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Silverlight - how to use keyboard with custom control check combobox

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Last Modified: 2012-05-10
Hello,

i have made a custom control which is a combobox with checkboxes as items (multiple selects possible).
How is it possible to use the keyboard (arrow up/down and space) within this custom control.
My control has the base class "control".
Inside it there is the private Combobox with a Templatebinding...

 

The data is bound dynamicaly to the ItemsSource of the combobox via a DependencyProperty and the private list "dataList".

 

All works well but the keyboard does not as expected!?!?!
I want to move with the cursors and select/deselect the checkboxes with the space key.
Please help me!
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