WPF中通过代码设置控件的坐标

时间：2023-03-08 16:07:57

用WPF做贪吃蛇小游戏时，发现了一个问题：

贪吃蛇的移动，我是通过不断刷新Rectangle来实现(贪吃蛇的身体由一组Rectangle组成),因此需要不断调整Rectangle的坐标，但是WPF中没有Location的相关设置

在网上查到可以用Thickness实现

Rectangle Rec = new Rectangle();

Rec.Margin = new Thickness(, , , );

但总是调不准

其实可以通过Canvas实现

Canvas介绍

用代码实现Canvas:

// Create the application's main window

mainWindow = new Window ();

mainWindow.Title = "Canvas Sample";

// Create the Canvas

myParentCanvas = new Canvas();

myParentCanvas.Width = ;

myParentCanvas.Height = ;

// Define child Canvas elements

myCanvas1 = new Canvas();

myCanvas1.Background = Brushes.Red;

myCanvas1.Height = ;

myCanvas1.Width = ;

Canvas.SetTop(myCanvas1, );

Canvas.SetLeft(myCanvas1, );

myCanvas2 = new Canvas();

myCanvas2.Background = Brushes.Green;

myCanvas2.Height = ;

myCanvas2.Width = ;

Canvas.SetTop(myCanvas2, );

Canvas.SetLeft(myCanvas2, );

myCanvas3 = new Canvas();

myCanvas3.Background = Brushes.Blue;

myCanvas3.Height = ;

myCanvas3.Width = ;

Canvas.SetTop(myCanvas3, );

Canvas.SetLeft(myCanvas3, );

// Add child elements to the Canvas' Children collection

myParentCanvas.Children.Add(myCanvas1);

myParentCanvas.Children.Add(myCanvas2);

myParentCanvas.Children.Add(myCanvas3);

// Add the parent Canvas as the Content of the Window Object

mainWindow.Content = myParentCanvas;

mainWindow.Show ();

当然也可以通过添加Canvas控件来实现。

设置控件位置的方法：

var posX = 10;
var posY = 10;
Rectangle Rec = new Rectangle();

Canvas.SetLeft(Rec, posX);

Canvas.SetTop(Rec, posY);

你添加的canvas名字.Children.Add(Rec);

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