c# - 在wpf中绘制垂直线

Question

我编写了以下代码来在 Canvas 上生成线条

XAML

<Canvas HorizontalAlignment="Left" 
        x:Name="canvas1" Height="219" 
        Margin="10,10,0,0" Grid.Row="1" 
        VerticalAlignment="Top" Width="365"/>

C#

private void Draw()
{
    canvas1.Children.Clear();
    for (int i = 0; i < data.Length; i++)
    {
        data[i] = i;
        lines[i] = new Line()
        {
            X1 = leftMargin,
            Y1 = i * scale,
            X2 = i * scale,
            Y2 = i * scale,
            StrokeThickness = 2,
            Stroke = new SolidColorBrush(Colors.Black)
        };
        canvas1.Children.Add(lines[i]);
    }
}

但是我想画如下线。如何旋转 Canvas 以获得所需的输出

Answer 1

x = 0 且 y = 0 是左上角(而不是左下角)，因此 y 像是上下颠倒的

private void Draw()
{
    Line[] lines = new Line[100];
    int scale = 3;
    canvas1.Children.Clear();
    int yStart = 290;
    for (int i = 0; i < lines.Length; i++)
    {
        //data[i] = i;
        lines[i] = new Line()
        {
            X1 = i * scale,
            Y1 = yStart,
            X2 = i * scale,
            Y2 = 300 - (i * scale),
            StrokeThickness = 1,
            Stroke = new SolidColorBrush(Colors.Black)
        };
        canvas1.Children.Add(lines[i]);
    }
}