silverlight创建带有按钮单击的矩形 [英] silverlight create rectangle with button click

问题描述

大家好，
我想在C#中创建Silverlight应用程序，我添加了一个按钮，并且想一次单击一次创建一个矩形，现在我设法创建了一个矩形，但是问题是我不知道如何更改其位置下一个要创建的矩形?

请帮助我是否希望每次单击都在另一个旁边创建矩形?！
谢谢
这是代码:

C#

Hi all,
I want to create silverlight application in C#, I added a button and I want to create rectangles with each click one by one, now i managed to create one rectangle but the problem is that i don''t know how to change the location of the next rectangle to be created?

Please Help I want each click create rectangle next to another?!
Thanks
here is the code:

C#

public MainPage()
        {
            InitializeComponent();

            Canvas c = new Canvas();

            Button b = new Button();
            Canvas.SetLeft(b, -50);
            Canvas.SetTop(b, 20);
            b.Width = 75;
            b.Height = 23;
            LayoutRoot.Children.Add(b);
            b.Click += new RoutedEventHandler(b_Click);
            

        }

        void b_Click(object sender, RoutedEventArgs e)
        {
            //throw new NotImplementedException();

            Rectangle rectangle = new Rectangle();
            rectangle.Fill = new SolidColorBrush(Colors.Cyan);
            Canvas.SetLeft(rectangle, 100);
            Canvas.SetTop(rectangle, 100);
            rectangle.Width = 200;
            rectangle.Height = 100;

            LayoutRoot.Children.Add(rectangle);

        }

xaml:

xaml:

<canvas x:name="LayoutRoot" removed="White" height="215" width="292" xmlns:x="#unknown">

</canvas>

推荐答案

您可以编写c#代码以根据前一个矩形设置下一个矩形.修改后的代码为:

You can write c# code to set the next rectangle based on previous one. Modified code will be:

static double prevLoc = 0;
void b_Click(object sender, RoutedEventArgs e)
{
    //throw new NotImplementedException();

    Rectangle rectangle = new Rectangle();
    rectangle.Fill = new SolidColorBrush(Colors.Cyan);
    rectangle.Width = 200;
    rectangle.Height = 100;
    rectangle.SetValue(Canvas.LeftProperty, prevLoc);
    prevLoc += 25;
    LayoutRoot.Children.Add(rectangle);

}

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