.net - Programmatically Close A ComboBox Drop Down?

Apr 15, 2011

In a Windows Form application (VB.NET) I have a combo box and under certain conditions, when the user opens the DropDown list, I want to display a warning message.All of this works well: In the DropDown event, I check the conditions and if required I display the warning message.The problem is that when the user clicks on Yes on the warning message, I move to another tab on the main form and the drop down list still shows even though I've moved away from the tab containing the combo box.I've searched quite a bit and tried to set DroppedDown to False, call OnDropDownClosed, etc but nothing worked.It seems that when I try to close the drop down list from within the DropDown event, it doesn't work.

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[Code]...

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[Code]...

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[Cdoe]....

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[Code].....

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[code].....

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[Code]...

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[code]....

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[Code]...

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[code]....

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[Code]...

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[URL]

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[Code]....

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[code].....

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