wpf 分别用前台和后台 两种方法 绘制矩形 填充

xaml：

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <UniformGrid x:Name="CheckeBoard">
        <!--<Rectangle Fill="Black"/>
        <Rectangle Fill="White" />
        <Rectangle Fill="White" />
        <Rectangle Fill="Black"/>-->
    </UniformGrid>
</Window>

后台：

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;

namespace WpfApplication1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            CheckeBoard.Rows = 7;
            CheckeBoard.Columns = 7;

            for (int i = 0; i <= 24; i++) {
                CheckeBoard.Children.Add(new Rectangle() { Fill = Brushes.Black });
                CheckeBoard.Children.Add(new Rectangle() { Fill = Brushes.White });
            }
        }
    }
}