AJAX :: Sync Postback To Form With A Different URL / PORT When Form Contains ScriptManager / UpdatePanel?
Apr 14, 2010
I have a page with a ScriptManager / UpdatePanel. I currently need to PostBack to a https page from an http page (different ports). I also need the same session data. Currently, I copy my form to a new form, and when I postback to my new Target on a new Port, I get a crash in xmlHttp..something. I will have to post more details later.
I'm currently wondering if this is possible. And does anyone know of such a fix. I even tried to Turn off Partial Rendering and I still get crashes. I can't do this until I pull out the scriptManager / UpdatePanel.
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Feb 5, 2010
I use an updatepanel and I register a handler for endRequest to catch errors: Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler); On the server an exception is thrown to test the client side. The problem is that in IE and FireFox EndRequestHandler is never called! It works as expected in Opera and Safari. On a simple page with few controls it works as expected in all browsers. What I found out with Firebug is that the response is Content-length: 67, but there is no response (empty tab for response)! The expected response is 53|error|500|Object reference not set to an instance of an object.|
I have not debugged the ajax library precisely but what I have seen is that some code runs to prepare for pageLoading event (maybe because it cannot detect the error?), but there is no information for updatepanels from the response and an error occurs trying to use an object for updatepanels which is null. The error is caught by a try-finally block.
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Feb 14, 2011
We are currently migrating the client part of a legacy webapp from asp.net ajax to jquery/jquery-ui. The app consists (among other things) of some asp.net ajax UpdatePanels.
Now I want to throw out all that __doPostback() stuff and talk with jQuery's $.ajax to the "server-side" of the .ascx controls. Ideally, the server reponds with some parseable Datastructure that I can throw into my jQuery UI controls.
I already realized that this is difficult to do, because the asp.net ajax client/server code is heavily interwoven and there are no public interfaces to hook into ajax requests or responses. However, we don't want to change the server-side code, because it should still run with the old asp.net frontend.
After some tweaking I found out that I can hook into ScriptManager's beforeRequest and endRequest events to get notified of postbacks and partial responses. I dispatch these to jQuery Events:
var paqeRequestInst = window.Sys.WebForms.PageRequestManager.getInstance();
//bind ASP.NET ScriptManager events to jQuery events
paqeRequestInst._events.addHandler('beforeRequest', function(){
$(window).trigger('beforePanelResponse');
});
paqeRequestInst._events.addHandler('endRequest', function(pageRequestInst, ErrInst){
$(window).trigger('afterPanelResponse', [pageRequestInst, ErrInst]);
});
However, a lot of questions remain:
What is the best way to intercept the ScriptManager Response, parse it, and throw it into my jQuery UI controls? How do I update all that __VIEWSTATE stuff, that is normally managed by the ScriptManager?
Are there best-practices/jquery-plugins for such a "asp.net ajax to jquery" scenario?
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Feb 8, 2011
I have a user control with both an UpdatePanel and a ScriptManager.
Some pages in the system have a ScriptManager of their own, and need to include the UserControl.
This throws the "You can only have 1 ScriptManager" exception.
If I remove UserControl's ScriptManager, I'll get 'UpdatePanel1 requires a Script Manager" exception.
I've tried to modify the UserControl to dynamically include it's own script manager if none exists. But all the methods I've used before involve adding a delegate to Page.OnInit-- which won't work, since the UserControl Init fires first.
Because the system designers here like making my life difficult, I can't create a MasterPage, or a BasePage for the system in inherit off of. I'd be stuck going to each page an adding a ScriptManager before the UserControl on each of them. Is there any way of, in the UserControl, detecting if the page has a ScriptManager, and if not, adding it dynamically in a way that makes the UpdatePanel happy?
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Mar 1, 2010
I have a master page that loops through form keys looking for a specific key:
[Code]....
Problem, if I use an UpdatePanel on a page when this code is hit the last form key is null. If I don't use an update panel, all is good. Why does the UpdatePanel send a null form key in the list?
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Jul 21, 2010
I hope this is a really easy question but I'm struggling with it. I have a GridView that has an UpdatePanel within a TemplateField.
The idea is that the user can make simple alterations without a full page load being required.
I have simulated my page functionality in the following example, which simulates a database hit, gridview databinding and updatepanel functionality.
When you press any of the + or - buttons in the GridView, the form controls in the bottom UpdatePanel also post their contents back. I have seen this by using Firebug. On my real page however this is causing excessive bandwidth and is nearly the same as a full postback.
how I can force ONLY the appropriate UpdatePanel's contents to postback for processing, rather than all the UpdatePanels?? I've tried experimenting with Triggers but just can't get it working properly.
[Code]....
[Code]....
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Apr 22, 2010
I am interested in finding difference betwen AJAX postback(Partial Postback) & Standard Web Form Postback(Full Postback).
1) What is the size of data submitted back to Server in AJAX & standard Postback(All Input elements are sent to Server here)
2) what is the size of Data that comes back when using Ajax Postback.
3) what is the difference in event Life cycle in AJAX & NON AJAX Post back
I need strong backing/proof as i will share it with other manager at my company
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Feb 17, 2011
I need to create a asp .net web application which should have several forms to get the survey data, When the user is out of the wifi or don't have internet access to connect to the server even though the user should have access to the forms or any other tools to input data and store them locally and sync to the database later. What are the options available to do this kind of tasks in asp.net / C# / Sql Server
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Dec 13, 2010
I'm finding that the scriptmanager and the updatepanel and basic implementations of AJAX for ASP.NET. I'm just wondering whether these were required to use AJAX and partial page update and referencing handlers such as button1_click on the server code page ?
Also if i can ask another question, I'm also wanting to know whether the updatepanel can support feed-in like facebook ? What I'm wanting to do is have something that updates the screen (like the update panel), and items within this panel contains links. When the user clicks on the link it shows a modal div, giving the user options to do some updates. Once the user clicks submit, then this makes a call to the server to update the details then also update the panel. Within the panel I also want to move some of the div elements using javascript (causing the drag and drops to save to the database).
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Nov 25, 2010
I have to ContentPlaceHolder One in head tag and the other one in body->form tag. In my master page.
[Code]....
Default.aspx
[Code]....
I trid to add asp:UpdatePanel to asp:Content ID="Content1" ontentPlaceHolderID="head" but it did't work
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Oct 25, 2013
How to save data in tables without any button click , it should be done at the time of entering data in textbox and before goin to next data.
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Mar 4, 2011
I have a web user control with one updatepanel (pnlUpdate_2), some controls and one apply button. I display the web user control as a modalpopup in my default page. In my default page i have an updatepanel (pnlUpdate_1) with a gridview and I modify that gridview with the apply button of the web user control. The web user control is for made a custom search of the gridview data. I have a problem with both updatepanels. If I set the updatemode as always in one of them (pnlUpdate_1) and the other as conditional (pnlUpdate_2), the pnlUpdate_1 make a postback in the pnlUpdate_2; I'm not an expert on this but I think that's why the pnlUpdate_2 disappear and reappear after postback of some controls in that updatepanel (not the apply button, it close the modal after postback). I try all the combinations and the problem persists. So I put both updatepanels as conditional and in some way it works; now the problem is that when I click the apply button in pnlUpdate_2 to modify the gridview in pnlUpdate_1 the pnlUpdate_1 not made the postback I get the pnlUpdate_2 postback when I use some control inside the pnlUpdate_1.
How can I postback the pnlUpdate1 from pnlUpdate_2 with the apply button?
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Nov 9, 2010
I have a really massive page/controller which i have been able to code well enough. The user can edit information on this page and wont get it saved to the database unless they specifically say, save. However, there is a list at the bottom of this page that you can add/edit and delete elements. Adding and editing takes you to a different page, and before the page change happens, i want to save the form data to session memory, but i dont know how to access it outside a postback. Can MVC do this?
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Mar 24, 2011
Is there a simple way to clear the value of server controls on postback? I have tried ViewState.clear() and it doesn't do anything. The page I am working on inherits from a Masterpage that has viewstate enabled.
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Apr 29, 2010
I have a web form with textbox and button. I want after "ENTER" key click on textbox postbak form.I am using next code:
onkeypress=" if(event.keyCode==13)
{ alert(2);
WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions('ctl00$ContentPlaceHolder1$btnSearch', '', true, '', '', false, false));
alert(2);
return false;}
where WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions('ctl00$ContentPlaceHolder1$btnSearch', '', true, '', '', false, false));
is javascript code for button event onclick.I get two alerts, but postback doesnot happen.
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Jan 20, 2011
Is it possible to postback to the server, perform a function, and then continue that postback on to an external place? (ie, to a payment system)(the scenario is clicking a button to place an order, mark it as sent, then send them off to the payment page (there are form variables that needs to be sent to the payment screen as well))
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Dec 26, 2010
I have a few updatepanel in my asp.net webform . I'm doing some tests and I'm wondering how can i check what data send back to server in different situations ?
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Jan 6, 2010
I'm trying to solve a problem and am open to any suggestions. Here's the situation:
I have a checkout page that has an iFrame that contains a credit card form. The credit card form resides on an external site that is PCI compliant (and it is a requirement that we are PCI compliant so having the credit card form on our domain is not an option). When the user submits the checkout form, I need a way to force the submission of the iFrame form on the server side. This is because I need to wait for the credit card form's site to send back a reply via a web service on my end, which will be passing a token that I save and use later on when the order is submitted. I also will display any validation errors that are reported from the credit card form site, also via the web service.
This all worked just fine in a simulation, but I'm getting permission errors trying to access the form in the iFrame across domains (and after researching this, apparently it's not possible to access an iFrame's document across domains). I need a way to force the submit of the iFrame form on the server side without having access to the form itself. Can this be done? Can anyone suggest an alternative to what I'm trying to accomplish?
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May 9, 2010
I have recently upgraded a .net 1 web application to .net 2.0. Everything works fine except some of the administrator pages. These pages load ok but on postback they give the following error:
Type 'WebModules.Accounts.Business.SiteIdentity' in assembly 'test20, Version=1.0.3777.35197, Culture=neutral, PublicKeyToken=null' is not marked as serializable.
Stack Trace:
[Code]....
[SerializationException: Type 'WebModules.Accounts.Business.SiteIdentity' in assembly 'test20, Version=1.0.3777.35197, Culture=neutral, PublicKeyToken=null' is not marked as serializable.] Microsoft.VisualStudio.WebHost.Connection.ReadRequestBytes(Int32 maxBytes) +0 Microsoft.VisualStudio.WebHost.Request.ReadEntityBody(Byte[] buffer, Int32 size) +86 System.Web.HttpRequest.GetEntireRawContent() +8766749 System.Web.HttpRequest.GetMultipartContent() +62 System.Web.HttpRequest.FillInFormCollection() +168 System.Web.HttpRequest.get_Form() +68 System.Web.HttpRequest.get_HasForm() +8722023 System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +97 System.Web.UI.Page.DeterminePostBackMode() +63 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +133
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Jan 29, 2010
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Nov 10, 2010
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<script type="text/javascript">
function ConfirmSubmit()
{
[code]...
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