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//Define a custom EventArgs class to contain your data.
public class MyEventArgs : EventArgs
{
public string info = "data";
}

//Declare the event as visible to users of the class

public event EventHandler<MyEventArgs> MyEvent;

//Send the event, note that this will throw a nullref if there are no subscribers

//Internal version prevents outsiders from needing to know about the contents of MyEventArgs
protected virtual void InternalSendMyEvent(CustomEventArgs e)
{
if(MyEvent != null)
{
e.info = "Hello Events!";
//This calls all registered subscribers with the following parameters.
MyEvent(this, e);
}
}

//Public version to allow outsiders to trigger the event, not typical implementation.
public void CreateEvent()
{
InternalSendMyEvent(new MyEventArgs());
}

//Consumer
//Register the Handler

eventRaiser.MyEvent += new EventHandler<CustomEventArgs>(HandleEvent);

//Define the Handler
private void HandleEvent(object sender, MyEventArgs e)
{
MessageBox.Show("Event handled:" + e.info);
}

//Cause the Event
eventRaiser.CreateEvent();

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