What is an eventsetter?

Table of Contents

Represents an event setter in a style. Event setters invoke the specified event handlers in response to events. The following example establishes a single EventSetter within a page-level style. The following shows the example event handlers:

When to use eventsetter instead of mainwindow?

And in the MainWindow, we’ll provide the event handler. Another scenario where an EventSetter will be useful is when we are using Triggers and event handlers will only be added depending on certain conditions.

How to handle events in WPF?

The above is the simplest way anyone can handle the event in WPF and is a very much short hand, because you leave everything to the context of the object itself. You skip one more step for casting the object, you also don’t have to create different functions with different appended names such as, “myButton_Click”, “myButton_MouseEnter”.

Do I need an eventsetter in DataGrid?

We’ll have to use an EventSetter. The following XAML shows a style for the DataGridCell where you can see the EventSetter. And in the MainWindow, we’ll provide the event handler. Another scenario where an EventSetter will be useful is when we are using Triggers and event handlers will only be added depending on certain conditions.

How to declare event setters for routed events?

You can declare event setters for routed events with a direct routing strategy, bubbling events, or tunneling events. Instances of the EventSetter class are usually created through Extensible Application Markup Language (XAML), as an object element within a style defined through XAML. An EventSetter might also be instantiated from code.

What is an event setter in HTML?

Event setters invoke the specified event handlers in response to routed events, which apply to all elements that reference the Style rather than requiring you to attach instance handlers to each individual element. Only Style.Setters support EventSetter objects. You can only declare event setters for events that are routed events.

How do I associate an event setter with a command?

You cannot associate an event setter of a Style with a command. What you can do is to create an attached behaviour that executes a command when a specific UI event is raised: Please refer to the following article for more information about how to implement the attached behaviour.