public MainWindow()
{
InitializeComponent();
app = new PublicClientApplication(clientId, authority, TokenCacheHelper.GetUserCache());
GetTodoList();
}
protected override async void OnInitialized(EventArgs e)
{
base.OnInitialized(e);
Scopes = new string[] { todoListServiceScope };
// Initialize the PublicClientApplication
app = new PublicClientApplication(clientId, "https://login.microsoftonline.com/common/v2.0", TokenCacheHelper.GetUserCache());
AuthenticationResult result = null;
// TODO: Check if the user is already signed in.
// As the app starts, we want to check to see if the user is already signed in.
// You can do so by trying to get a token from MSAL, using the method
// AcquireTokenSilent. This forces MSAL to throw an exception if it cannot
// get a token for the user without showing a UI.
try
{
result = await app.AcquireTokenSilentAsync(Scopes, app.Users.FirstOrDefault());
// If we got here, a valid token is in the cache - or MSAL was able to get a new oen via refresh token.
// Proceed to fetch the user's tasks from the TodoListService via the GetTodoList() method.
SignInButton.Content = "Clear Cache";
GetTodoList();
}
catch (MsalUiRequiredException)
{
// The app should take no action and simply show the user the sign in button.
}
catch (MsalException ex)
{
if (ex.ErrorCode == "failed_to_acquire_token_silently")
{
// If user interaction is required, the app should take no action,
// and simply show the user the sign in button.
}
else
{
// Here, we catch all other MsalExceptions
string message = ex.Message;
if (ex.InnerException != null)
{
message += "Inner Exception : " + ex.InnerException.Message;
}
MessageBox.Show(message);
}
}
}
