/// <param name="state">
/// A unique string used to maintain application state between the request and callback.
/// When Facebook redirects the user back to your redirect_uri, this parameter's value will be included in the response.
/// You should use this to protect against Cross-Site Request Forgery.
/// </param>
public string GetRedirectString(string state)
{
var requestBuilder = new Helpers.UriBuilder();
requestBuilder.BaseUrl = FacebookConst.BaseUriAuthorize;
requestBuilder.Append("client_id", appId);
requestBuilder.Append("state", state);
requestBuilder.Append("redirect_uri", redirectCallbackUrl);
requestBuilder.Append("scope", string.Join(",", rights.Distinct().Select(x => Enums.GetEnumDescription(x)).ToList()));
return requestBuilder.Uri;
}
public virtual string Execute(FacebookMethod method)
{
requestBuilder = new Helpers.UriBuilder();
requestBuilder.BaseUrl = String.Format("{0}/{1}", apiUrl.Trim('/'), Enums.GetEnumDescription(method));
requestBuilder.Append(Parameters);
if (!String.IsNullOrWhiteSpace(AccessToken))
{
requestBuilder.Append("access_token", AccessToken);
}
string result = string.Empty;
try
{
var request = HttpWebRequest.Create(requestBuilder.Uri);
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
var response = request.GetResponse();
using (var responseReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
result = responseReader.ReadToEnd();
}
}
catch (WebException wex)
{
using (var errorResponse = (HttpWebResponse)wex.Response)
{
using (var errReader = new StreamReader(errorResponse.GetResponseStream(), Encoding.UTF8))
{
result = errReader.ReadToEnd();
}
}
}
ErrorParser(result);
return result;
}