WPF Data Triggers Set Object properties based on events

Question

With DataTriggers in WPF its possible to set properties on controls based on the the object you have bound. For example you could set the Background of a TextBlock based on a IsAlive property on your object.

<DataTrigger Binding="{Binding Path=IsAlive}" Value="true">
    <Setter Property="Background" Value="Yellow"/>
</DataTrigger>

I want to know if its possible to go in reverse. Is it possible to set a property on a databound item based on the state of the control its bound to?

Say I want to set the IsAlive property to true when the control its bound to receives the mouseover event.

Can this be done in WPF & data triggers? Thanks.

Answer 1

I don't know if what you're asking is directly possible, but I suspect it isn't. On the other hand, I think you could make your example scenario work by binding the object's "IsAlive" property directly to the control's "IsMouseOver" dependency property, with Mode=OneWayToSource.

Answer 2

You might want to use EventSetter, then handle the setting by code using the DataContext property of the sender, or with GetBindingExpression.
This gives you an option to set a handler on the style level.