How do you add a StackLayout to a ScrollView at runtime using C#

Hi,

I would like to create a stacklayout control filled with controls using C# and then wrap this stacklayout inside a ScrollView. My code is as below.

public partial class MainPage : ContentPage
{

    public MainPage()
    {
        InitializeComponent();
        this.Content = this.BuildView();
    }

    private Layout BuildView()
    {
        StackLayout stackHeaderInv = new StackLayout()
        {
            Padding = new Thickness(0, 10),
            HorizontalOptions = LayoutOptions.FillAndExpand,
            BackgroundColor = "Gray" ,
        };

        //Custom control definition
        ...

        Button btnComplete = new Button() { Text = "Order Complete", HorizontalOptions = LayoutOptions.Center};
        btnComplete.Clicked += btnComplete_Clicked;

        stackHeaderInv.Children.Add(CustomControl);

        StackLayout stackAll = new StackLayout()
        {
            Padding = 0,
            Spacing = 0,
            Children =
                { stackHeaderInv, btnComplete }
        };

        return stackAll;
    }

Now I would like to add more controls to the stacklayout and so I need to use a ScrollView to scroll this page. I would like to know how to add the ScrollView to this BuildView() method in C#. Due to some reason I am not able to create this page with XAML and so have to use C# to create the page.

Thanks.

Rajesh.