mousescroll of combobox scrolls the page too

[Newbie_WPF]

I have a WPF form , in that I have a combobox, when I Scroll down the combo box using the Mouse scroll wheel -> it will scroll the page as well as scrolls the combo box. What should I do so that the mouse scroll wheel only scrolls down the combo box and not the whole page.

Here is how it looks like in xaml
<corewpfataGridComboBoxColumn MinWidth ="60"
Header="BU ID"
HeaderStyle="{StaticResource RequiredColumnStyle}"
IsReadOnly="True"
FilterBehaviorType="Contains"
FilterMemberPath="ShortName"
FilterSecondaryMemberPath="BusinessUnitID"
Background="{StaticResource DisabledBackgroundBrush}"
TextPath="BusinessUnitID"
CodeMemberPath="BusinessUnitID"
DescriptionMemberPath="ShortName"
ScrollViewer.IsDeferredScrollingEnabled="False"
SelectedValuePath="ID"
DisplayMemberPath="BusinessUnitID"
SelectedValueBinding="{Binding Path=BusinessUnitEntityRID, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
ItemsSource="{Binding Path=StaticDataContext.BusinessUnits, Source={StaticResource proxy}}">
</corewpfataGridComboBoxColumn>

What should I add so that when mouse wheel scroll for combo box only scrolls the combo box and not both combo box and the page as well?