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ASP.NET - How do I autoscroll to the TOP of a user control upon postback?

Posted on 2005-05-06
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Last Modified: 2008-02-01
I know how to retain the relative page position, upon form submit, and autoscroll to that position upon postback (using javascript, not smartnavigation).

However, instead of retaining a specific position (for instance, in the middle of a long datagrid) I would like it to auto scroll to the top of the specific user control.

Does anyone know how to do this?  Thanks in advance!
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Question by:mannymartins
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LVL 35

Expert Comment

by:mrichmon
ID: 13946950
Could you use a html anchor in the page?  Or is that not what you are asking?
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Author Comment

by:mannymartins
ID: 13946983
well, if there's a way to autoscroll to a specified anchor upon postback, then i'd accept that.

the question would then become, how do i tell the browser to scroll to the anchor upon postback, after all, it's not the same as a redirect with the "#anchorname" in URL.
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Author Comment

by:mannymartins
ID: 14019085
hmm.. no replies in over a week.  does this mean it's just not possible, or too difficult to do?
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LVL 35

Accepted Solution

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mrichmon earned 375 total points
ID: 14019825
Sorry didn't get the first email that you had replied.

What about having it so that on postback you add the following javascript to the page that gets executed onLoad:

location.hash = 'myAnchor';

Then have an anchor at the point you want to jump to.
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Author Comment

by:mannymartins
ID: 14020897
yeah, i'm trying something like that now, but i haven't figured out how to register a script block to the page from within a usercontrol yet.  thanks for the reply!
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Author Comment

by:mannymartins
ID: 14021001
Ugh, why am I not thinking today... For whatever reason, I was trying "this.RegisterClientScriptBlock", where I should have been using "Page.RegisterClientScriptBlock".

Anyhow, a form of your idea is working partway now.  Specifically, I'm registering the following block to the page upon firing a command from the datagrid:
   <script language="JavaScript">
      location.href="#pageanchor";
   </script>

And for "pageanchor" I'm using the ID of the usercontrol.

mrichmon, you get the points since your answer closely resembles what works for me.  :)
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