Response.Redirect doesnt work with UpdatePanel in Beta 1

I have a page with an update panel that contains a few buttons that need to be able to redirect to another page. The script manager is located on a master page.

Every time one of those buttons are clicked, i get one of two errors:

If the button is inside of a gridview, i get this error:

Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed.

If the button is NOT inside of a gridview, i get this error:

Sys.WebForms.PageRequestManagerParserErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 302

Here's a test aspx page that I set up:

1<%@dotnet.itags.org. Page Language="VB" title="Untitled Page" MasterPageFile="~/main.master" AutoEventWireup="false" CodeFile="test.aspx.vb" Inherits="test" %>2<%@dotnet.itags.org. Register Assembly="Microsoft.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="Microsoft.Web.UI" TagPrefix="ajax" %>3<asp:Content ID="Content1" ContentPlaceHolderID="plhContent" Runat="Server">4 <ajax:UpdatePanel runat="server">5 <ContentTemplate>6 <asp:Label runat="server" ID="lblTime" /><br />7 <asp:Button runat="server" ID="btnRefresh" Text="Refresh" /><br />8 <asp:Button runat="server" ID="btnRedirect" Text="Redirect" /><br />9 <asp:LinkButton runat="server" ID="lnkRedirect" Text="ASP Linkbutton" /><br />10 <a href="http://www.google.com/" title="test redirect">HTML Hyperlink</a>11 </ContentTemplate>12 </ajax:UpdatePanel>13</asp:Content>

And here's the codebehind:

1PartialClass test2Inherits System.Web.UI.Page34Protected Sub Page_Load(ByVal senderAs Object,ByVal eAs System.EventArgs)Handles Me.Load5 lbltime.Text = now()6End Sub78 Protected Sub btnRedirect_Click(ByVal senderAs Object,ByVal eAs System.EventArgs)Handles btnRedirect.Click9 Response.Redirect("http://www.google.com/",True)10End Sub1112 Protected Sub btnRefresh_Click(ByVal senderAs Object,ByVal eAs System.EventArgs)Handles btnRefresh.Click13 lblTime.Text = Now()14End Sub1516 Protected Sub lnkRedirect_Click(ByVal senderAs Object,ByVal eAs System.EventArgs)Handles lnkRedirect.Click17 Response.Redirect("http://www.google.com/",True)18End Sub19End Class

The LinkButton causes the same error, so it's not just limited to the button control. It looks like it affect anything that posts back to the server and causes a redirect.

Thanks for any help you can give me!

We found this out today too. The fix is to pass a location.href back to user.

ScriptManager.RegisterStartupScript(pnlYourUpdatePanel,this.GetType(),"redirectMe","location.href='blah.aspx';",true);

Sorry it is in C#... Hope this helps.

hello.

i've just built a sample project with the following code:

master page:

<%@. Master Language="VB" %
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
<script runat="server"
</script
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:scriptmanager runat="server" ID="manager" />
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</div>
</form>
</body>
</html>

page:

<%@. Page Language="VB" MasterPageFile="~/MasterPage.master" Title="Untitled Page" %>
<script runat="Server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
lblTime.Text = Now()
End Sub

Protected Sub btnRedirect_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRedirect.Click
Response.Redirect("http://www.google.com/", True)
End Sub

Protected Sub btnRefresh_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRefresh.Click
lblTime.Text = Now()
End Sub

Protected Sub lnkRedirect_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles lnkRedirect.Click
Response.Redirect("http://www.google.com/", True)
End Sub
</script>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:updatePanel runat="server" id="panel">
<contenttemplate>
<asp:Label runat="server" ID="lblTime" /><br />
<asp:Button runat="server" ID="btnRefresh" Text="Refresh" /><br />
<asp:Button runat="server" ID="btnRedirect" Text="Redirect" /><br />
<asp:LinkButton runat="server" ID="lnkRedirect" Text="ASP Linkbutton" /><br />
<a href="http://links.10026.com/?link=http://www.google.com/" title="test redirect">HTML Hyperlink</a>
</contenttemplate>
</asp:updatePanel>
</asp:Content
everything is working here with the beta extensions. are you sure you've set up web.config correctly?

Luis,

When looking at the XMLHttpResponse google.com is being returned which is causing the parser error. Not sure how you are getting this to work with the Beta release?? Also, not sure how config would cause this?

Matt

hello.

well just recalled one problem i've seen before where the users updated the prefix but left it pointing to the old ctp dll which was still in the bin folder and it just blow everything apart. btw, here's what i'm getting back from the server side in response to a click over the redirect button (2nd one from the top):

22|pageRedirect||http://www.google.com/|

Luis Abreu:

everything is working here with the beta extensions. are you sure you've set up web.config correctly?

I think I do. I have a Microsoft.Web.Extensions assembly in the web.config. Is there aything else I need?

1<compilation debug="true" strict="false" explicit="true">2 <assemblies>3 <add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>4 <add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>5 <add assembly="Microsoft.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>6 </assemblies>7</compilation>

Luis Abreu:

well just recalled one problem i've seen before where the users updated the prefix but left it pointing to the old ctp dll which was still in the bin folder and it just blow everything apart.

I did delete the old CTP DLL, and added the new assembly registration to the top of the page:

1<%@. Register Assembly="Microsoft.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="Microsoft.Web.UI" TagPrefix="ajax" %>2

hello again.

can you confirm the response you're getting back from the server? is it similar to the one i've shown before?

How do I access the server response information?

hello.

use fiddler. if you're using ie, you must create a site in IIS and then use the name of the machine (http://machinename/site). if you're using firefox, configure it so that it uses a local proxy (127.0.0.1 port 8888 if i'm not mistaken).

It is definitely in the config. Again... good call Luis... you are missing these values in your config and this should cure the problem.

<httpModules><add name="WebResourceCompression" type="Microsoft.Web.Handlers.WebResourceCompressionModule, Microsoft.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/><add name="ScriptModule" type="Microsoft.Web.UI.ScriptModule, Microsoft.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/></httpModules>

Thank Luis for that one. =)
P.S. That is under httpHandlers

That worked! You guys are awesome.

Thanks!

Thanks - Guys!

I was experiencing the same problem in Beta 2, which this solution apparently resolved that issue.

Hi Guys!

I Got the Same error in my current project. I cant redirect to another page from inside the UpdatePanel. Finally I saw this forum and got a wonder result and answer. Its really amazing and thanks a lot for u all guys..

rgds,

Senthil

Retaining ViewState in Atlas

On my real estate website I have a Search page and a Results page. The Search page contains three linked Atlas cascading dropdowns (CDDs). The user makes some selections on these and then clicks a <search> button to see the results. This opens the Results page, which displays a list of properties meeting the search criteria. I have this working fine, apart from one thing: when the user goes back to the Search page, the CDDs have been reset to their original values. I was wondering if there was an easy way for the Search page to retain its settings. I have a partial solution, but it's not very good. If I set AutoPostBack to "True" for each CDD, they retain their settings when I click the <back> button on the browser. This is pretty horrible though, as it means the whole page gets posted back - undermining the whole purpose of using Atlas in the first place! I have tried enclosing the CDDs in an UpdatePanel (so that only they get posted back and not the whole page), but they just end up flickering all the time as (I guess) they get stuck in a code loop.

Also, setting AutoPostBack to "True" is only effective when the user clicks the browser's <back> button. I want to offer my own button or link in case they arrived at the Results page from another route. I have tried creating a hyperlink to the Search page, adding a button with a PostBackUrl of "Search.aspx" and adding a Response.Redirect command to a button's on_click event. Even with AutoPostBack set to "True" (which I want to avoid), none of these methods works. The CDDs just get reset every time.

Also, the other server controls I have on the Search page (check boxes, conventional drop-down list boxes, etc.) get reset every time too. I've tried looking into ViewState, but I can't get it to work. It looks like I need a way to save the viewstate on exit and somehow retrieve it when I load the page again. I guess I'm missing something fundamental. Any suggestions? Am I barking up the wrong tree? I imagine this kind of thing must have been done many times before and would appreciate a few hints.Any ideas on this? I'd really appreciate some help on something that must be a fairly common problem - or will be as Atlas takes off. Thanks for your interest.

You could try saving the viewstate to sessionstate or to disk

An example of saving viewstate to disk can be found here :
http://aspalliance.com/911

That seems to be on the right track. I'm now saving the values of my page controls to Session State when I exit the page, and retrieving them when I load it. This works fine for all the controls except the CDDs. Since these are populated by WebMethods, I don't seem to have any opportunity to set their SelectedValue properties. To focus on the problem area, I have tried adding a button to my form with a single line of code reading:ddlRegion.SelectedValue = RegionIDWhere RegionID is a value retrieved from the session.This causes an argument out of range exception as follows:[ArgumentOutOfRangeException: 'ddlRegion' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value]I get the same error if I change the variable RegionID to the literal "1" (which is definitely in the list).What it boils down to is this:How can I programatically set the SelectedValue of an Atlas Cascading Dropdown?I know how to save the value to, and retrieve it from, session state, but I don't know how to assign it to an Atlas cascading dropdown list. Any ideas?

1. Perest the CCD by setting the selected value of the cascading extender control ( and not the drop-down) , as explained in the article ( link )

2. and you can retrieve the viewsate ... as explained on this link.http://gandhirohan.blogspot.com/2007/09/cascadingdropdown-control.html

Rollovers with update panel not working?

Hello all,

I got a master page which containsjavascript generated by imageready for the rollover effect. I have acontent page which contains textbox, image button, updatepanel (Atlas)with Partial Rendering=True and gridview. Everything works fine in thebeginning. But once I sort, filter the grid view, the grid viewchanges as it should but now my rollovers don't work. I seems that thefunction that the onmouseover is not firing. I can still mess with thegridview that works fine. Oh yea the image button also has rolloverstate, that works but that is not calling the imageready function. Ithas inline javascript onmouserover="this.src='imgOver.gif';". I'malittle confused why the functions are not firing after the callback. Any ideas will be appreciated.

Thank YouPhotoshop's generated javascript uses a global boolean variable calledpreloadFlag. It sets this value to false globally, so I guess when a call back happens this line was being executed and sset back to false from being true. So none of the rollovers worked. I set it to true and the roll overs worked.

Hi boricua,

Here's a procedure you can adapt to your needs. Just call it for each ImageButton from the Page_Load. I've only tested this on IE 6, so let me know if it gives you any trouble.

ProtectedSub Page_Load(ByVal senderAsObject,ByVal eAs System.EventArgs)HandlesMe.LoadIfNot (Page.IsPostBack)Then

rollover3State(imgArrowLeft,

"ArrowLeft")
rollover3State(imgArrowRight,"ArrowRight")EndIfEndSubProtectedSub rollover3State(ByVal btnObjectAs ImageButton,ByVal baseImageAsString)

btnObject.Attributes.Add(

"onmouseout","{this.src='" &Me.ResolveUrl("App_Themes/" &Me.StyleSheetTheme &"/images/btn_" & baseImage &"_0.gif") &"';}")

btnObject.Attributes.Add(

"onmouseover","{this.src='" &Me.ResolveUrl("App_Themes/" &Me.StyleSheetTheme &"/images/btn_" & baseImage &"_1.gif") &"';}")

btnObject.Attributes.Add(

"onmousedown","{this.src='" &Me.ResolveUrl("App_Themes/" &Me.StyleSheetTheme &"/images/btn_" & baseImage &"_2.gif") &"';}")EndSub

Yeah this works. I used this method on some pages that I manually created, but for the ones that the html was created by imageready, which creates the javascript as well I fixed with the method I described earlier thank you dbDan.

RoundedCornerExtender and gridview do not match.

I created a cortrol that works ok except for the rounded corner on the panel that contains a gridview of selectable items.

i know it has to do with the size of the panel but the grid view will be different heights depending on the items returns for that page.

this one has to be a common problem.

Specificly the rounded corner bottom appears in the middle of the gridview.

Thanks!

KES

Hi,

You may specify the panel's height & width programmatically in the databound event of the GridView.

Thank you for responding

I know i can set the panel size and width the question is by how much? some lines wrap and other do not. I am really looking for a way to get the extender to reconize the current size of the panel as dictated by the objects populating it.

What about use percentage to represent the panle's width and height. For instance:

<%@. Page Language="C#" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"></script><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>Untitled Page</title></head><body> <form id="form1" runat="server"> <div> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager>    </div> <asp:Panel ID="Panel1" runat="server" Height="60%" Width="80%"> <asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1" Height="100%"> </asp:GridView> <ajaxToolkit:RoundedCornersExtender ID="RoundedCornersExtender1" runat="server" BehaviorID="RoundedCornersBehavior1" BorderColor="blue" TargetControlID="Panel1" Radius="6" Corners="All" /> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString%>" SelectCommand="SELECT [EmployeeID], [LastName], [FirstName], [Title], [TitleOfCourtesy] FROM [Employees]" ProviderName="<%$ ConnectionStrings:NorthwindConnectionString.ProviderName%>"> </asp:SqlDataSource> </asp:Panel> </form></body></html>