yammer integration :- writing activity using open_graph - facebook-opengraph

Question

While writing activity it return exception
ex {"The remote server returned an error: (400) Bad Request."}
I'm using the following code :-
public static string PostRequesttoYammer(string postBody, string url,string authHeader = null, string contentType = null)
{
string results = string.Empty;
try
{
HTTPWebReq = WebRequest.CreateHttp(url);
HTTPWebReq.Method = "POST";
if (!string.IsNullOrEmpty(authHeader))
HTTPWebReq.Headers.Add("Authorization: Bearer " + authHeader);
byte[] postByte = Encoding.UTF8.GetBytes(postBody);
if (string.IsNullOrEmpty(contentType))
HTTPWebReq.ContentType = "application/x-www-form-urlencoded";
else
HTTPWebReq.ContentType = contentType;
HTTPWebReq.ContentLength = postByte.Length;
Stream postStream = HTTPWebReq.GetRequestStream();
postStream.Write(postByte, 0, postByte.Length);
postStream.Close();
HTTPWebRes = (HttpWebResponse)HTTPWebReq.GetResponse();
postStream = HTTPWebRes.GetResponseStream();
StreamReader postReader = new StreamReader(postStream);
results = postReader.ReadToEnd();
postReader.Close();
postStream.Close();
}
catch (Exception ex)
{
}
return results;
}
I have obtained access token after that i'm trying to write an activity on yammer network .enter image description here
The image shows the content of local variables of function.

Answer 1

check the bellow code:
yam.platform.request({
url: "activity.json",
method: "GET",
data: {
"activity": {
"actor": { "name": "name", "email": "name#domain.onmicrosoft.com" },
"action": "create",
"object": {
"url": "https://www.news.google.com",
"image": "url",
"description": "Testing Description",
"title": "Open Graph Title"
},
"private": "false",
"message": "testing commit"
}
},
success: function (activity) {
console.log("Activity request was successful.");
},
error: function (activity) {
console.error("There was an error with the request.");
}
});