Question

在触发TextBlock的MouseEnter事件时，嵌套在Border元素中，我想剪辑图像的特定部分（相当于CSS'background-position：-1100px -24px），将其作为Border元素的背景。以下是代码sofar：

XAML

<Border Margin="42,9,0,0">
    <TextBlock Style="{StaticResource MenuItem}" Name="metallicaButton" MouseEnter="metallicaButton_MouseEnter" Text="metallica" />
</Border>

C＃

 private void metallicaButton_MouseEnter(object sender, MouseEventArgs e)
    {
        /*
           ImageBrush img = new ImageBrush();
           img.ImageSource = new BitmapImage(new Uri(@"Images/frame.png", UriKind.Relative)); ;
           img.Stretch = Stretch.None;            

           need to develop a subsitute for CSS code:
           span:hover{background-position: -1100px -24px;}

           ...something more versatile than:
           img.AlignmentX = AlignmentX.Center;
           img.AlignmentY = AlignmentY.Bottom;

           ((Border)metallicaButton.Parent).Background = img;

                         OR

           Rect r = Rect.Empty;
           r.X = -1100;
           r.Y = -24;
           RectangleGeometry g = new RectangleGeometry();
           g.Rect = r;
           Image src = new Image();
           src.Source = new BitmapImage(new Uri(@"Images/frame.png", UriKind.Relative)); ;
           src.Clip = g;

           is there a way to do this:
           ((Border)((TextBlock)sender).Parent).Background = src;
        */
    }

有办法吗？

Answer 1

由于您无论如何都将TextBlock命名为“metallicaButton”，是否有任何理由不使用实际的Button控件并使用XAML在自定义按钮模板中将此效果创建为可视状态？

背景Silverlight中MouseEnter（悬停）事件的图像定位

1 个答案: