如何将书签放到滑块上，同时在c＃/ xaml metro app中添加时间轴标记

Question

我已检查this示例。它向我展示了TimeLineMarker API。现在，当我按下“添加标记”按钮时，添加了标记并且文本块显示了添加标记的标记。现在我想以任何形状或任何形式的任何符号的形式将这些标记显示到Slider控件上，所以当我想直接进入标记时，我可以直接单击滑块。我怎样才能做到这一点 ？

Answer 1

最后得到的答案从MSDN，感谢马特

XAML

<Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}"> 
    <StackPanel VerticalAlignment="Center"> 
     <Grid> 
      <Canvas x:Name="MyCanvas" Width="{Binding ElementName=MySlider, Path=ActualWidth}" Height="{Binding ElementName=MySlider, Path=ActualHeight}" Background="BlueViolet"/> 
      <Slider x:Name="MySlider" Orientation="Horizontal" Width="750" Height="50" Loaded="MySlider_Loaded_1"/> 
     </Grid> 
     <Button Content="Set marker" Click="Button_Click_1"/> 
    </StackPanel> 
</Grid> 

C＃

int UniqueId = 0; 
List<CustomTick> MyCustomTicks = new List<CustomTick>(); 
Thumb MySliderThumb; 
Point ThumbCurrentPoint; 
private void MySlider_Loaded_1(object sender, RoutedEventArgs e) 
{ 
    FrameworkElement templateRoot = VisualTreeHelper.GetChild((Slider)sender, 0) as FrameworkElement; 
    MySliderThumb = templateRoot.FindName("HorizontalThumb") as Thumb; 
} 
private void Button_Click_1(object sender, RoutedEventArgs e) 
{ 
    MySliderThumb.TransformToVisual(MyCanvas).TryTransform(new Point(0, 0), out ThumbCurrentPoint); 
    CustomTick MyCustomTick = new CustomTick(); 
    MyCustomTick.X = ThumbCurrentPoint.X; 
    MyCustomTick.Y = ThumbCurrentPoint.Y; 
    MyCustomTick.Value = MySlider.Value; 
    MyCustomTick.ID = UniqueId++; 
    MyCustomTicks.Add(MyCustomTick); 
    Windows.UI.Xaml.Shapes.Rectangle MyRectangle = new Windows.UI.Xaml.Shapes.Rectangle(); 
    MyRectangle.Name = MyCustomTick.ID.ToString(); 
    MyRectangle.Fill = new SolidColorBrush(Windows.UI.Colors.Red); 
    MyRectangle.Width = MySliderThumb.ActualWidth; 
    MyRectangle.Height = MySliderThumb.ActualHeight; 
    MyRectangle.PointerPressed += MyRectangle_PointerPressed; 
    MyCanvas.Children.Add(MyRectangle); 
    Canvas.SetTop(MyRectangle, MyCustomTick.Y - MyRectangle.Height); 
    Canvas.SetLeft(MyRectangle, MyCustomTick.X); 
} 
void MyRectangle_PointerPressed(object sender, PointerRoutedEventArgs e) 
{ 
    Windows.UI.Xaml.Shapes.Rectangle MyRectangle = sender as Windows.UI.Xaml.Shapes.Rectangle; 
    CustomTick MyCustomTick = new CustomTick(); 
    foreach (CustomTick CT in MyCustomTicks) 
    { 
if (CT.ID.ToString() == MyRectangle.Name) 
{ 
    MyCustomTick = CT; 
    break; 
} 
    } 
    MySlider.Value = MyCustomTick.Value; 
} 

List<CustomTick> MyTicks = new System.Collections.Generic.List<CustomTick>(); 
private class CustomTick 
{ 
    public double X; 
    public double Y; 
    public double Value; 
    public int ID; 
}