Question

我正致力于为我正在建造的文字编辑增加发现和替换功能,我希望能够编篡文本箱,以便所选的配对物放在屏幕上垂直。

Answer 1

http://msdn.microsoft.com/en-us/library/ms603094.aspx”rel=“noreferer” GetRectFromCharacterIndex,从特性指数转换为屏幕上的直径。这将造成滚动,因此,需要增加目前的垂直轨道:

var start = textBox.GetRectFromCharacterIndex(textBox.SelectionStart);
var end = textBox.GetRectFromCharacterIndex(textBox.SelectionStart + textBox.SelectionLength);
textBox.ScrollToVerticalOffset((start.Top + end.Bottom - textBox.ViewportHeight) / 2 + textBox.VerticalOffset);

如果你有RichTextBox,你将使用。文本编号:GetCharacterRect:

var start = textBox.Selection.Start.GetCharacterRect(LogicalDirection.Forward);
var end = textBox.Selection.End.GetCharacterRect(LogicalDirection.Forward);
textBox.ScrollToVerticalOffset((start.Top + end.Bottom - textBox.ViewportHeight) / 2 + textBox.VerticalOffset);

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