AnsweredAssumed Answered

Flickering ComboBox with Add or AddRange

Question asked by Checkcheck Master on Mar 19, 2018
Latest reply on Sep 14, 2018 by Checkcheck Master

Hi there!


Does anyone had experience with flickering or blinking ComboBoxes when updating them?

I like to have some ComboBoxes with the option SuggestAppend to give the user the possibility to select from earlier used data.

When selecting a SW file from a DataGridView some ComboBoxes are cleaned and filled from a text file, after that the program must be told to use the new ComboBox items with 'ComboBox.AutoCompleteSource = AutoCompleteSource.ListItems'.

Together with this command the ComboBox will flicker which look really unprofessional for me.

I've tried:

DoubleBuffered = True, as well in code as in options for the form.

ComboBox.BeginUpdate() and ComboBox.EndUpdate()

Both with no succes.


It's a widely bespoken subject at the internet but I did not find a solution for it.

Btw, it happens both in the Addin and stand alone version from the program, no difference.


Any ideas?