如何在AvalonEdit控件中获取文本的坐标变化？

using ICSharpCode.AvalonEdit;
using ICSharpCode.AvalonEdit.Document;
using ICSharpCode.AvalonEdit.Rendering;

// 创建AvalonEdit控件实例
TextEditor editor = new TextEditor();

// 监听文本内容的变化
editor.TextChanged += Editor_TextChanged;

// 获取文本的坐标变化
private void Editor_TextChanged(object sender, EventArgs e)
{
    TextEditor editor = (TextEditor)sender;
    TextView textView = editor.TextArea.TextView;

    // 遍历每一行
    for (int i = 0; i < textView.Document.LineCount; i++)
    {
        DocumentLine line = textView.Document.GetLineByNumber(i + 1);
        VisualLine visualLine = textView.GetVisualLine(line);

        // 获取行的文本内容和坐标信息
        string text = textView.Document.GetText(line);
        double top = visualLine.VisualTop;
        double bottom = visualLine.VisualBottom;

        // 处理坐标变化，例如输出到控制台
        Console.WriteLine("Line {0}: Text = {1}, Top = {2}, Bottom = {3}", i + 1, text, top, bottom);
    }
}