public MainPageViewModel()
{
InitializeSendCommand();
// Initialize with default values
var r = new Random();
Messages = new ObservableCollection <Message>();
for (int i = 0; i < 10; i++)
{
var collection = new Message();
collection.Text = MessageText[r.Next(0, MessageText.Count() - 1)];
collection.IsIncoming = i % 2 == 0 ? true : false;
collection.MessagDateTime = DateTime.Now.ToString();
Messages.Add(collection);
}
GridIsVisible = true;
}