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ComboDropDown DroppedDown issue

Thread ID:





72120 Mar 3,2008 07:35 PM UTC Mar 5,2008 09:51 PM UTC WinForms 1
Tags: Tools
Michael Sabin
Asked On March 3, 2008 07:35 PM UTC


I am creating a control that uses a ComboDropDown. For the combo, I created a user control that gets added to the combo's PopupControlContainer. In the user control, I have three radio boxes. The width and height of the popup needs to be changed depending on which radiobox has been selected.

I acomplish the resize in the following manner: On the event handler for the radioButton_Checked event, I change the popup's height and / or width. Then I run:
cmb.DroppedDown = false;
cmb.DroppedDown = true;

I was previously using Syncfusion 4.3 under VS 2003. Recently, I upgraded to Syncfusion 6.1 and VS 2008, and it does not seem to be working anymore. It looks like setting cmb.DroppedDown no longer hides the DropDown, like it did in the old release. Therefore, the DropDown does not resize properly.

Is there something else I can do?


Administrator [Syncfusion]
Replied On March 5, 2008 09:51 PM UTC

Hi Michael ,

If you want to hide the dropdown of comboDropDown control then you can use HidePopup() method of its PopupContainer. Please refer to the following code snippet.

this.userControl11.radioButton1.CheckedChanged += new EventHandler(radioButton1_CheckedChanged);
void radioButton1_CheckedChanged(object sender, EventArgs e)

Please refer to the attached sample that illustrates this.


Please let me know if you have any other questions.



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