通过按钮单击访问画布名称

Question

我的窗口有超过50个按钮，每个按钮都有一个画布。

按钮1代表：

                <Button x:Name="button1" HorizontalAlignment="Left" Margin="98,292,0,0" VerticalAlignment="Top" Width="85" Height="115" FontSize="25" Background="Red" BorderBrush="White" Foreground="White" Click="button1_Click" MouseDown="button1_MouseDown">
                    <StackPanel>
                        <TextBlock TextAlignment="Center" RenderTransformOrigin="-0.643,1.424" HorizontalAlignment="Center" VerticalAlignment="Center"><Run Text="1"/></TextBlock>
                        <Canvas x:Name="canvas1"/>
                    </StackPanel>
                </Button>

所以我的问题是，如何在button1_Click事件中获取我的画布名称？ 我想创建一个函数，所以我可以触发不同的画布'。 例如：

void clearCanvas(int canvasNumber)
{
    canvas(+canvasNumber).Clear();
}

Answer 1

我想你想要这样的东西：

private void button1_Click(object sender, RoutedEventArgs e)
{
    Button btn = (Button)sender;
    Canvas canvas = ((StackPanel)btn.Content).Children
                                             .OfType<Canvas>()
                                             .First();
    canvas.Children.Clear();
    //at this point you can also get corresponding `Canvas` name 
    //(if you really have to) :
    //String name = canvas.Name;
}