无Xaml的WPF展示

我们创建一个wpf应用程序，我们把里面的xaml文件全部删除，添加一个新类：

如下图：

然后我们cs文件中的代码：

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Controls;
using System.Windows;
using System.Windows.Media;
using System.Windows.Shapes;

namespace 无xaml的WPF
{
    //首先继承System.Windows.Application对象
    class subMain : System.Windows.Application
    {
        //线程单元标记
        [STAThread]
        public static void Main()
        {

            System.Windows.Application app = new Application();
            MyWindow mw = new MyWindow();
            mw.Width = 500;
            mw.Height = 450;
            mw.BorderThickness = new Thickness(50, 5, 50, 5);
            app.Run(mw);
        }
    }

    public partial class MyWindow : Window//继承Window对象
    {
        //创建需要的元素
        Canvas canv;
        Ellipse e1;
        Button b1;
        Label lab1;
        Rectangle r1;
        Rectangle r2;
        public MyWindow()
        {
            canv = new Canvas();
            canv.Name = "C1";
            this.Content = canv;
            canv.Margin = new Thickness(0, 0, 0, 0);
            canv.Background = new SolidColorBrush(Colors.White);

            e1 = new Ellipse();
            e1.Fill = new SolidColorBrush(Colors.YellowGreen);
            e1.Stroke = new SolidColorBrush(Colors.Azure);
            e1.Width = 200;
            e1.Height = 200;
            e1.Margin = new Thickness(50, 100, 0, 0);
            canv.Children.Add(e1);


            r1 = new Rectangle();
            r1.Fill = new SolidColorBrush(Colors.Tomato);
            r1.Opacity = 0.5;
            r1.Stroke = new SolidColorBrush(Colors.Red);
            r1.Width = 200;
            r1.Height = 200;

            r1.SetValue(Canvas.LeftProperty, (double)150);
            r1.SetValue(Canvas.TopProperty, (double)100);
            canv.Children.Add(r1);


            b1 = new Button();
            b1.Width = 100;
            b1.Height = 20;
            b1.Content = "修改圆形位置";
            b1.SetValue(Canvas.LeftProperty, (double)r1.GetValue(Canvas.LeftProperty) + 50);
            b1.SetValue(Canvas.TopProperty, (double)r1.GetValue(Canvas.TopProperty) + 50);
            b1.Click += new RoutedEventHandler(b1_Click);
            canv.Children.Add(b1);


            Label lab0 = new Label();
            lab0.Margin = new Thickness(20, 20, 0, 0);
            lab0.Width = 400;
            lab0.Height = 40;
            lab0.FontSize = 24;
            lab0.Name = "lab0";
            lab0.Content = "无XAML动态编程演示";
            canv.Children.Add(lab0);

            lab1 = new Label();
            lab1.Margin = new Thickness(20, 50, 0, 0);
            lab1.Width = 400;
            lab1.Height = 40;
            lab1.FontSize = 24;
            lab1.Name = "lab1";
            lab1.Content = "Location:";
            canv.Children.Add(lab1);


            r2 = new Rectangle();


            r2.Width = 100;
            r2.Height = 50;
            r2.Fill = Brushes.YellowGreen;
            r2.Stroke = Brushes.RoyalBlue;
            r2.StrokeThickness = 4;
            canv.Children.Add(r2);


            e1.MouseMove += new System.Windows.Input.MouseEventHandler(el_MouseMove);
        }

        void b1_Click(object sender, RoutedEventArgs e)
        {
            Point p = System.Windows.Input.Mouse.GetPosition(canv as System.Windows.IInputElement);
            e1.Margin = new Thickness(p.X, p.Y, 0, 0);


        }


        void el_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
        {
            Ellipse a = e.Source as Ellipse;
            Point p = System.Windows.Input.Mouse.GetPosition(canv as System.Windows.IInputElement);
            lab1.Content = "Location:" + p.ToString();
        }


    }
}

效果展示：