Pass parameter to EventHandler

Question

I have the following EventHandler to which I added a parameter MusicNote music   public void PlayMusicEvent object sender  EventArgs e MusicNote music        music player Stop        System Timers Timer myTimer    System Timers Timer sender      myTimer Stop        I need to add the handler to a Timer like so   myTimer Elapsed    new ElapsedEventHandler PlayMusicEvent this  e  musicNote      but get the error        Method name expected    EDIT  In this case I just pass e from the method which contains this code snippet  how would I pass the timer s own EventArgs

User · Accepted Answer

Timer Elapsed expects method of specific signature  with arguments object and EventArgs   If you want to use your PlayMusicEvent method with additional argument evaluated during event registration  you can use lambda expression as an adapter   myTimer Elapsed    new ElapsedEventHandler  sender  e    gt  PlayMusicEvent sender  e  musicNote      Edit  you can also use shorter version   myTimer Elapsed     sender  e    gt  PlayMusicEvent sender  e  musicNote

User · Answer

If I understand your problem correctly  you are calling a method instead of passing it as a parameter  Try the following   myTimer Elapsed    PlayMusicEvent    where  public void PlayMusicEvent object sender  ElapsedEventArgs e        music player Stop        System Timers Timer myTimer    System Timers Timer sender      myTimer Stop        But you need to think about where to store your note

[c#] Pass parameter to EventHandler

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