Asp.net - Could Not Find UpdatePanel With ID 'xxx

Oct 13, 2010

I have a page with Ajax Tab controls, within one of the tabs is a webcontrol that as a Telerik RadGrid, with Edit forms pointing to another web control. That edit form also contains Ajax Tabs and on one of those tabs, there is an Ajax modal popup of yet another webcontrol.The initial webcontrol works fine when used on it's own page, but the edit form fails to appear when the control is used within the Ajax Tabs as desired. The script manager is throwing the following error:

Microsoft JScript runtime error: Sys.InvalidOperationException: Could not find UpdatePanel with ID 'xxx'. If it is being updated dynamically then it must be inside another UpdatePanel.

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Asp.net - Update Parent UpdatePanel From Child UpdatePanel - Conditionally

Aug 17, 2010

I am trying to trying to setup an updatepanel to update every X seconds, the problem is I don't want the control to actually refresh unless there is new data. So I currently have a child updatepanel in a parent UpdatePanel, the child updatepanel gets refreshed by a timer. But I can't seem to find a way to trigger the parent panel to update. Again, only when certain conditions(data changed) are met.

Sample Code:

<asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="10000"></asp:Timer>
<asp:updatepanel id="upParent" runat="server" UpdateMode="Conditional">

[Code].....

Asp.net - Error With Updatepanel

Feb 17, 2012

When i put

<asp:FileUpload ID="FileUpload1" runat="server" class="multi" />
<br />
<asp:Button ID="btnUpload" runat="server" Text="Upload All" /> outside the update panel everything works fine,but as soon as i put it back into the update panel...it stops working.

ASPX CODE

[Code]...

Asp.net - Set Cursor To The Top Of Page Under UpdatePanel?

Jun 9, 2011

How can i set the cursor focus on the top of the page when I clicked Update button.
Update button is under UpdatePanel

Asp.net - Tab Index Is Reset In UpdatePanel?

Jan 3, 2011

I'm currently having an issue where an updatepanel does an async postback and loses the tab order when the partial postback occurs.When you run through the tabs the tab order works correctly, but then you press a button and the partial postback occures the tabindex is reset.

How To Use A Dynamically Created UpdatePanel On .NET

Jul 6, 2011

I have the following code:[code]ok, now in another part of my code (another method) i want to get this update panel and work on it. I want something like: [code]

Placeholder Inside An UpdatePanel?

Nov 10, 2010

A little pseudo code to provide some background:I have an ASPX with a placeholder and a buttonWhen the button is clicked it adds a web user control (uc1) to my placeholderThe uc has a button

Asp.net - AJAX Updatepanel, Timer Functions In MVC 3.0?

May 9, 2011

Listen I'm very new to MVC 3.0 but I've been looking and looking for a simple straight forward tutorial for replacing an asp:UpdatePanel in the MVC world. There are lots of examples on the jquery function that needs to be called but since I don't know how to wire it up in MVC I'm still lost. Can someone point me to a hard and fast example on how I can do a simple "timer refreshed" partial view such as putting the date time on a _layout.vbhtml page?

Asp.net - Coding Not Work Inside Updatepanel?

Nov 12, 2010

Why this code doesn't work inside UpdatePanel controls I have in webform : four CheckBoxes and one TextBox

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

[Code]...

Coding was working fine outside the UpdatePanel but not working inside update panel what is wrong with it?

Asp.net - Dynamic Textboxes Not Working In Updatepanel?

Mar 31, 2012

I am creating dynamic text boxes on button click and then showing values on another button click. It works fine until I use ajax updatepanel. In that case values are not shown when I hit second button. My aspx code is:

aspx markup is:

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div id="divRT" runat="server">

[Code].....

Asp.net - Running Javascript Whenever UpdatePanel Refreshes?

Aug 10, 2011

I am using an asp.net update panel to refresh the content on a page when a menu item is selected.

Within the content that is updated are images which have a javascript reflection function which is triggered with the following line of code:

window.onload = function () { addReflections(); }

This runs fine when the page is first loaded but not when a menu item is selected and the update panel is run.

On previous projects using jquery code I have replaced document.ready with function pageLoad but there is no document.ready on this page.

Asp.net - UserControl Causes Full Postback In UpdatePanel

Mar 24, 2011

I'm having few UpdatePanels on my master page. And then, I have RadTreeViewcontrol on the page, that should cause partial postback each time node is clicked. Everything works fine there.

Since I'm using the same tree on some other pages, I moved this functionality to UserControl. Stuff I've done before, so no problem. Moved some code to ascx, created some events. Everything always worked for me well. But not now.

RadTreeView is nested inside UserControl, and this control on master page with update panels, see below:

<asp:Panel ID="pnlContentWrapper" runat="server" CssClass="ContentWrapper">
<div id="HeaderBreadCrumb">
<asp:ContentPlaceHolder ID="HeaderBreadCrumbContent" runat="server" />

[Code]...

What I don't know is: why is this causing full postback instead of partial? I suspect that it may have something to do with raising my for SelectedNodeChange, but I don't know how to deal with it other way. I need to let other components know, that node selection changed. How can I improve this to make it work with UpdatePanels?

Javascript - ASP.NET: UpdatePanel & OnLoad Event?

Aug 8, 2011

I'm trying to execute some javascript code on my UpdatePanel's OnLoad event like so:

<asp:UpdatePanel ID="updDropDowns" runat="server" OnLoad="javascript:ResetButtons();">

But I keep getting "'javascript' is not a member of ASP.reasons_aspx".

I tried doing

Me.updDropDowns.Attributes.Add("OnLoad", "javascript:ResetButtons();")

But I can't reference the 'Attributes' property of an UpdatePanel in the VB code-behind.

Refresh UserControl Inside UpdatePanel?

Jun 5, 2012

I have a UserControl inside UpdatePanel, how to update the user control when clicking a button

.net - Dynamic ASP.Net UpdatePanel Contents Involking Their Own AsyncPostback?

Jun 24, 2011

I have a fully dynamiclly generated page that has a set of linkbuttons basically switching views in a UpdatePanel. All that is working great except for when I have a button that is generated that needs to invoke a function to manipulate the data in the Update Panel.

[code]...

So the problem is when the page_init is executed it does not know which linkbutton was selected so it never recreates the button and in turn never fires the event. I have seen people use the session to store the list of controls and/or the current frame but I don't see that as an acceptable solution. Surely there has to be a way to do this.Is there no way I can get the ScriptManager's current/previous step information outside of the Navigate event?Asp.net 4.0 with latest ajax toolkit.

Asp.net - NullReference On Object In Code Behind After AsyncPostBack Using UpdatePanel?

Feb 20, 2012

I'm building a simple game in an ASP.NET/VB.NET web app. The game has a UI made up of several ImageButtons. The web page's code behind file holds an instance to the game object which will manage each turn taken by players. Everything worked when the Game object's methods were Shared. The problem occurred after refactoring to make the game object work as an instance instead of a shared class. Now, when the action returns to the code behind, the instance of the game object is nothing.

The code bits:

Public Class _Default
Inherits System.Web.UI.Page
Private _gamePanel As Panel

[code]....

Asp.net - UpdatePanel Inside A Repeater - Update All Rows

Apr 15, 2011

I'm trying to speed up my Repeater so that not as much HTML has to be resent via the AJAX UpdatePanel on each call.

So here's what I have (a very much simplified version):

<asp:Repeater ID="rptContactSteps" runat="server">
<ItemTemplate>
<p>Script:<br /><%#mobjSDIT.FormatText(Eval("script"))%></p>

[Code]....

So, when I click 'btnSaveAndCompleteLastStep' I want all the UpdatePanel in 'rptContactSteps' to update. Having the UpdatePanel inside the ItemTemplate should help prevent having to re-load the html/text that populates the Eval("script") & Eval("notes"), since the value of these variables could be very large and over a 3G connection this could be very costly (in time & money).

I though by adding the async trigger it'd work as I have used this type of trigger before, but not when inside the Repeater. Currently the UpdatePanels aren't getting updated at all, except from the one from which the button was pressed.

Javascript - Call .js File In UpdatePanel From CodeBehind

Jun 26, 2011

I am have been trying to teach myself ASP.NET and Javascript for a project and have been stuck on one problem for literally dozens of hours now. I found a really nice javascript drag-and-drop list online, copied the source offered and split the css into a .css file, the javascript into a .js file and the HTML and reference into my asp.net page. It worked perfectly. Next, I replaced the javascript list with a static HTML list populated with the same data, wrapped it in an UpdatePanel and set up an "edit order" button to swap the static list's HTML for the javascript list's HTML when the button is pressed.

[Code]...

ModalPopupExtender Not Displaying On Button Postback Within Updatepanel

Apr 7, 2011

I have a situation where I want to evaluate a record to make sure it fits a specific set of criteria. If it fits the criteria, raise an alert message for confirmation from the user. I do not want to raise the popup unless the criteria matches.

[code]...

UpdatePanel - Set Labels Text To SQLDataSource Value Every 5 Seconds

Apr 1, 2011

I need to use an updatepanel to set a labels text to a sqldatasource value every 5 seconds. I don't really know how to use the updatepanel, I also can't find a way to run a script every 5 seconds. I'm using vb.net and asp.net.

.net - UpdatePanel, TriggerPostBack And UserControl Load Dynamically In TabPanel?

Mar 18, 2012

I have a button that is inside an updatepanel, click on this button I'm trying to load an updatepanel updatepanel and inside this I have a usercontrol added. This is done dynamically'm not having success.

Protected Sub btnNewRpt_Click(sender As Object, e As EventArgs) Handles btnNewRpt.Click
Dim hydic As New HybridDictionary From {{"tabId", "tab1"},
{"ucPath", "UCRelatorioNovo.ascx"},
{"ucId", "uc1"}}

[code]...

the error description is:Could not find UpdatePanel with ID 'TabContainer1_tab1_upTest'.If it is being wellness updated dynamically then it must be inside another UpdatePanel.

Adding A ASP.NET Button As A AsyncPostBackTrigger To An UpdatePanel In A Content Page?

May 26, 2011

I have a button in my master page. When clicked I want it to update my UpdatePanel, which in in a content page, not the master page.How to I add this button as a AsyncPostBackTrigger to my UpdatePanel?

Asp.net - FileUpload Control Inside Gridview (ajax Updatepanel)?

Mar 11, 2011

I've got a fileupload control inside of a gridview so that each row (item from the database) can have an attachment associated with it. I've got a button next to the fileupload control (besides the default browse... button to select the file) to actually take the file and upload it to a file server.This works great if I use this button "Upload". However, underneath my gridview I have another imagebutton that is outside of the gridview, its just sitting on the form / page.The idea of this "Update" button is when end users make changes to the grid I can simply loop through the grid and update the values they have entered to the database. This also works great.

Now here is my issue assume a user has 3 rows in the grid view. On 2 of these rows he decides to add an attachment but he never clicks the "Upload" button he only uses the standard browse button to select the file. Now instead of clicking the "Upload" button that is on the grid view he ends up clicking the "Update" button outside of the grid thinking that it will save his attachments.

So I decided to write code to grab the fileupload control from the grid using .FindControls("NameOfFileUploadControl") in my Update button loop where I loop through all the rows. Then I check if myFileUploadControl.HasFile property to see if there exists a file and if there does upload the file then continue with the code.

The issue is when I click this "Update" button .HasFile always returns false even though I can see the text string of the path in the fileuploadcontrol textbox (the standard one next to the browse button). Is it because this goes back to the page load event and checks if it is a post back? What causes this and how can I fix it?

edit:Im adding some code because im still confused with this

Protected Sub SaveGrid()
For Each Row As GridViewRow In Me.gvLineItems.Rows
Dim f As FileUpload = CType(Row.FindControl("fuAttachment"), FileUpload)

[code]....

This method gets called on a click of a button... The fileupload control is in an of a gridview that is wrapped inside of an UpdatePanel:

<asp:FileUpload Width="90px" Font-Size="xx-small" ID="fuAttachment" runat="server" />

So why is this property always returning false?

Asp.net - Updating A DataRepeater Inside Updatepanel With IAsyncResult Not Working?

Oct 14, 2010

I am having trouble binding data to data repeater when I use ISyncResult.This is what I am doing.There is a button inside a Update Panel that gets the input from the user and calls a function that returns a dataset that I then bind to data repeater which is also inside a update panel.What I did is that I made a delegate to this function, now I am calling this function like this

[Code]...

I am having hard time figuring out why the data repeater is showing no data.While debugging this I see that the dataset is getting the data and is passing the the "ds" but nothing is showing up on my page even though the data is being passed to controls inside data repeater while I am debugging.

ASP.NET UpdatePanel Lock All TextBox Controls After Post-back?

Nov 2, 2010

My code behind is VB.NET. I use ASP.NET UpdatePanel like the following. However, after the post-back, it locks TextBox controls , I cannot type anything, except when I move the mouse over and click on the TextBox.

why it locked all TextBox controls after the post-back?

Here's why I use UpdatePanel:

During the post-back, after inserting data into DB, set all TextBox text property to String.Empty After the form is submitted, the Panel pStudent should be refresh , not the entire page and the TextBox txtId should be in focus again.

here's the mark-up of the ASP.NET page: [URL]

Force Asp.net Page To Postback When In Code Behind That Called By UpdatePanel?

Oct 20, 2011

When an UpdatePanel Calls a method in server and for example this method change textBox1.Text = "12312"

and this textBox1 was out of updatePanle scope it dosn't change it text till a postback happend to the page

so I need after that calculation and chaging the Textbox's text in the server, I need to forcepage to do postback

ImageButton OnClick Function Inside GridView Within UpdatePanel

Nov 21, 2011

I have a GridView which is continually rebound using a timer and is within an updatePanel so the page doesn't refresh continually (each row has a countdown sequence so the gridview needs to continually get updated). Inside the gridview i have an imagebutton with an OnClick method. Previously to get the OnClick method to fire I would make sure the gridView wasn't in an UpdatePanel and that the pageload databinding of the gridview was in an "If Not IsPostBack". With the Timer though I can't have the gridview binding an an "If Not IsPostBack" and it needs to be in an UpdatePanel. Is there a way to use an UpdatePanel and "If Not IsPostBack" and still get the OnClick method to be called?

Here's some of the code, if my explanation didn't make complete sense:
UpdatePanel/Timer/GridView
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:Timer ID="timerCountDown" runat="server" Interval="1000" OnTick="timerCountDown_Tick"></asp:Timer>
[Code] ....

Paging Not Working In Asp.net Gridview Inside AJAX Updatepanel

Aug 27, 2009

I have an asp.net gridview that is originally bound to a sqldatasource control, but when the user presses an external button, it instead gets the contents of a datatable rather than a SQLdatasource control. I therefore had to write code in the PageIndexChanging event of the gridview to allow for paging. My code is as follows:

Protected Sub gvEvents_PageIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewPageEventArgs) Handles gvEvents.PageIndexChanging

gvEvents.PageIndex = e.NewPageIndex

gvEvents.DataBind()

This worked beautifully until I added an AJAX update panel so the whole page wouldn't postback every time it paged, and paging stopped working. I debugged it and discovered that it is actually calling the PageIndexChanging event, but nothing is happening. I searched the web and found a few people with the same problem, but their solutions did not work for me. There was one on this site whose problem was solved by the following:

In PageIndexchanging event, where you bind data to grid, make sure, data is again fetched from the DB

I don't know what that means; my data was being bound as demonstrated above. I have "enable paging" set to true and EnableSortingAndPagingCallbacks set to false.

I am including my markup for the updatepanel below.

<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ibtnSearch" />
</Triggers>

[CODE]...

.net - ASP.Net 3.5 AjaxControlToolkit CollapsiblePanelExpander In Master In UpdatePanel Partial Postback Woes?

Aug 8, 2011

I have a content page linked to a master page. The master has the toolkitscriptmanager. On the content page, I have a nested repeater within the item template of the parent repeater, I have a CollapsiblePanelExtender for the child repeater control. Upon partial postback, if the collapsed attribute is not set, then all of the panels expand. If the collapsed attribute is set to true, then all of the panels are collapsed upon partial postback.

The databinding of the repeater is occurring in the page_init section of the code behind, and I am checking the state of the panels by iterating through the items in the page_load event. Nothing appears to be working, while debugging the code, I do see the properties being appropriately set, but when rendered in the browser, all panels are open. The edit event that triggers the partial postback is preformed in a modalpopup.

I have attempted to move the panels into their own update panel, remove the update panel, place the modal outside of the update panel to no avail. The ViewState is not maintained.

Page Code:

<asp:Repeater ID="rptrConsultants" runat="server" OnItemCommand="rptrConsultants_ItemCommand" OnItemDataBound="rptrConsultants_ItemDataBound">
<HeaderTemplate>

[code]....

.net - ASP.NET: OnChange On Dynamically Created Textbox Inside UpdatePanel Fires Twice

Dec 15, 2011

I'm creating a number of textboxes, all calling a function during the onchange event to update their value to the database. These boxes are dynamically created in the backend because the data changes based on specific criteria that can be changed on the page. Here's the creation of the boxes:

Dim t as TableRow
tC = New TableCell
Dim txtBox As New TextBox

[Code]....

When I enter a number into the Textbox, the event fires as expected, but it fires twice.

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