DropDown UltraCombo programmatically c#

Question

Can anyone help me how to open a ultracombo on runtime ? Example when a button pressed i want the ultracombo to open.

I'm using infragistics 5.3 and ultracombo not ultracomboEditor.

I have tried

combo.ToggleDropdown(),
SendMessage(combo.Handle.ToInt32(), CB_SHOWDROPDOWN, 1, IntPtr.Zero);

but nothing happened.

Have you tried / Does this compile - `combo.IsOpen = true`? – JKennedy Mar 16 '15 at 11:10 — JKennedy, Mar 16 '15 at 11:10
combo.isDropDown=true but it's only a read only property – user3012488 Mar 16 '15 at 12:02 — user3012488, Mar 16 '15 at 12:02

score 2 · Answer 1 · answered Jan 19 '16 at 21:11

2

You can use PerformAction on most of the Infragistics WinForm controls to simulate user actions like dropping down the combo.

combo.PerformAction(UltraComboAction.Dropdown);

answered Jan 19 '16 at 21:11

Mike

Example: MyComboBox.PerformAction(Infragistics.Win.UltraWinGrid.UltraComboAction.Dropdown); – Jeff Aug 01 '17 at 22:46
BTW--don't run this in the constructor of a form--it just ignores it. The form has to be rendered in order for it to work (i.e. "shown" event or later) – Jeff Aug 01 '17 at 22:46

score 0 · Answer 2 · answered Apr 02 '15 at 14:02

0

You can call the ToggleDropdown method on the UltraCombo if IsDroppedDown is false.

answered Apr 02 '15 at 14:02

alhalama

2 Answers2