Event handlers in BasePage Class

sophia · September 8th, 2011, 02:03 PM

Hi Imar,

I have created a Base Page and hooked many pages up on it. But one thing that makes me ask here is that why we need event handler in c# in this base page class for any page related events like Page_Load, Page_PreInit etc. as we do not need any event handler in master page, standard aspx page, user controls still using c#?

Imar · September 8th, 2011, 02:11 PM

It's because the compiler hooks up known events for you. Take a look at the Page directive in the aspx page and look for the AutoEventWireup attribute to see how this works. Change it to false, and you'll need to do the same thing in a regular aspx or master page.

Cheers,

Imar

sophia · September 8th, 2011, 02:45 PM

Thanks again

I got the difference. But in case of VB it is false already then in base class how it works fine?

Imar · September 8th, 2011, 03:37 PM

VB uses the Handles keyword, both in the BasePage as well as in the ASPX pages. If you'd turn the attribute to True (while still having Handles in the code behind) you'll find that the events fire twice.

Cheers,

Imar

sophia · September 8th, 2011, 03:54 PM

Hi, Now I got picture clear.
Thanks