Search results matching tag 'udpdatepanel'

Asynchronous post back issue

abasheer — Wed, 09 Dec 2009 05:00:00 GMT

We recently updated our application with latest Ajax 3.0.30930.0 and implemented tab control, HTML editor and combo boxes in our application and its all working fine in our development environment; after deploying application into our server asynchronous call is not working it is doing a complete page post back. But the asynchronous call is working fine on IE version 7. We have already updated .NET 3.5 SP1 on our server, Could any one clarify what can be done to solve this.

Thanks

Basheer

Asynchronous post back for migrated application

abasheer — Tue, 24 Nov 2009 05:00:00 GMT

Hi,

I have migrated application from .NET 1.1 to 3.5 to facilitate our application with latest Ajax features.

I have a small application one dropdown and text box, I am just assigning selected value of the dropdown into a textbox on selected index change event of dropdown.

My form exactly looks as below

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm1.aspx.vb" Inherits="SimpleAppl.WebForm1"%>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<HTML>

<HEAD>

<title>WebForm1</title>

</HEAD>

<asp:Label ID="lblTime" runat="server"></asp:Label>

<asp:ScriptManager ID="scrMgr1" runat="server">

</asp:ScriptManager>

<asp:UpdatePanel ID="updPnl1" runat="server">

<asp:AsyncPostBackTrigger ControlID="DropDownList1" EventName="SelectedIndexChanged" />

</Triggers>

<asp:DropDownList id="DropDownList1" style="Z-INDEX: 101; LEFT: 256px; POSITION: absolute; TOP: 80px"

runat="server" Width="144px" AutoPostBack="True">

<asp:ListItem Value="Test1">Test1</asp:ListItem>

<asp:ListItem Value="Test2">Test2</asp:ListItem>

<asp:ListItem Value="Test3">Test3</asp:ListItem>

</asp:DropDownList>

<asp:TextBox id="TextBox1" style="Z-INDEX: 102; LEFT: 256px; POSITION: absolute; TOP: 112px"

runat="server" Width="144px" Height="32px"></asp:TextBox>

</ContentTemplate>

</asp:UpdatePanel>

</form>

</body>

</HTML>

And the code behind

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

'Put user code to initialize the page here

lblTime.Text = Now

End Sub

Private Sub DropDownList1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged

Me.TextBox1.Text = Me.DropDownList1.SelectedValue

End Sub

But the strange thing happens is asynchronous post back is not happening; it is doing complete page post back. I have checked all the possibilities but no luck. I feel it is because of the migration.

Any body could help out in this is highly appreciated as I already spent lot of time on this.. and running short in time to deliver this.

ScriptResource.axd errors

azpcc — Mon, 15 Jun 2009 04:00:00 GMT

I'm experiencing something I've never seen before, and something that doesn't seem to be dicsussed on the internet. I have an AJAX web site that is designed to run continuously, 24 hours a day. Something that employees can walk past and review, then move on. It refreshes itself based on a timer control set to refresh every 10 seconds. OnTick, the timer calls a C# method that simply updates an UpdatePanel control on the page. Now, randomly, but every 48 hours it seems, the javascript crashes and throws a unique error each time, but all related to ScriptResource.axd. Some examples are:

Message: 'this._xmlHttpRequest' is null or not an object
Line: 5200
Char: 9
Code: 0
URI: http://webapps/bjr/ScriptResource.axd?d=GogRU2uvfZZxVcSgcX_fTg6zFz76FDJs7m2FLRgB7MAkqOOLSZsVm-IfwVeTOrkCcJpmu_kwJivaVgB4RjObtxdQey8RwXjLaA_gO_bsuqk1&t=633549133346786994

Message: 'method' is null or not an object
Line: 61
Char: 9
Code: 0
URI: http://webapps/bjr/ScriptResource.axd?d=GogRU2uvfZZxVcSgcX_fTg6zFz76FDJs7m2FLRgB7MAkqOOLSZsVm-IfwVeTOrkCcJpmu_kwJivaVgB4RjObtxdQey8RwXjLaA_gO_bsuqk1&t=633549133346786994

Message: 'parameterArray' is null or not an object
Line: 140
Char: 9
Code: 0
URI: http://webapps/bjradmin_dev/ScriptResource.axd?d=hCrKQu2tYm9z1ADb8DKK4lMjuP3nEOJuHL5ktHfOjXCJvB-MPxhhyDy_smhIUHqtRFjlZ4hWqoJHZZ47r-QrG47c_T1Iyo0SKPIetlTHW0k1&t=633549133346786994

So far, I tried reducing the number of asynch postbacks by lengthening the timer to 30 minutes and 1 hour, but the problem persisted. I then tried changing the C# method to just reload the website every 10 seconds instead of just reloading the updatepanel, but still no good. I've had my head buried in this problem for so long, I need a fresh set of eyes to help me identify what causes this and how to work around it. Ultimately, I need the website to be running on a single workstation continuously, and refreshing an UpdatePanel asynchronously on a fixed interval. Your thoughts?

FileUpload not working when used with Update Panel and Multiview

kevinandrew — Mon, 20 Apr 2009 04:00:00 GMT

Hi,

I have a multiview control inside a update panel. In my sample page, the first view has just a button(In real time has lots of controls). On clicking this button I show the second view which has a asp file upload and a button. When I click the file upload button, I am unable to get that file in the server side. When I dont have multiview, everything works fine since I have postback triggers in the form. I am really confused why setting the active view index of the multiview control is causing the issue..Please help... Here is the code what I have

<asp:UpdatePanel ID="upd" runat="server">
<ContentTemplate>
<asp:MultiView runat="server" ID="vwFile">
<asp:View ID="view1" runat="server">
<asp:Button ID="Button1" CausesValidation="true" runat="server" Text="Test" OnClick="Button1_Click" />
</asp:View>
<asp:View ID="view2" runat="server">
<asp:FileUpload ID="importFile" runat="server" Width="300" Height="18" />
<asp:Button ID="bbFileUpload" CausesValidation="true" runat="server" Text="Upload" OnClick="bbFileUpload_Click" />
</asp:View>
</asp:MultiView>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="bbFileUpload" />
</Triggers>
</asp:UpdatePanel>

Code behind

Protected Sub bbFileUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bbFileUpload.Click

Dim result As Boolean = importFile.HasFile

End Sub

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)

vwFile.ActiveViewIndex = 1

End Sub

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

vwFile.ActiveViewIndex = 0

End Sub

Updatepanel Button Async issue - Won't properly register control

skrile — Thu, 09 Apr 2009 04:00:00 GMT

I'm having a weird problem and need some assistance in troublshooting. I have a very simple page.

1    <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="test.aspx.vb" Inherits="HSE.test" %>
2    <%@ Register
3        Assembly="AjaxControlToolkit"
4        Namespace="AjaxControlToolkit"
5        TagPrefix="cc1" %>
6    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
7    
8    <html xmlns="http://www.w3.org/1999/xhtml" >
9    <head runat="server">
10       <title>Untitled Page</title>
11   </head>
12   <body>
13       <form id="form1" runat="server">
14           <asp:ScriptManager ID="ScriptManager1" runat="server" ScriptMode="Release" />
15   
16           <asp:UpdatePanel runat="server" UpdateMode="conditional" ID="updatePanel" ChildrenAsTriggers="False">
17               <Triggers>
18                   <asp:AsyncPostBackTrigger ControlID="button1" EventName="Click" />
19               </Triggers>
20               <ContentTemplate>
21                   <asp:ObjectDataSource runat="server" ID="TestData" TypeName="HSE.HSMS"
22                       SelectMethod="GetHoursWorked">
23                       <SelectParameters>
24                           <asp:Parameter Name="ReportDate" DefaultValue="12/31/2008" />
25                       </SelectParameters>    
26                   </asp:ObjectDataSource>
27                   <asp:Label runat="server" ID="label1" />
28                   <asp:LinkButton runat="server" ID="button1" Text="update" OnClick="button1_Click" />
29                   <asp:GridView runat="server" ID="PlantOpsview" 
30                       AllowSorting="true" AutoGenerateColumns="true" 
31                       DataSourceID="TestData" EnableSortingAndPagingCallbacks="true" />
32               </ContentTemplate>
33               <Triggers>
34                   <asp:AsyncPostBackTrigger ControlID="button1" />
35               </Triggers>
36           </asp:UpdatePanel>
37   
38       </form>
39   </body>
40   </html>
41

Here is the code behind:

1    Partial Public Class test
2        Inherits System.Web.UI.Page
3    
4        Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
5            
6    
7        End Sub
8    
9        Protected Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
10           label1.Text = Now.ToString()
11       End Sub
12   End Class

So, now for the issue. the GridView works great. Headers do the AsyncPostBack just fine. The link is rendered as:

<a onclick="javascript:__gvPlantOpsview.callback("0|0|/wEFCEZhY2lsaXR5Iv92yJF8LRbuYb4o9BmAd5EGb9k=|"); return false;" href="javascript:__doPostBack('PlantOpsview','Sort$Facility')">Facility</a>

But the button is rendered as:

<a id="button1" href="javascript:__doPostBack('button1','')">update</a>

No callback event is wired up. Please tell me I'm missing something obvious. I've cut and past this code into a new test project and IT WORKS?!?! But not in my current project. How is this possible?

Update Panel and CSS

jonathaneggert — Mon, 30 Mar 2009 04:00:00 GMT

I have an update panel in a user control which is contained in a parent page. The update panel has async triggers which refer to buttons outside of the update panel. The update panel containts a literal control that has the .Text value set via code depending on which button is clicked. NOTE: The literal is used for displaying the results of a transform XML=>HTML. The buttons, when clicked, cause an async postback and the appropriate code executes. The problem is that initially the css styling for the update panel works (the literal control has default content) but when the buttons(triggers) are clicked the styling is messed up (absolute positioning does not work). Also, the buttons disappear completely.

What is strange is that if I "wrap" the literal control in <fieldset><legend> tags, everything works correctly. Any ideas on why this happens or suggestions ?

<html>
<head id="Head1" runat="server">
    <style type="text/css">
    #UpdatePanel1 {
      height: 600px;
width: 400px;
border: 1px solid #666666;
padding: 8px;
position: absolute;
overflow: auto;
white-space: nowrap;
     }
    </style>

</head>
<body>
<form id="form1" runat="server">

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">
</asp:ScriptManager>

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" />
<asp:AsyncPostBackTrigger ControlID="Button2" />
</Triggers>
            <ContentTemplate>
  <asp:Literal runat="server" ID="Literal1"></asp:Literal>

</ContentTemplate>
</asp:UpdatePanel>

</form>
</body>
</html>

Use UpdatePanelAnimationExtender

smcherniss — Fri, 27 Feb 2009 05:00:00 GMT

Another good solution is to use the AJAX UpdatePanelAnimationExtender in conjunction with the UpdateProgress control. The UpdatePanelAnimationExtender will fire everytime an associated trigger is executed by the user. This will allow you to script the display of the UpdateProgress control within the UpdatePanelAnimationExtender versus utilizing your own JavaScript. If you notice the code snippet below within the <OnUpdating> Tag, I change the style.display='block' for the UpdateProgress control. Then when the UpdatePanel is done updating I change the style.display='none' for the UpdateProgress control.

Here is a code snippet example:

<cc3:UpdatePanelAnimationExtender

BehaviorID="aniupnlUserDetails" TargetControlID="upnlUserDetails"

ID="upaeUserDetails"
runat="server" >

<ScriptAction Script=

"var b = $find('aniupnlUserDetails');

b._originalHeight = b._element.offsetHeight;" /> <StyleAction Attribute="overflow" Value="hidden" /> <%-- Do each of the selected effects --%> <Parallel duration=".25" Fps="30"> <Resize Height="0" /> </Parallel>

<%-- Developer Notes:

Currently, The AJAX UpdateProgress Control will not display if a Controloutside of the UpdatePanel invokes the update, the Work around is to

set the style display of the UpdateProgress Control to force it to

display. This works off of the Client ID, so if the Client ID is different then the ID you will need to update the Client ID to match the ID

--%>

<ScriptAction Script=

"$get('upsUserDetails').style.display = 'block';" /> </Sequence> </OnUpdating> <OnUpdated>

<ScriptAction Script=

"$get('upsUserDetails').style.display = 'none';" /> <%-- Do each of the selected effects --%>

<%-- Get the stored height --%>

<Resize HeightScript=

"$find('aniupnlUserDetails')._originalHeight" />

</Parallel> </Sequence> </OnUpdated></Animations>

</cc3:UpdatePanelAnimationExtender>

Displaying video in panel on same window when user clicks on movie

just22 — Mon, 01 Dec 2008 05:00:00 GMT

Hello to all.

I have a page in which I have a list of video names in grid using Ajax.

Now what I want is that when the user clicks on a particular video name, the concerned video is displayed in the same window just beside the list. Means the page must not be reloaded.

I have tried using <iframe> and update panel. But I am not able to do so.

So can anyone help me?????

Please reply me soon.

Re: Programmatically Add ListView With Internal DataPager To UpdatePanel

mudassarkhan — Sat, 15 Nov 2008 05:00:00 GMT

Hi All

You can't call response.redirect during the page callbacks. So you can use the following solution

We can use the asp timer control as follows

<asp:Timer ID="tmCheckStatus" Interval="1800000" runat="server">
</asp:Timer>

where the intervel is in millisecconds

In the event section we can write the following

Protected Sub tmCheckStatus_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles tmCheckStatus.Tick
        If Session("abc") = Nothing Then
               Response.Redirect("Login.aspx")
        End If
End Sub

So in this way as soon as the session is expired. User will be redirected to the Login Page thus avoiding the user to click on page when the session is expired.

Mudassar Khan

Re: UpdatePanel and Response.Redirect

mudassarkhan — Sat, 15 Nov 2008 05:00:00 GMT

Hi All

You can't call response.redirect during the page callbacks. So you can use the following solution

So in this way as soon as the session is expired. User will be redirected to the Login Page thus avoiding the user to click on page when the session is expired.

Mudassar Khan