private void TestSendButton_Clicked(object sender, EventArgs e) { TestSendButton.IsEnabled = false; _client.SendTestNotificationToUserCompleted += ClientSendTestNotificationToUserCompleted; _client.SendTestNotificationToUserAsync(GlobalData.loginData); while (TestDone == -1) { continue; } TestSendLayout.Children.Remove(TestSendFrame); TestSendLayout.Children.Add(LabelFrame); Device.BeginInvokeOnMainThread(() => { this.Content = TestSendLayout; }); }