Is there anything wrong with using lambda for winforms event?

Question

This is a very simple question. I\'m asking because I\'ve never seen it before which makes me wonder if there\'s something wrong.

comboBox1.MouseEnter += (a         


        

Answer 1

This is perfectly acceptable, however, since these are anonymous delegates, there is no way to unsubscribe the event handler.

That is:

// Subscribe lambda as event handler
comboBox1.MouseEnter += (a, b) => comboBox1.Focus(); 

// Try to unsubscribe a _different_ lambda with identical syntax. 
// The first lambda is still subscribed
comboBox1.MouseEnter -= (a, b) => comboBox1.Focus(); 

Whether that is a problem or not depends on your application and use.