UWP DataGrid with custom column header code behind

Question

Hello,

I want to create custom column header for Windows Community Toolkit DataGrid code behind

My column header should be similiar like this:

            StackPanel stackPanel = new StackPanel();

            TextBlock nameTextBlock = new TextBlock { Text = "My Name" };

            TextBlock ageTextBlock = new TextBlock { Text = "My Age" };

            stackPanel.Children.Add(nameTextBlock);

            stackPanel.Children.Add(ageTextBlock);

How to aply it to DataGrid column header inside AutoGeneratingColumns event code behind?