椭圆未出现

时间:2016-01-02 04:21:06

标签: c# .net wpf ellipse

当我尝试获取Ellipse时,它没有显示。我设置颜色,大小和位置。

这是我目前的代码:

public static Ellipse MainSnake = new Ellipse();

private void button_Click(object sender, RoutedEventArgs e)
{
    button.Visibility = Visibility.Hidden;

    MainSnake.Height = 10;
    MainSnake.Width = 10;
    MainSnake.Fill = Brushes.Yellow;
    Canvas.SetLeft(MainSnake, 250);
    Canvas.SetTop(MainSnake, 150);
}

当我点击按钮时,所有出现的背景都是背景。

what I am experiencing

1 个答案:

答案 0 :(得分:2)

Ellipse是一个GUI对象,因此应该在运行时生成,您还需要将它添加到画布的子集合中:

private void Button_Click(object sender, RoutedEventArgs e)
{
    button.Visibility = Visibility.Hidden;

    Ellipse MainSnake = new Ellipse();
    MainSnake.Height = 10;
    MainSnake.Width = 10;
    MainSnake.Fill = Brushes.Yellow;
    Canvas.SetLeft(MainSnake, 250);
    Canvas.SetTop(MainSnake, 150);

    theCanvas.Children.Add(MainSnake);
}