WPF RichTextBox的滚动到TextPointer [英] WPF RichTextBox scroll to TextPointer

问题描述

在WPF RichtTextBox有滚动的方法：

The WPF RichtTextBox has a method to scroll:

RichTextBox.ScrollToVerticalOffset(double)

我想以这样的方式滚动，即一个cerctain范围或至少它开始进入视野。我如何转换的TextPointer以一种有意义的方式增加一倍？

I want to scroll in such a way, that a cerctain range or at least the start of it comes into view. How can I convert a TextPointer to double in a meaningful way?

推荐答案

有一个看FrameworkElement.BringIntoView方法。我使用的是这样的：

Have a look at the FrameworkElement.BringIntoView Method. I'm using something like this:

public void Foo(FlowDocumentScrollViewer viewer) {
    TextPointer t = viewer.Selection.Start;
    FrameworkContentElement e = t.Parent as FrameworkContentElement;
    if (e != null)
         e.BringIntoView();
}

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