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AsyncFileUpload, can't refresh page after upload is completed

I have an Ajax AsyncFileUpload on one of my pages (inside a update panel). The control works, however I want the page to reload after the upload is complete. I tried a Response.Redirect in the code behind for the OnUploadedComplete method and a location.reload(true) in the OnClientUploadComplete. Both result in javascript alert of `Server Response Error: 'Unknown Server error'
Do you want to see the response page?` and the page doesn't refresh.
Has anyone been able to do a full page refresh after the upload has completed?
Edit: I mistakenly said the AsyncFileUpload is in a control panel, I meant to say update panel.

Use asp:FileUpload control and register it as postback control with Scriptmanager's RegisterPostBackControl method. Or add postback trigger entry for this FileUpload to Triggers collection of UpdatePanel

This control panel that you told. Is this a UpdatePanel? If it is, you can try an upd.Update(); to refresh the panel.

Becareful, if you have Response on your backside you may be ending your page's life cycle right there. This is just a guess. Check to make sure that your code is even reaching the intended point. Look for things like Response.End which will will prevent anything thereafter from executing.

why is label.Text set in the server but doesn't change on the webpage?

I want the server to desplay some text on a webpage.
I defined
<asp:Label id="label1" runat="server" />
and set
protected void Button1_Click(object sender, EventArgs e)
{
label1.Text = "bla";
timer = new System.Threading.Timer(new TimerCallback(DoSomething), null, 0, 10000);
}
private void DoSomething(object obj)
{
label1.Text = "bla 1";
}
bla is presented, but not bla1.
When I debug I see the "bla 1" line is executed.
Where do I do wrong?

By the time DoSomething() gets executed, the response has already been sent to the browser, and your code does nothing. Actually, I'm surprised you don't crash the app domain with it.
You should not attempt to use threading primitives like this in an asp.net application.
If you want to update the value sometime "later" than the initial page displaying, you'll need to look at Ajax.

I would think that the new timer doesn't complete before the page response is sent. The thread is probably throwing an error and just shutting down.

You can't asynchronously change a label in another thread like that, once the response is sent back to the browser then nothing you do on the server will make any difference. You will need to do client side ujpdates using javascript.

ASP.Net runs the code on the server and spits the result back to the browser, once this is completed nothing that happens on the server will have any affect on the html in the browser.

The reason is when you click the button the request/response process occurs.
Your thread is not refreshing the page or its fragment in any way.
Possibly you can achieve required result with websockets or ajax long pooling - with comet.

How do I generate JavaScript during an AJAX callback (postback) and then execute it on the browser?

In summary:
I have an ASP.NET web page that causes an AJAX postback to the server. When this event handler runs (in the code behind) it will generate some JavaScript that I then want to run in the client. Not sure how to achieve this.
In Detail:
I have an ASP.NET web page with multiple items displayed on the page.
As a "nice to have", I want to display either a green circle or a red cross next to each item (these differ depending upon each item). Since it isn't vital for the User to see these icons and also because it takes several seconds to work out which icon should be shown for each item, I want to perform this after the page has loaded, so in an AJAX callback.
My thought therefore was this. When creating the page, I would create both icons next to each object and create them with the style of "hidden". I would also make a note of each one's client ID.
Then, when the callback occurs, I fetch the necessary data from the database and then create a JavaScript function that changes the display for each of the icons I want to show from "hidden" to "visible".
I thought I could achieve this using the ScriptManager object.
Here's a very trivial version of my server side code (C#)
void AjaxHandler(object sender, EventArgs e)
{
// call to database
string jscript = "alert('wibble');";
ScriptManager.RegisterStartupScript(this, this.GetType(), "uniqueKey", jscript);
}
Obviously, here I'm just trying to get an alert to fire after the postback has occurred...in real life I'd have my JavaScript function to change the display of all the icons I want to display.
When I run this, the serverside code runs and yet nothing happens in the server.
I have also tried:
ScriptManager.RegisterClientScriptBlock()
Page.RegisterStartupScript()
Page.RegisterClientScriptBlock()
Page.ClientScript.RegisterStartupScript()
Page.ClientScript.RegisterClientScriptBlock()
but none of them work....
FireFox shows the following JavaScript error:
Error: uncaught exception: [Exception... "Node cannot be inserted at the specified point in the hierarchy" code: "3" nsresult: "0x80530003 (NS_ERROR_DOM_HIERARCHY_REQUEST_ERR)" location: "http://localhost/MyWebSiteName/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d3.5.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a3de828f0-5e0d-4c7d-a36b-56a9773c0def%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2009.3.1314.20%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3aec1048f9-7413-49ac-913a-b3b534cde186%3a16e4e7cd%3aed16cbdc%3a874f8ea2%3af7645509%3a24ee1bba%3a19620875%3a39040b5c%3af85f9819 Line: 1075"]
Does anyone know if what I am trying to do is even allowed?
If not - what's my alternative?
Thank you

Since your script doesn't have enclosing <script> tags, you need to use this form of RegisterStartupScript:
ScriptManager.RegisterStartupScript(this, this.GetType(), "uniqueKey", jscript, true);

You said your initial goal was:
The idea was that the page would load, data would be sent (AJAX) to the server. The server would then generate some JavaScript based upon this data and send that back to the page. That JavaScript would then run updating the page in a specific way.
Here's a way you can do that:
given:
<asp:ScriptManager runat="server" ID="scriptManager">
</asp:ScriptManager>
<script type="text/javascript">
function endRequestHandler(sender, args) {
var dataItems = args.get_dataItems();
for(var key in dataItems){
if(/^javascript:/.test(dataItems[key])){
eval(dataItems[key].substring("javascript:".length));
}
}
}
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(endRequestHandler);
</script>
<asp:UpdatePanel runat="server" ID="pnl">
<ContentTemplate>
<asp:Button runat="server" ID="btnClick" Text="Click me!" OnClick="btnClick_Click" />
</ContentTemplate>
</asp:UpdatePanel>
You can create a click handler that does this:
protected void btnClick_Click(object sender, EventArgs e)
{
ScriptManager.GetCurrent(Page).RegisterDataItem(this, "javascript:alert('hello world!');");
}
What's happening is during the postback, the page request manager is sent a data item your code-behind. That data-item happens to be a javascript command. After the postback, the client side script manager's endRequest handler is checking for data items. Normally you'd want to see who those items are for, which is apparent by the key of the item (it's the client ID of the control that is the target of the data being sent). In your case, you could load this up with the javascript that you want to fire, tell yourself that it's a javascript because it's prepended, then dynamically evaluate the script.
So in this example, clicking the "Click Me!" button will generate a Hello World prompt whose script was actually created by the code-behind during the postback.
You'll have to be very cautious with this approach until you're comfy - I'd avoid references to "this"...
Happy coding.
B

Okay
The idea was that the page would load, data would be sent (AJAX) to the server. The server would then generate some JavaScript based upon this data and send that back to the page. That JavaScript would then run updating the page in a specific way.
Couldn't get that to work....
I got around this in the following way:
When the page loads, data is sent (AJAX) to the server. This processes the data and serialises the results updating a hidden text element, which goes back to the browser. Meanwhile, I have a JavaScript timer on the page that runs a JavaScript function that was generated when the page first loads. This function looks at the hidden text element. If that element has text (the result of the postback) then it shuts down the timer, deserialises the data and then works out how to update the page.

Update PageTitle on Timer.Tick

I've got a page with a Timer that is being used as a trigger on an UpdatePanel. The page also contains a TabContainer and several TabPanels. Look at this question for more information. Basically, I've got an UpdatePanel as the element in each TabPanel's ContentTemplate, and the UpdatePanel is triggered by the Timer.
My page displays data by reading a database on each tick. I've got the following code running on each Timer.Tick in my codebehind:
protected void timeRefresher_Tick(object sender, EventArgs e)
{
UpdateLivePageTitle();
}
The UpdateLivePageTitle() function reads the new information from the database and sets Page.Title accordingly. However, this information is of course not sent to the browser because there is no full page postback--only an async postback to the update panels. As a result, my page title is not being updated until the whole page is being posted back, which destroys the purpose of using UpdatePanels in the first place.
I figure there would be a way to do this by using the document.title JS element and call that from within UpdateLivePageTitle(). But as of now, I haven't been able to figure out how to do this. I tried using the following in my UpdateLivePageTitle() function:
string updatePageTitleScript = String.Format("document.title = '{0}'", newPageTitle);
ToolkitScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "UpdatePageTitle", updatePageTitleScript, true);
But the result of this was that my TabContainer stopped rendering. I'm also not sure that would work with the async partial page postbacks, either. Any ideas?
Thanks!

You forgot the ; from your script.
Oh, and if I remember correctly, the framework should be able to update the title if you just set Page.Title.

UpdateProgress with UpdatePanel not showing up in User control when page is loading

Is this typical behavior of the UpdateProgress for an ASP.Net UpdatePanel? I have an update panel with the UpdateProgress control inside of a user control window on a page.
If I then make the page in the background do some loading and click a button in the user control update panel the UpdateProgress does not show up at all. It's like the UpdatePanels refresh request is not even registered until after the actual page is done doing it's business. It's worth noting that it will show up if nothing is happening in the background.
The functionality I want is what you would expect. I want to loader to show up if it has to wait for anything to get it's refresh done when after the button is clicked.
I know I can get this functionality if I just use jquery ajax with a static web method, but you can't have static web methods inside of a user control. I could have it in the page but it really doesn't belong there. A full-blown wcf wouldn't really be worth it in this case either. I'm trying to compromise with an UpdatePanel but these things always seem to cause me some kind of trouble.
Maybe this is just the way it works?
Edit:So I'll clarify a bit what I'm doing.
What's happening is I have a page and all it has on it are some tools on the side and a big map. When the page initially loads it takes some time to load the map. Now if while it's loading I open up the tool (a user control) that has the update panel in question in it and click the button on this user control that should refresh the update panel with new data and show the loading sign (in the updateprogress) then the UpdateProgress loading image does not show up. However, the code run by the button click does run after the page is done loading (as expected) and The UpdateProgress will show up if nothing on the page containing the user control is loading.
I just want the loader to show up while the page is loading.
I thought my problem was that perhaps the map loading is in an update panel and my UpdateProgress was only being associated with the update panel for the user control's update panel. Hence, I would get no loading icon when the map was loading. This is not the case though.

I'm not completely following exactly what you're doing here, but I'm assuming you've taken what's in your user control and verified that it works correctly if placed directly in the page?
As a side note, I'm personally ripping out UpdatePanels and replacing with jQuery replacements due to the significant performance savings in addition to the fact that it's way more time-effective to figuring out jQuery et al. quirks instead of ASP.NET AJAX quirks. To be honest, I wish I could claw back the time I did invest in UpdatePanels/ASP.NET AJAX.

I believe I understand your issue after reading your OP several times. I have run into this situation myself with difficulty getting an UpdateProgress to work on Page_Load. The solution? Don't fire the server-side event initially on Page_Load. Add an AJAX Timer that is inside an UpdatePanel like below:
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Timer ID="ajxTmr1" runat="server" Interval="1000" OnTick="ajxTmr1_Tick" />
</ContentTemplate>
</asp:UpdatePanel>
The on the timer tick event, do your server code as required. If you have an Update Progress wired up to the UpdatePanel above, everything should work properly.
<asp:UpdateProgress ID="UpdateProgress1" runat="server" DisplayAfter="0" AssociatedUpdatePanelID="UpdatePanel1" Visible="false">
<%--Panel or whatever goes here--%>
</asp:UpdateProgress>