Hi Mike,

Having the same problem here.

When trying to set the SelectionStart in runtime, I get an exception "Can't access SelectionStart unless the Editor is in edit mode."

I also tried 

            ProgressEdit.Select(ProgressEdit.Text.Length, 0);
            ProgressEdit.ScrollToCaret();

Still no good, all I get is that the text is added to the control but only the first lines are shown. To see the text at the last lines, I need to select the edit box and scroll down manually.

Any ideas?

Thanks,
Roy. 

Hi Roy,

I'm not sure I understand what you are trying to do here. But the error message is pretty clear. The control has to be in edit mode for SelectionStart or SelectionLength to be changed - so that include calling the Select method.

Make sure the control has focus and before you call this code.

Try this:

_ultraTextEditor.Editor.ExitEditMode(

true, true);

_ultraTextEditor.SelectionStart = _ultraTextEditor.Text.Length;

_ultraTextEditor.ScrollToCaret();

Oh, okay. So that seems like a good way to do it. :)

ScrollToCaret is documented as needing the AlwaysInEditMode property set to true.

I am using the UltraTextEditor in the same way as the original poster, ie in multiline mode to display progress of a task. With AlwaysInEditMode set to true, ScrollToCaret works fine and scrolls to the last line, but without this property, ScrollToCaret seems to be completely ignored.

The control is set as follows:

progressTextEditor.AlwaysInEditMode = True
progressTextEditor.Multiline = True
progressTextEditor.ReadOnly = True
progressTextEditor.Scrollbars = System.Windows.Forms.ScrollBars.Both
progressTextEditor.TabStop = False
progressTextEditor.WordWrap = False

Each time a new line is added, I do:

progressTextEditor.SelectionStart = progressTextEditor.TextLength
progressTextEditor.ScrollToCaret()

Are you suggesting this as a solution? Or as a way to duplicate the problem?

This code seems like it should result in an error, since you cannot set the SelectionStart when the control is not in edit mode.