This could be very simple.
I have a textbox on a WinForm, Text = "ABCDEFGH". I need to select "BCD" and leave the I-Beam (cursor, caret, blinking '|') right between the 'A' and the 'B'. Setting SelectionStart = 1 and SelectionLenght = 3 doesn't work and I can't figure it out.
preguntado el 01 de febrero de 12 a las 22:02
Necesita configurar el
SelectionLength to 0 as anotado en la documentación.
You can programmatically move the caret within the text box by setting the SelectionStart to the position within the text box where you want the caret to move to and set the SelectionLength property to a value of zero (0).
If the issue is that BCD is in fact selected, yet you want the cursor moved back before the B I don't believe you will be able to do that via the framework properties since selecting text will move the cursor to the end of the text. You would need to use coordinates and a native interop as noted aquí.
[DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] static extern bool GetCaretPos(out Point lpPoint);
Entonces podrías llamar SetCaretPos.
Si configura el
TextBox.Multiline property to True, you can then do this by using a negative selection length. You need to use the
Select() overload as
SelectionLength will not permit negative values.
textBox.Select(1 + 3, -3);