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Related to this question, Check if an event already exists
but the difference is I just want to know if a particular method is attached to the event. So there may be other methods attached, but I just want to know if a particular one exists.
My environment is C# in dotnet 4.0.
E.g.
Event += MyMethod1;
Event += MyMethod2;
// Some code
if (MyMethod1IsAttachedToEvent())
{
// Achieved goal
}
Is this possible?
884
Right-click on the search icon button and choose “inspect” to open the Chrome developer tools. Once the dev tools are open, switch to the “Event Listeners” tab and you will see all the event listeners bound to the element. You can expand any event listener by clicking the right-pointing arrowhead.
There are two ways of event propagation in the HTML DOM, bubbling and capturing.
To connect multiple events to a single event handler in C#Click the name of the event that you want to handle. In the value section next to the event name, click the drop-down button to display a list of existing event handlers that match the method signature of the event you want to handle.
The EventHandler delegate is a predefined delegate that specifically represents an event handler method for an event that does not generate data. If your event does generate data, you must use the generic EventHandler<TEventArgs> delegate class.
The event keyword was explicitly invented to prevent you from doing what you want to do. It makes the delegate object for the event inaccessible so nobody can mess with the events handlers.
Source : How to dermine if an event is already subscribed
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