I want to create an inherited control from WebMonthCalendar. ( Custom server control)

The enhancement, is that I add a client event:

  <ClientEvents RenderDay="WebMonthCalendar1_RenderDay"        />

How do I add this code to my custom control?

I do it, because I dont want to add this code, on every page, for each WebMonthCalendar,

but I want to use my own Custom control.