In WPF, triggers are commonly used in Style and Control Templates. The visual effect of a WPF element is changed by triggers when a property or data changes or when an event takes place. The WPF trigger is a very important feature that allows us to modify the visual effect of controls or elements. Therefore, you are able to dynamically modify the appearance and/or behaviour of your control without creating a new one.
Triggers can be divided into three categories :
Property Triggers : A change in one property will cause an animated or immediate change in another property.
Data Triggers : Data triggers are triggered when certain conditions are met by bound data.
Event Triggers : These triggers take action when a specific event occurs.
