private void AlphabetSoundGridView_ItemClick(object sender, ItemClickEventArgs e) { var sound = (Sound)e.ClickedItem; MyMediaElement.Source = new Uri(this.BaseUri, sound.AudioFile); //playing the sound // var dialog = new MessageDialog(sound.AudioFile.ToString()); String lett = sound.Name.ToString(); //String lett = sound.AudioFile.ToString().Substring(0,sound.a) //await dialog2.ShowAsync(); //var user = myTextBox.ToString(); Popup popup = new Popup(); popup.MaxHeight = 2000; popup.MaxWidth = 2000; //popup.VerticalOffset = 100; PopUpPage control = new PopUpPage(lett); popup.Child = control; popup.IsOpen = true; }