Reset scroll position

>I hope someone has an answer: MaintainScrollPositionOnPostback works great.
>But, the problem is that sometimes we need to manually reset the scroll
>position back to the top (such as when hiding a panel and displaying
>different panel).
>
1) Temporarily setting MaintainScrollPositionOnPostbox=False in the
postback event *seems* to work... but it's not the right answer as it
messes up any subsequent event postbacks.
2) Registering a startup script (window.scrollTo(0,0);) doesn't work
because ASP.NET puts its own scroll logic after it.
>
Basically we need a way to do something like Page.SetScroll(0,0) to
manually override the values saved by the MaintainScrollPositionOnPostback
feature. Any ideas?
>
--
-C. Moya
www.cmoya.com
>

I hope someone has an answer: MaintainScrollPositionOnPostback works great.
But, the problem is that sometimes we need to manually reset the scroll
position back to the top (such as when hiding a panel and displaying
different panel).
>
1) Temporarily setting MaintainScrollPositionOnPostbox=False in the postback
event *seems* to work... but it's not the right answer as it messes up any
subsequent event postbacks.
2) Registering a startup script (window.scrollTo(0,0);) doesn't work because
ASP.NET puts its own scroll logic after it.

Basically we need a way to do something like Page.SetScroll(0,0) to manually
override the values saved by the MaintainScrollPositionOnPostback feature.
Any ideas?

Startup scripts are added to the bottom of the page. The body.onload event
(JavaScript) will occur even after that. So I think that you should try
and add the "window.scrollTo" code in the body onload event.
>
To do this, you can add runat="server" to the body tag, give it an ID, and
then in the code behind use the "Attributes" collection. I didn't test but
I think it should work.
>

No, scratch that - I've found a better way! :)
>
Include this JS function in your page:
>
function resetDotNetScrollPosition()
{
var scrollX = document.getElementById('__SCROLLPOSITIONX');
var scrollY = document.getElementById('__SCROLLPOSITIONY');
>
if(scrollX != null && scrollY != null)
{
scrollX.value = 0;
scrollY.value = 0;
}
}
>
then in whichever server event you need to reset the scroll position,
register it as a startup script:
>
Page.ClientScript.RegisterStartupScript(Page.Clien tScript.GetType(),
Page.ClientID, "resetDotNetScrollPosition();", true);
>
..it works because this startup script gets inserted *before* ASP.NET's
calls to restore the scroll position, so it ends up restoring the scroll
position to 0,0. Here is the generated HTML from the end of my page:
------------------------------------------------
>
resetDotNetScrollPosition(); << LOOK!
>
theForm.oldSubmit = theForm.submit;
theForm.submit = WebForm_SaveScrollPositionSubmit;
>
theForm.oldOnSubmit = theForm.onsubmit;
theForm.onsubmit = WebForm_SaveScrollPositionOnSubmit;
>
theForm.oldOnLoad = window.onload;
window.onload = WebForm_RestoreScrollPosition;
>
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