private async void SignIn(object sender = null, RoutedEventArgs args = null)
{
var accounts = (await _app.GetAccountsAsync()).ToList();
// If there is already a token in the cache, clear the cache and update the label on the button.
if (SignInButton.Content.ToString() == clearCacheString)
{
TodoList.ItemsSource = string.Empty;
FileCache.Clear();
while (accounts.Any())
{
await _app.RemoveAsync(accounts.First());
accounts = (await _app.GetAccountsAsync()).ToList();
}
// Also clear cookies from the browser control.
SignInButton.Content = signInString;
UserName.Content = Properties.Resources.UserNotSignedIn;
return;
}
//
// Get an access token to call the To Do list service.
//
AuthenticationResult result = null;
try
{
// Force a sign-in (PromptBehavior.Always), as the ADAL web browser might contain cookies for the current user, and using .Auto
// would re-sign-in the same user
result = await _app.AcquireTokenInteractive(scopes).ExecuteAsync();
SignInButton.Content = clearCacheString;
SetUserName(result.Account);
GetTodoList();
}
catch (MsalException ex)
{
if (ex.ErrorCode == "access_denied")
{
// The user canceled sign in, take no action.
}
else
{
// An unexpected error occurred.
string message = ex.Message;
if (ex.InnerException != null)
{
message += "Error Code: " + ex.ErrorCode + "Inner Exception : " + ex.InnerException.Message;
}
MessageBox.Show(message);
}
UserName.Content = Properties.Resources.UserNotSignedIn;
return;
}
}
