Question

How can I have a control’s property to be set to a specific value, if a event of the same control fires?

Let’s say I have an expander

 <Expander Header="Click to expand" GotFocus="IsExpanded=True" />

And I want to set the IsExpanded Property to true, if it got Focus.
How can I do this in Xaml?

Answer 1

You can try to use binding, probably something like this:

 <Expander IsExpanded="{Binding IsFocused, RelativeSource={RelativeSource Self}, Mode=OneWay}" />