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WPFCombobox or ComboBox

Feb 4, 2010 at 3:41 PM

Problem with vertical Span and location

if I get the combobox (located in a ListViewCell) the mouse moves to the topleft corner of the monitor and click there. The location is not known (infinity)  and the vertical span throws an exception


{System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. (Null Pointer)
   bei White.Core.UIItems.ListBoxItems.WPFComboBox.get_VerticalSpan() in d:\white\Core\UIItems\ListBoxItems\WPFComboBox.cs:Zeile 28.}


the ListViewCell is a custom control and the value will be set using DataBinding


Any ideas?

Feb 10, 2010 at 6:35 AM
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