Question

How can I add dynamically a grid into another grid? I can’t do this:

myGrid.Children.Add(dg);

Because I don’t have the instance of this grid – I’m using MVVM.

Please Help.

Answer 1

I assume, since you mention MVVM, that you want to accomplish this from your View Model?

In that case my suggestion is to send a message from the View Model to the View.
In the View you add a subscription to this message and add the Grid from there.

You could do it something like this, in its most simple form. This would be using the excellent MVVM Light framework:

ViewModel.cs:

private void CreateGrid()
{
  Messenger.Default.Send<NotificationMessage>(new NotificationMessage("CreateGrid"));
}

View.xaml.cs:

Messenger.Default.Register<NotificationMessage>(this, nm =>
{
  if (nm.Notification != "CreateGrid") return;
  // Create grid here
});