Question

How can we provide single generic method for collection of command buttons. I have collection of digit(0, 1,2..) command buttons and need to have single event method for all of them as they have similar behavior.

Answer 1

You can achieve this by Multicast Delegates

1. Define GenericButtonClick event handler this way:

   void OnGenenicButtonClick(object sender, EventArgs e)
   {
       var btn = sender as Button;
       // ... do something ...
   }
   

2. Assign the GenericButtonClick event delegate this way (in say Load event handler):

   cmdBtn1.Click += OnGenenicButtonClick;
   cmdBtn2.Click += OnGenenicButtonClick;
   //...
   

Reference:

• You can also have a look at the difference of Simple Delegate (delegate) vs. Multicast delegates