Scrolling to the end of a single line WPF TextBox

Question

This seems like such a simple thing but I just can\'t get it to work.

I have a single line text box that has a lot of text. What I want to happen is that whenever t

Answer 1

It is true - setting the caret property from code doesn't affect the view; and the caret can go outside the visible part.

kb_target_box.Focus(); // just for sure
Rect rect = kb_target_box.GetRectFromCharacterIndex(kb_target_box.CaretIndex);
kb_target_box.ScrollToHorizontalOffset(Math.Max((kb_target_box.HorizontalOffset + rect.Left - (kb_target_box.ActualWidth - 40)), 0.0));

h-scroll will follow the caret after it comes closer than 40 to the right TextBox border.

Answer 2

This worked for me.

textBox.CaretIndex = txt.Text.Length;  
textBox.ScrollToEnd();

Answer 3

You should be able to do it using these members:

• TextBoxBase.ScrollToEnd
• TextBox.CaretIndex

---

EDIT: not sure why ScrollToEnd isn't working... Anyway, this code works:

textBox.CaretIndex = textBox.Text.Length;
var rect = textBox.GetRectFromCharacterIndex(textBox.CaretIndex);
textBox.ScrollToHorizontalOffset(rect.Right);