private async void BtnLogin_Click(object sender, RoutedEventArgs e)
{
if (await AppState.AttemptLogin(TxtUsername.Text, PswdPassword.Password))
{
AppState.CurrentUser = await AppState.LoadUser(TxtUsername.Text);
AppState.SetUserDatabaseInformation();
AppState.Navigate(new TrackerPage());
TxtUsername.Clear();
PswdPassword.Clear();
TxtUsername.Focus();
}
else
{
AppState.DisplayNotification("Invalid credentials. Please try again.", "Personal Tracker");
}
}