Fix for ASP .NET Web Forms acting 'buggy' after user presses 'back' button

I ran into this problem 
while creating a website that had a _change event coded.  It worked fine 
the first time through, but whenever the user hit the back button, the _change 
event would fire even though the user hadn't changed anything.</font></span></p>
<p><span lang="en-us"><font size="2">    I discovered the problem 
was NOT a bug.  Instead it is caused by a peculiar interaction between the 
ASP.NET view state mechanism (which allows pages to 'remember' your control 
states) and the browser's cache, which in my case was IE 6.0.<br>
<br>
    Basically, the browser overrode the HTML rendered by 
ASP.NET's view state mechanism with its cached contents.  This might be 
fine on old style ASP pages, but with ASP.NET web forms, the fact that the cache 
'remembered' the new setting of my control, forced the _change event to fire, 
even though the user hadn't selected it after hitting back.</font></span></p>
<p><span lang="en-us"><font size="2">    Once you understand the 
problem, the fix is simple, just disable the browser's caching as the first line 
in your Page Load.  You should do this for all ASP.NET form pages that have 
event handling.  Turning off caching won't affect performance, because 
these type of pages load dynamically every time, anyway.</font></span></p>
<p><span lang="en-us"><font size="2">   Hope this saves you some 
headaches!</font></span><BR>
<BR>
<b><font face="Courier New" size="2">Response.Cache.SetExpires(Now())
<br>
Response.Cache.SetCacheability(HttpCacheability.NoCache)</b><BR>