将滚动查看器锁定到位
我在 Windows Phone 7 应用程序的滚动查看器内有一个 inkpresenter。通常，当用户开始绘图时，滚动查看器会接管中间笔划，从而很难实际绘制内容。我尝试在需要使用 inkpresenter 时禁用 ScrollBarVisibility，但随后滚动查看器会自动平移回顶部。那么如何在使用 inkpresenter 时防止滚动查看器滚动，同时仍保持滚动位置呢？
<ScrollViewer Name="ScrollBars" VerticalScrollBarVisibility="{Binding ScrollEnabled}" >
<Canvas Height="2000">
...
<InkPresenter Name="InkCanvas" Strokes="{Binding Strokes}" Canvas.Top="500" />
</ Canvas >
</ScrollViewer >
编辑：
所以我尝试使用代码隐藏中的滚动功能来更新垂直偏移，其中我有一个链接到以下代码的按钮：
var offset = scrollViewer.VerticalOffset;
ScrollEnabled = ScrollBarVisibility.Disabled;
scrollViewer.ScrollToVerticalOffset(offset);
同样，它只是返回到顶部。知道出了什么问题吗？
I have an inkpresenter inside a scrollviewer for a Windows Phone 7 application. Often when the user starts to draw, the scrollviewer takes over mid stroke, making it hard to actually draw stuff. I tried disabling the ScrollBarVisibility when the inkpresenter needs to be used, but then the scroll viewer automatically pans back up to the top. So how can I prevent the scrollviewer from scrolling when the inkpresenter is in use, while still maintaining the scroll position?
<ScrollViewer Name="ScrollBars" VerticalScrollBarVisibility="{Binding ScrollEnabled}" >
<Canvas Height="2000">
...
<InkPresenter Name="InkCanvas" Strokes="{Binding Strokes}" Canvas.Top="500" />
</ Canvas >
</ScrollViewer >
Edit:
So I tried using the scrolling function in the codebehind to update the vertical offset, where I have a button linked to the following code:
var offset = scrollViewer.VerticalOffset;
ScrollEnabled = ScrollBarVisibility.Disabled;
scrollViewer.ScrollToVerticalOffset(offset);
Again, it just goes back up to the top. Any idea whats wrong?
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禁用
VerticalScrollBarVisibility后，调用Scrollviewer.ScrollToVerticalOffset手动将 InkPresenter 引入视图。After disabling the
VerticalScrollBarVisibilitycallScrollviewer.ScrollToVerticalOffsetto manually bring the InkPresenter into view.