Xamarin.Forms Grid with headers code snippet

xamgridheader

public class GridLayoutPage : ContentPage
{
    public GridLayoutPage()
    {
        var layout = new StackLayout
        {
            Orientation = StackOrientation.Vertical,
            Padding = 20
        };

        var header = new Grid()
        {
            ColumnSpacing = 10,
        };

        for (var i = 0; i < 4; i++)
        {
            header.ColumnDefinitions.Add(new ColumnDefinition()
            {   Width= new GridLength(1, GridUnitType.Star)});
        }

        header.Children.Add(new Label { Text = "One" }, 0, 0); // Left, First element
        header.Children.Add(new Label { Text = "Two" }, 1, 0); // Right, First element
        header.Children.Add(new Label { Text = "Three" }, 2, 0); // Left, Second element
        header.Children.Add(new Label { Text = "Four" }, 3, 0); // Right, Second element

        var grid = new Grid
        {
            RowSpacing = 10
        };

        for (var i = 0; i < 4; i++)
        {
            grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
        }

        for (int j = 0; j < 400; j++)
        {
            grid.Children.Add(new Label {Text = "item " + j}, j%4, j/4); 
        }

        layout.Children.Add(header);
        layout.Children.Add(new ScrollView { Content = grid, VerticalOptions = new LayoutOptions(LayoutAlignment.Fill, true)});
        Content = layout;
    }
}