我正在开发一个文本编辑器,想要添加查找和替换功能。为了让选定的匹配项在屏幕上垂直居中,我希望能够滚动文本框。
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);
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);