Дальше в WPF Grid и StackPanel:

private void Window_Loaded(object sender, RoutedEventArgs e){

StackPanel sp = new StackPanel();

for (int j = 0; j < 10; j++) sp.Children.Add(new TextBlock() { Text = "Item" + j});

this.Content = sp;

}

Только вот это StackPanel sp = new StackPanel();

в метод render() запихиваем.

Если рисовать хотите то так:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using System.Globalization;

namespace WpfApplication2 {

public class MyCTL : UIElement {

public MyCTL() {}

protected override void OnRender(DrawingContext dc)

{

dc.DrawText(new FormattedText(headers.Caption, CultureInfo.GetCultureInfo("de-de"), FlowDirection.LeftToRight, new Typeface("Times New Roman"), 15, Brushes.Black), new Point(10f, 10f));

}

}

public partial class Window1 : Window {

public Window1() {

InitializeComponent();

}

private void Window_Loaded(object sender, RoutedEventArgs e) {

MyCTL m = new MyCTL();

this.Content = m;

}

}

только запихиваете в OnRender

PS. для компактного кода, в предыдущем примере переделываем так:

foreach (var item in from head in headers join item in items on head.column_id equals item.column_id select new { subitem = item.subitem, x = head.x, y = item.row_id, Text = item.Text })