为WPF中的动态形状数指定颜色

<Window x:Class="WpfApp.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">
    <Grid>
        <Rectangle Fill="Blue" Width="100" Height="100"/>
        <Ellipse Fill="Red" Width="100" Height="100" Margin="110,0,0,0"/>
    </Grid>
</Window>

using System.Windows;
using System.Windows.Shapes;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            // 创建一个新的矩形
            Rectangle rect = new Rectangle();
            rect.Width = 100;
            rect.Height = 100;

            // 动态设置颜色
            rect.Fill = System.Windows.Media.Brushes.Green;

            // 将矩形添加到窗口的Grid中
            myGrid.Children.Add(rect);
        }
    }
}