Is there a “All Children loaded” event in WPF

Question

I am listening for the loaded event of a Page. That event fires first and then all the children fire their load event. I need an event that fires when ALL the children have

Answer 1

One of the options (when content rendered):

this.LayoutUpdated += OnLayoutUpdated;

private void OnLayoutUpdated(object sender, EventArgs e)
            {
                if (!isInitialized && this.ActualWidth != 0 && this.ActualHeight != 0)
                {
                    isInitialized = true;
                    // Logic here
                }
            };