Avalonedit以编程方式滚动 [英] Avalonedit scrollchanged programmatically

问题描述

我正在使用AvalonEdit显示带语法高亮的文件，我想处理ScrollChanged事件。我可以像这样注册xaml：

I'm using AvalonEdit to display a file with syntax highlighting and I would like to handle the ScrollChanged event. I can register for it in xaml like so:

<avalonedit:TextEditor ScrollViewer.ScrollChanged="TextEditor_ScrollChanged">

但是我想创建一个处理这个的子类，所以我不必每次都在Window的代码中这样做，但我一直无法弄清楚如何去做。



我尝试了什么：



以下尝试不起作用：

I would however like to create a subclass that handles this, so I don't have to do this in the Window's code each time, but I've been unable to figure out how to do it.

What I have tried:

The following attempts didn't work:

public class MySubClass : TextEditor
{
  public MySubClass()
  {
    // Cannot convert type 'MyProgram.MySubClass' to 'System.Windows.Controls.ScrollViewer'
    ((ScrollViewer)this).ScrollChanged += ScrollChanged;

    // Cannot convert type 'ICSharpCode.AvalonEdit.Editing.TextArea' to 'System.Windows.Controls.ScrollViewer'
    ((ScrollViewer)TextArea).ScrollChanged += ScrollChanged;
  }

我也尝试过关于stackoverflow的类似问题的建议：c# - 如何在MVVM中处理`ScrollViewer.ScrollChanged`事件？ - Stack Overflow [ ^ ]，但 UIHelper.FindChildren（this）找不到ScrollViewer。

I've also tried the suggestion to a similar question on stackoverflow: c# - How to handle `ScrollViewer.ScrollChanged` event in MVVM? - Stack Overflow[^], but UIHelper.FindChildren(this) doesn't find a ScrollViewer.

推荐答案

添加路由事件处理程序：

Add a routed event handler:

public class MySubClass : TextEditor
{
    public MySubClass()
    {
        AddHandler(ScrollViewer.ScrollChangedEvent, new ScrollChangedEventHandler(ScrollChanged));
    }

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