How to call the event of dynamically created button

i am sure there is more good ways to do this. But i use below code to do this.

This is for calling a javascript function.

Button btn = new Button();
btn.Text = "click";
btn.Attributes.Add("onclick", "call_csharp_function()");

in your javascript

 function call_csharp_function(){
   <%=csharp_function_name()%>
}