Silverlight issue when drawing combobox

Technical Support
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1

When combobox is initialized with a selected index, the first time the dropdown is drawn, it contains only the selected item, like in the following image:

[upload|ZSqaO6MyzFCAe38LECkf4llwV1U=]

When the dropdown is closed and reopened, everything looks fine:

[upload|eTj9R3lm0gQHCev/CALoHa835qA=]

The sample program used to make these screenshots is attached: link text

Do you know how to correct this?

Thanks for any help

2

Changing Optimization from “Maximize Speed (/O2)” to “Minimize Size (/O1)” seems to correct the problem

3

Dear @Pascal
Thank you for reporting this. Please get back if you are facing more issues.
Kind Regards, Andy

4

@Pascal,

Could you please look here.
Let us know if it doesn’t help.

5

It works for 1 combobox, but when more than 1 comboboxes are used, one can be correct but others not.

6

This workaround seems to work for more than 1 combobox:

Add Handler on the DropDownOpened:

m_pcbTest->AddDropDownOpenedEventHandler(CreateDelegate(this, &MainPage::cbTest_DropDownOpened));

And update the layout inside the handler:

HRESULT MainPage::cbTest_DropDownOpened (IXRDependencyObject* pSender, XREventArgs* pArgs)
{
	IXRComboBoxPtr pcombo;
	pcombo = pSender;
	if(pcombo)
		pcombo->UpdateLayout();

    return S_OK;
}