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How to get Click event to work with checkbox

Posted By:      Posted Date: August 26, 2010    Points: 0   Category :ASP.Net

I am new to ASP.Net and I'm having trouble figuring out what needs to be where in my code.  I have a webform with 2 listboxes and 2 checkboxes... When I check checkbox1 I want listbox1 to be disabled and checkbox2 to be disabled.  Similarly, when I check checkbox2 I want listbox2 to be disabled and checkbox1 to be disabled.  The code does not show any errors; however, when I run the Page everything appears as it is supposed to but when I check the boxes, nothing happens.  What am I missing that will link the code on the .aspx.vb page to the objects on the .aspx page and make them work together?

Here is my code for Page1.aspx.vb:

Public Class LCPage1
    Inherits System.Web.UI.Page

    Protected Sub AllClients_Click(ByVal sender As ObjectByVal e 

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