private async Task<Token> GetAccessToken()
{
var token = new Token();
var startUrl = Common.FormatAuthUrl(AuthorizationEndpointUrl, ResponseTypes.Token, ConsumerKey,
WebUtility.UrlEncode(CallbackUrl), DisplayTypes.Popup);
var startUri = new Uri(startUrl);
var endUri = new Uri(CallbackUrl);
var webAuthenticationResult =
await Windows.Security.Authentication.Web.WebAuthenticationBroker.AuthenticateAsync(
Windows.Security.Authentication.Web.WebAuthenticationOptions.None,
startUri,
endUri);
switch (webAuthenticationResult.ResponseStatus)
{
case Windows.Security.Authentication.Web.WebAuthenticationStatus.Success:
var responseData = webAuthenticationResult.ResponseData;
var responseUri = new Uri(responseData);
var decoder = new WwwFormUrlDecoder(responseUri.Fragment.Replace("#", "?"));
token.AccessToken = decoder.GetFirstValueByName("access_token");
token.RefreshToken = decoder.GetFirstValueByName("refresh_token");
token.InstanceUrl = WebUtility.UrlDecode(decoder.GetFirstValueByName("instance_url"));
return token;
case Windows.Security.Authentication.Web.WebAuthenticationStatus.ErrorHttp:
throw new Exception(webAuthenticationResult.ResponseErrorDetail.ToString());
default:
throw new Exception(webAuthenticationResult.ResponseData);
}
}
private async void Page_Loaded(object sender, RoutedEventArgs e)
{
try
{
_token = await GetAccessToken();
var message = string.Format("User-Agent Auth Successful:\n\nAccess Token: {0}\n\nRefresh Token: {1}\n\nInstance URL: {2}",
_token.AccessToken, _token.RefreshToken, _token.InstanceUrl);
lblOutput.Text = message;
}
catch (Exception ex)
{
lblOutput.Text = ex.Message;
}
}