogFileWriter("response=" + responseText);
            return Request.CreateResponse(HttpStatusCode.OK);
            }

Answer 1

我发现了我面临的问题。我试图将 post json 数据发送到 Slack url。但是，Slack Web API 不接受 JSON 数据。现在，当我使用标准 HTTP 表单属性发布数据时，它接受并返回正确的响应。

新代码：

 var response = client.UploadValues("https://slack.com/api/channels.history", "POST", new NameValueCollection() {
{"token","###################"},
{"channel","######"}});

            //The response text is usually "ok"
           string responseText = _encoding.GetString(response);
           LogFileWriter("response=" + responseText);
            return Request.CreateResponse(HttpStatusCode.OK);
            }