renewing facebook's access token

Question

Hello,

Iam trying to Renew Facebook's Access Token with following code but I get a exception('System.Threading.Tasks.Task<object>' does not contain a definition for 'access_token') in following line

oldToken = result.access_token;

following is my code for renewing token

public void GetExtendedAccessToken1(string oldToken)
{
    FacebookClient facebookclient1 = new FacebookClient(App.AccessToken);
    facebookclient1.AppId = Constants.FacebookAppId;
    facebookclient1.AppSecret = Constants.FaceBookAppSecret;
    dynamic result = facebookclient1.GetTaskAsync("oauth/access_token?client_id=**********&client_secret=**********c&grant_type=fb_exchange_token&fb_exchange_token=" + oldToken);
    oldToken = result.access_token; // got exception here
    tb.Text = oldToken.ToString();
}

Iam using Facebook C# SDK to implement this

how I could fix it?

here is the correct javascript code

http://social.msdn.microsoft.com/Forums/en-US/winappswithhtml5/thread/463f5b13-0e44-442d-adc1-187eb8e40684/

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Santana George

Answer 1

Try these links (if you have not already seen them), second one is quite detailed - 

http://facebooksdk.net/docs/windows/

http://facebooksdk.net/docs/windows/tutorial/

 https://github.com/facebook-csharp-sdk/facebook-windows8-sample.git 

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Thanks,

Sachin

My Samples | Personal Website

Answer 2

I have already saw it.

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Santana George