Javascript - UpdateProgress Is Not Displayed On Partial Postback?
Feb 8, 2011
i have some time consuming serverside function so i try to execute each function step by step and inform the user about the progress.
So my approach was:
create a visible button that performs an asynchronous postback and handle the click event on serverside execute the first function update a Label to inform the user if the function was executed successfully register a javascript that triggers the click-event of a second invisible(Style="display: none") button that is also registered as asynchronous trigger for the UpdatePanel send page back to client and execute script to click the invisible button handle the button-click, inform user, register js for third invisible button, execute button-click and so on...
But the problem is that the UpdateProgress-control will not be shown although i've set the AssociatedUpdatePanelID correctly. The functions are all triggered correctly and the labels are getting updated, only the UpdateProgress keeps invisible.
[Code]....
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Oct 19, 2010
I couldn't find something similar in SO.
In ASP.NET, is there any way that on cue I can cause a partial postback with Javascript in an UpdatePanel?
I tried __doPostBack() but it does a full postback. I can trick it with a dummy button and fire click() then handle the partial postback that way, but I want a more graceful way than trickery.
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Jan 20, 2011
I am working with a user control which is inside an UpdatePanel. The user control uses swfobject to add a flash object to a div in the user control. Part of the functionality of the user control is it allows the user to change 'channel'. The channel is set and handled in the code behind hence the call in the JavaScript below to <%=channel%>.
The problem I have is that when the new channel is saved, the JavaScript code below is still pointing to the old channel. The only way I can fix this is to refresh the page via the code behind, but I'm thinking there must be a better way to do this..
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Jun 1, 2010
I am trying to use LinkButtons with the DefaultButton property of the ASP.NET Panel in an UpdatePanel. I have read and used the various other answers that are around describing the wiring up of the click event so that a full postback is not done instead of a partial postback. When the page loads, I wire up the .click function of the LinkButton so that the DefaultButton property of the ASP.NET panel will work.
This all works fine, until you bring an UpdatePanel into the mix. With an UpdatePanel, if there is a partial postback, the script to wire up the .click function is not called in the partial postback, and hitting enter reverts to causing a full submit of the form rather than triggering the LinkButton.
How can I cause javascript to be executed after a partial postback to re-wire up the .click function of the LinkButton? I have produced a sample page which shows the problem. There are two alerts showing 1) When the code to hook up the .click function is being called, and 2) When the .click function has been called (this only happens when you hit enter in the textbox after the event has been wired up). To test this code, type something in the textbox and hit Enter. The text will be copied to the label control, but "Wiring up Event Click" alert will not be shown. Add another letter, hit enter again, and you'll get a full postback without the text being copied to the label control (as the LinkButton wasn't called). Because that was a full postback, the Wiring Up Event Click event will be called again, and the form will work properly the next time again.
This is being done with ASP.NET 3.5.
Test Case Code:
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Nov 2, 2010
I have a JavaScript slider which calls the follow functions:
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm._doPostBack('ZoomButton1','');
The ZoomButton1 is tied to an UpdatePanel and does a partial postback. In this case, when the Slider is constantly be dragged left and right, the value is changing/updating and JavaScript is hammering the postback extremely fast. It is so fast, the server sometimes but not always reports a pagerequest manager error, I believe.
I know that I can set it to just update my data (updatepanel) on a button_release or a mouse-up.. but occasionally, I still encounter the pagerequest manager error.
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Nov 20, 2010
This is a problem I'm facing in a webapp I'm currently working on. So instead of cluttering the question with unrelated code, I recreated the problem in an isolated, simplified webapp that only demonstrates this issue.
I have a web user control with just this as its content:
<% if (ShowAlertScript)
{ %>
<script type="text/javascript">
function AlertMe()
{
alert('Hello World!');
}
</script>
<% } %>
<input type="button" onclick="AlertMe()" value="Say Hello" />
And its codebehind has nothing more than the boolean definition of ShowAlertScript. This represents a control I have in the big webapp that has two modes: input mode, and display mode. When in input mode, it has a large javascript block that is only useful then; it does some cool stuff to help the user input the info.The way this control is laid out in the big picture is as follows:
<asp:ScriptManager runat="server" />
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:MultiView ActiveViewIndex="0" runat="server" ID="mvw">
<asp:View runat="server">
<asp:Button runat="server" ID="btnSwitch"
OnClick="btnSwitch_Click" Text="Switch" />
</asp:View>
<asp:View runat="server">
<uc:MyInputControl runat="server" ID="micInput" ShowAlertScript="true" />
</asp:View>
</asp:MultiView>
</ContentTemplate>
</asp:UpdatePanel>
When you click btnSwitch, it simply switches to the second view with the user control. Notice how I have the ShowAlertScript already initialized to true. The potential output is that since I'm "showing the alert script" within the user control, the AlertMe() function will execute when you click the input-button element, because it's written out according to the inline if statement.
If you run this code I gave you so far as is, it will not work. The browser will say it can't see the AlertMe() function; it's undefined as far as it knows. But if you take out the UpdatePanel (or disable the ScriptManager's partial rendering), it will work just fine on a full postback when you click btnSwitch.
I want it to work on a partial postback, because this whole thing is a small piece compared to the rest of the page, and I don't want to do a full postback every time they switch views. Apparently, the ScriptManager doesn't even bother re-rendering the ascx file for possible changes. Either the ScriptManager is not smart enough, or there is an option I'm missing to let it render the <script> so I can invoke its methods on the client side. A potential answer someone might suggest is "why don't you take out the javascript, put it in its own .js file, and have the page reference it so it's available to the control?"
That won't really work with me, because the script block does some initialization and modification that pertain to that single control instance, not to all others on the page.
In turn, you might also be concerned that if I have more than one instance of the control, I end up with copies of the same script. Not really; there will only be ONE input mode of this control in a page at any given time, it's just that I have those two modes in two separate views and I let the user switch between them.
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Aug 26, 2010
I have a simple form (textbox, submit button) which is wrapped in an update panel.
[Code]....
I type some text in the textbox, click submit, then the server creates a database record and returns an object, which has properties like ID, Name, URL, Blah, etc. These are the values that the script requires.
So if i were to call a web service from the client-code, in order to get the values that were just created, i would need to do some hacks (get last record modified that has the value of the textbox). Not ideal, and neither is two AJAX calls for one form post. (update panel postback, then web service call).
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Oct 1, 2010
Trying to display the UpdateProgress but the control is not being displayed, not sure if I have the JS portion correct. However, the "Alert" box is showing.
Since I have an external trigger control in the UpdatePanel, the AssociatedUpdatePanelID will not work and I have to handle the display of the UpdateProgress control programatically.
Code:
[code]....
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May 19, 2010
I am having problems selecting the text within a TextBox in an UpdatePanel in IE 8. Consider a very simple page that contains a single UpdatePanel. Within that UpdatePanel there are two Web controls:
A DropDownList with three statically-defined list items, whose AutoPostBack property is set to True, and
A TextBox Web control
The DropDownList has a server-side event handler for its SelectedIndexChanged event, and in that event handler there's two lines of code:
[Code].....
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Nov 20, 2010
I am displaying a few images in a formview. I want the UpdateProgress image to be displayed in the
Image1 rather than below the FormView1, when the next photo is loading.
[code]...
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May 7, 2015
[URL] .... am using this functionality in my project and it is working very fine but i am facing very strange issue while using this.
The above functionality is not working when we place dropdownlist and textbox inside updatePanel and ModalPopupExtender
The .aspx page where i am using ModalpopupExtender and UpdatePanel for DropDownList and Textbox is below
<%-- *************************** MODAL POPUP EXTENDER ***************************************************** --%>
<asp:HiddenField ID="HiddenField3" runat="server" />
<asp:HiddenField ID="HiddenField4" runat="server" />
<cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server" PopupControlID="Div6" TargetControlID="HiddenField3"
BackgroundCssClass="modalBackground" CancelControlID="bclosemodalpopup" >
</cc1:ModalPopupExtender>
[Code] ....
The above code is not working with UpdatePanel but it is working if we remove DropdownList and Textbox from updatepanel.
The javascript code which i am using is below
<script type = "text/javascript">
var ddlText, ddlValue, ddl, lblMesg;
function CacheItems() {
ddlText = new Array();
[Code] .....
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Dec 3, 2010
I am trying to implement UpdateProgress on the GridView. I want to show the Progress image in the center of the Gridview. I added onUpdate javascript function that gets the corrdinates of the grid to supposedly show the progress control in the middle. It does show in the middle of the Grid except for the first time. First time when I click on the grid (pagination/sort), the progrss control is displayed center left edge of the grid. Not sure
Here is the code that I used.
[Code]....
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Jan 18, 2010
I have a problem with an amimated gif inside an UpdateProgress which is linked to an UpdatePanel. Basically the gif displays for a few seconds then justs stops and then a few seconds later the page displays. Reading some other posts it and putting in some debug info I can guess it is because the postback is returning a lot of markup, so it seems the postback has stopped and the gif freezes while the markup is being sent/being rendered. Is there anyway to keep the gif 'running' while all this markup is doing its thing?
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Jun 23, 2010
I'm trying to put a updateprogress into a webpage where selection from the dropdownlist causes postback. Works out well except that on the first postback, the gif image shows on the leftside rather than on the center. On succeeding postback, it will show on the centre where I intend it to be. Below is my code:
[Code]....
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Jul 30, 2010
In a nutshell I have an UpdatePanel with an UpdateProgress item, first postback checks for warnings, if there are any they will be be displayed to the user as a JavaScript 'confirm' box. If the user clicks OK the next postback occurs to commit the change.
The UpdateProgress loading notification appears on the first postback but not on the second, even though both of them function correctly. The buttons that trigger both postbacks are async postback triggers in the update panel, and both are inside the ContentTemplate.
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May 7, 2015
I am trying to using update panel that have upload file when it click and showing the updateprogress
Here is the design
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="upTest">
<ProgressTemplate>
Updating!
[Code] ...
So how I can get the value of the file once the button click?
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Apr 29, 2010
on my page i have an updatepanel which contains a gridview and a listbox...
When selecting a row in the gridview i copy a value inside the listbox through javascript.
I would like to show the updateprogress while the javascript is being executed so i wrote this javascript but it is not showing the updateprogress... There are also no errors
[Code]....
how to show the updateprogress ? I would also like to show the Updatepanelanimationextender through the javascript
<ajaxToolkit:UpdatePanelAnimationExtender
ID="UpdatePanelAnimationExtender1"
TargetControlID="pnlResultaat" [code]....
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Jan 13, 2010
I'm getting a JavaScript error in the ASP.NET AJAX framework when using the UpdateProgress control.Details:The UpdateProgress is inside the UpdatePanel.
Firebug error information: this.get_element() is undefined Sys$UI$_UpdateProgress$_startRequest()ScriptRe...373681250 (line 1931)
anonymous()ScriptRe...373681250 (line 61).How do I resolve this issue? Is this a known bug and if so what are the steps I need to do to avoid it?
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Aug 5, 2010
It seems UpdateProgress will be displayed covering the entire area of the UpdatePanel. I want to replicate this behavior using plain javascript, as this behavior needs to be done for a windows client form. Are there any javascript libraries available? I am using a Browser control inside windows client form to get results and render them.
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May 2, 2010
I have a webform that works the following way:
1. Button_openPanel will display panel Step2Panel through ModalPopupExtenderStep2.
2. Button_runThread (inside Step2Panel) will close Step2Panel and will then run a lengthy process server-side. This lengthy server-side process will cause the UpdateProgress control to be displayed.
Similar to the ModalPopup, I want to disable the whole page while the UpdateProgress control (with its animation gif) is running. Currently, the UpdateProgress is displayed, but I can click Button_openPanel (or anything else) which will cause the application to break.
Is this possible?
This is basically all the code. I stripped anything that was unneeded:
[Code]....
The code-behind is basically this:
[Code]....
Everything's working pretty good now, but I need to disable everything while the time-consuming process is running and UpdateProgress is displayed.
I was thinking of displaying the UpdateProgress control as a a sort of ModalPopup, but I'm not sure if it's possible. If not, then the alternative would be to disable Button_openPanel while the time-consuming process is running and UpdateProgress is displayed.
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Jun 4, 2010
For some strange reason an alert dialog with the text title "Message From Web page" and message "-" displays when posting back a for with validation. There are no custom validation scripts that display an alert window. I am debgging javascript using IE development toolbar? Is it possible to break into the code that displays the alert box? so far I have been unable to do so.
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Jun 4, 2010
How do I detect whether a postback is a partial postback from any of my Update Panels?
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Jan 31, 2011
In a page contains two UpdatePanels, How can I know which UpdatePanel causes the partial PostBack ?
I mean in the Page_Load event handler.
This is my code:
[Code]....
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May 27, 2010
can we check postback is partial postback or whole page postback ?
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Jun 10, 2010
Is there a difference, or are the terms synonymous? i could only find the difference between a full postback and a callback. I'm already aware of how a full postback is different.
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