Server-side controls repositing long client forms to top

=?Utf-8?B?TmV0d29yeHBybw==?=

Whenever an ASP.NET server-side control is processed, the client form is
repainted from the top forcing users to scroll back to where they were on
long forms. How can I work around this issue?

For example run this, scroll down and click the left check box:

<%@ Page Language=vb %>
<html>
<script runat=server>
Sub Test(ByVal sender As System.Object, ByVal e As System.EventArgs)
Box2.Checked = Box1.Checked
End Sub
</script>

<body>
<form id="Form1" method="post" runat="server">
<TABLE>
<TR><TD height=1500 bgcolor=red></TD></TR>
<TR>
<TD>
<asp:CheckBox id=Box1 runat="server" AutoPostBack=True
OnCheckedChanged=Test></asp:CheckBox>
</TD><TD>
<asp:CheckBox id=Box2 runat="server"></asp:CheckBox>
</TD>
</TR>
</TABLE>
</form>
</body>
</html>

Sep 7 '07 #1

Subscribe Post Reply

1698

=?Utf-8?B?UGV0ZXIgQnJvbWJlcmcgW0MjIE1WUF0=?=

Just set the MaintainScrollPositionOnPostback directive to True, either on
the page-level or in Web.config if you want it to apply to all pages in the
website. For a single page, update the <% @Page directive so that it looks
lkike:

<%@ Page Language="..." MaintainScrollPositionOnPostback="true" ... %>
To apply the setting to all pages in the website, add the following to the
Web.config file (within the <system.webelement):

<pages maintainScrollPositionOnPostBack="true" />
-- Peter
Recursion: see Recursion
site: http://www.eggheadcafe.com
unBlog: http://petesbloggerama.blogspot.com
BlogMetaFinder: http://www.blogmetafinder.com

"Networxpro" wrote:

Whenever an ASP.NET server-side control is processed, the client form is
repainted from the top forcing users to scroll back to where they were on
long forms. How can I work around this issue?

For example run this, scroll down and click the left check box:

<%@ Page Language=vb %>
<html>
<script runat=server>
Sub Test(ByVal sender As System.Object, ByVal e As System.EventArgs)
Box2.Checked = Box1.Checked
End Sub
</script>

<body>
<form id="Form1" method="post" runat="server">
<TABLE>
<TR><TD height=1500 bgcolor=red></TD></TR>
<TR>
<TD>
<asp:CheckBox id=Box1 runat="server" AutoPostBack=True
OnCheckedChanged=Test></asp:CheckBox>
</TD><TD>
<asp:CheckBox id=Box2 runat="server"></asp:CheckBox>
</TD>
</TR>
</TABLE>
</form>
</body>
</html>

Sep 7 '07 #2

=?Utf-8?B?TmV0d29yeHBybw==?=

Thanks, but unfortunately this site is running .NET Framework 1.1 and
MaintainScrollPositionOnPostback is new in 2.0

Any other suggestions?

"Peter Bromberg [C# MVP]" wrote:

Just set the MaintainScrollPositionOnPostback directive to True, either on
the page-level or in Web.config if you want it to apply to all pages in the
website. For a single page, update the <% @Page directive so that it looks
lkike:

<%@ Page Language="..." MaintainScrollPositionOnPostback="true" ... %>
To apply the setting to all pages in the website, add the following to the
Web.config file (within the <system.webelement):

<pages maintainScrollPositionOnPostBack="true" />
-- Peter
Recursion: see Recursion
site: http://www.eggheadcafe.com
unBlog: http://petesbloggerama.blogspot.com
BlogMetaFinder: http://www.blogmetafinder.com

"Networxpro" wrote:

Whenever an ASP.NET server-side control is processed, the client form is
repainted from the top forcing users to scroll back to where they were on
long forms. How can I work around this issue?

For example run this, scroll down and click the left check box:

<%@ Page Language=vb %>
<html>
<script runat=server>
Sub Test(ByVal sender As System.Object, ByVal e As System.EventArgs)
Box2.Checked = Box1.Checked
End Sub
</script>

<body>
<form id="Form1" method="post" runat="server">
<TABLE>
<TR><TD height=1500 bgcolor=red></TD></TR>
<TR>
<TD>
<asp:CheckBox id=Box1 runat="server" AutoPostBack=True
OnCheckedChanged=Test></asp:CheckBox>
</TD><TD>
<asp:CheckBox id=Box2 runat="server"></asp:CheckBox>
</TD>
</TR>
</TABLE>
</form>
</body>
</html>

Sep 7 '07 #3

bruce barker

just do the same logic. in clientscript, in onsubmit, store the x & y in
a hidden fields. then on postback render if x & y are filled in, render
client script to set the scroll position.

-- bruce (sqlwork.com)

Networxpro wrote:

Thanks, but unfortunately this site is running .NET Framework 1.1 and
MaintainScrollPositionOnPostback is new in 2.0

Any other suggestions?

"Peter Bromberg [C# MVP]" wrote:

>Just set the MaintainScrollPositionOnPostback directive to True, either on
the page-level or in Web.config if you want it to apply to all pages in the
website. For a single page, update the <% @Page directive so that it looks
lkike:

<%@ Page Language="..." MaintainScrollPositionOnPostback="true" ... %>
To apply the setting to all pages in the website, add the following to the
Web.config file (within the <system.webelement):

<pages maintainScrollPositionOnPostBack="true" />
-- Peter
Recursion: see Recursion
site: http://www.eggheadcafe.com
unBlog: http://petesbloggerama.blogspot.com
BlogMetaFinder: http://www.blogmetafinder.com

"Networxpro" wrote:

>>Whenever an ASP.NET server-side control is processed, the client form is
repainted from the top forcing users to scroll back to where they were on
long forms. How can I work around this issue?

For example run this, scroll down and click the left check box:

<%@ Page Language=vb %>
<html>
<script runat=server>
Sub Test(ByVal sender As System.Object, ByVal e As System.EventArgs)
Box2.Checked = Box1.Checked
End Sub
</script>

<body>
<form id="Form1" method="post" runat="server">
<TABLE>
<TR><TD height=1500 bgcolor=red></TD></TR>
<TR>
<TD>
<asp:CheckBox id=Box1 runat="server" AutoPostBack=True
OnCheckedChanged=Test></asp:CheckBox>
</TD><TD>
<asp:CheckBox id=Box2 runat="server"></asp:CheckBox>
</TD>
</TR>
</TABLE>
</form>
</body>
</html>

Sep 7 '07 #4

=?Utf-8?B?TmV0d29yeHBybw==?=

Thanks Bruce & Peter.

Your tips and a search led me to a couple of simple solutions that I can
easily apply to our various webforms:

Steve Stchur's "Maintaining Scroll Position on Postback"
http://aspnet.4guysfromrolla.com/articles/111704-1.aspx

Ibrahim Uludag's "Crossbrowser SmartNavigation Alternatives"
http://www.codeproject.com/aspnet/lili2.asp

Thanks for the help!
Networxpro

"bruce barker" wrote:

just do the same logic. in clientscript, in onsubmit, store the x & y in
a hidden fields. then on postback render if x & y are filled in, render
client script to set the scroll position.

-- bruce (sqlwork.com)

Networxpro wrote:
Thanks, but unfortunately this site is running .NET Framework 1.1 and
MaintainScrollPositionOnPostback is new in 2.0

Any other suggestions?

"Peter Bromberg [C# MVP]" wrote:

Just set the MaintainScrollPositionOnPostback directive to True, either on
the page-level or in Web.config if you want it to apply to all pages in the
website. For a single page, update the <% @Page directive so that it looks
lkike:

<%@ Page Language="..." MaintainScrollPositionOnPostback="true" ... %>
To apply the setting to all pages in the website, add the following to the
Web.config file (within the <system.webelement):

<pages maintainScrollPositionOnPostBack="true" />
-- Peter
Recursion: see Recursion
site: http://www.eggheadcafe.com
unBlog: http://petesbloggerama.blogspot.com
BlogMetaFinder: http://www.blogmetafinder.com

"Networxpro" wrote:

Whenever an ASP.NET server-side control is processed, the client form is
repainted from the top forcing users to scroll back to where they were on
long forms. How can I work around this issue?

For example run this, scroll down and click the left check box:

<%@ Page Language=vb %>
<html>
<script runat=server>
Sub Test(ByVal sender As System.Object, ByVal e As System.EventArgs)
Box2.Checked = Box1.Checked
End Sub
</script>

<body>
<form id="Form1" method="post" runat="server">
<TABLE>
<TR><TD height=1500 bgcolor=red></TD></TR>
<TR>
<TD>
<asp:CheckBox id=Box1 runat="server" AutoPostBack=True
OnCheckedChanged=Test></asp:CheckBox>
</TD><TD>
<asp:CheckBox id=Box2 runat="server"></asp:CheckBox>
</TD>
</TR>
</TABLE>
</form>
</body>
</html>

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Server-side controls repositing long client forms to top

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