Retain scroll-position of a listbox

[Guest]

I have on a site some very populated listboxes, now, when the user scrolls
the listbox to chose some items, and then clicks a button, thus, a postback
starts, the scoll position of the listbox is reseted.

Is there a way to keep the scroll position? Is the functionality build in,
or, is additional javascript needed?

 

[Chris Fulstow]

I think these two page properties only apply to the main page
scrollbar, but might be worth checking anyway:

SmartNavigation
http://msdn2.microsoft.com/en-US/library/system.web.ui.page.smartnavigation(VS.80).aspx

MaintainScrollPositionOnPostBack (.NET 2.0)
http://msdn2.microsoft.com/en-us/library/b0eaf8ew(vs.80).aspx

Chris

 

[Aytaç ÖZAY]

Hi,

Yes, there is a way. Bu t you must coded it Before you click a button, you
must Store the selectedindex(listbox's) in a session, then the postback
starts. After that in page load method, you can set the selectedindex from
the session's value.

Have a nice work,

Aytaç ÖZAY
Software Developer


"the friendly display name"

 

[Chris Fulstow]

Maybe something like this (C#) using some JavaScript:

string position = "n";
string scrollScript="" ;
scrollScript += "<script language='javascript'>";
scrollScript += "document.forms[0].ListBox1.selectedIndex = " +
position + ";";
scrollScript += "<" + "/" + "script>";

Page.RegisterStartupScript("", scrollScript);