Web Forms :: __doPostBack Infinite Loop Using Onfocus?
Feb 15, 2011
I am calling a method with __doPostBack using the OnFocus event for the controls. However I need to update the values multiple controls when the server method executes. This actually causes on focus to keep firing. Looking for help. I tried using TextBox1.Attributes.Remove("onfocus") and then adding it the javascript after processing but it still keep looping. Here is a sample using to textbox's for simplicity:
I have an application that works great on localhost with forms authentication.I deployed it to the deployment machine and it to the build machine and received and endless set of 302 redirects.I try logging onto the deployment machine and access the page via the deployment machines ip and it works again.So it is not working when I try and access the site from my computer to the build computer.
When I try to view the page in a browser (either Firefox or IE), it asks me for the username and password, and then...asks me for the username and password again.
I am having problems moving my reports from VS2008 to VS2010. I have made several WEB reports in VS2008 that use the code below on the load event of the WEB page to provide a data for the report and they all work correctly. I have to use this method of providing data because I am using several complicated queries that brake the VS2008 and VS2010 wizard.
When I try to convert over to VS2010, the report loading message flashes on the screen and the report never loads. I have run this code in debug and found that it is causing an infinite loop. After the code runs, the load event fires again. I tried adding an exit sub at the end of the code for a test but it has no effect.Below is a sample of the code that I am using with a simplified query and names.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load ' Declare connection string. Dim cnString As String = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString.ToString [code]...
I've found a bug with RC2's client-side validation that causes an infinite loop (at least in IE7).Basically, if you create a standard ASP.NET MVC 2 RC2 web application template and then modify the LogOn.aspx view to this:
[Code]....
Note the new table that has been placed around it.Now, when you fire it up in IE7 and hit "Log On", the whole browser freezes and goes into an infinite loop.I have narrowed this down to the use of OnPropertyChange and the setting of the CSS classes for the elements themselves. It seems whenever an element is in a table, and you change its CSS class, the OnPropertyChange event fires with the property of "value" (which fires the entire process off again hence the endless loop).This is reproducable for me in IE7 (I haven't tested FireFox, IE6 or IE8).
Using VS2005, VB code behind, I have a page with two DropDownLists and corresponding CascadingDropDown's. I want to automatically postback when the second DropDownList index changes, therefore I have set its AutoPostBack="true". I have wired up the web services and the lists are getting populated as expected in IE7+, FireFox and Opera, but when I view the page in a WebKit based browsers (Chrome, Safari) the CascadingDropDown appear to load in an infinite loop. I included theWebkit compatibility fix but the issue persists. I've attached a working example below.Anyone know why Webkit browsers are infinitely reloading the cascading dropdownlists? Is there a fix?Source code below:Markup:
I have error handling in Application_Error event of globals.asax file. Inside this event, I'm using Response.Redirect(~errorview.aspx) method, for redirection to site which is able to handle errors in user friendly way.
Everything works fine, unless exception is rising in Application_Start event. When error occurs there, my application gets trapped in infinite loop with the Application_Error method hit repeatedly. What is more, the page I'm redirecting to never gets hit. Changing Response.Redirect(~errorview.aspx) method to Response.Redirect(~errorview.aspx, false) changes nothing.
The good news is, when Response.Redirect(~errorview.aspx) has been replaced with Server.Transfer(~errorview.aspx), errorview.aspx page succesfully gets hit.
The side effect now is not loading CSS, and errorview.aspx page looks ugly. What is more, the CSS is not loaded only when exception occurs in Application_Start event. Exceptions thrown from any other place don't make the CSS mess.
How I can handle this problem in correct way, and why the CSS is missing in the one particular situation ? What is the appropriate way of handling errors in my case ?
I have fought a bizarre situation for days. Anytime a certain listview loaded the page went into an infinite loop of reloading. I was finally put the listview on a page with nothing else to see if I could isolate the issue.Even with only the folowing code, it continually looped on load even though it brought in the correct data every time.
This is probably embarrassingly easy, but I've having problems getting this to work.
On ResidentAddress.aspx, I have 2 user controls (AppName.ascx and NavButtons.ascx). When a textbox in AppName.ascx has focus, I want to update a hidden input field on NavButtons.ascx with the value of "TRUE". In the codebehind page for NavButtons, I want to see what the value of this hidden input filed is.
This is what I have so far:
NavButtons.ascx <input type="hidden" id="IpChangeFlag" name="ChangeFlag" runat="server" value="FALSE" /> AppName.ascx <asp:TextBox ID="txtFirstName" runat="server" onFocus="document.getElementsByName('ChangeFlag').value='TRUE';"> NavButtons.ascx.vb If IpChangeMade.Value.Trim.ToUpper = "TRUE" Then MyValue = true End If
I am unable to change the value of ipChangeFlad. It always has the value of FALSE.
I'm using the technique described on this link to make all TextBoxes on the site highlighted when focused. Basically, in the Page_Load event of the MasterPage I set the onFocus and onBlur attributes for every TextBox found on the current page:
[Code]....
Everything worked fine until I decided to add the UpdatePanel on one page which is used for frequent data entry. Now, when the page loads initially everything is ok, but after the first asynchronus postback is made, controls inside the UpdatePanel seem to loose their onBlur and onFocus efects (controls outside the UpdatePanel are still working fine). I'm not in the best "relations" with AJAX and javascript :)
But when i deploy the project on the production server, it does not raise the event although i have checked that the function getting called but the event is not raised.
In short
* javascript:__doPostBack('<%=lnkSaveBtn.UniqueID %>',''); in javscript works using http://localhost:2000/myProjectName/Home.aspx
*javascript:__doPostBack('<%=lnkSaveBtn.UniqueID %>','');not works when using http://machinename/myProjectName/Home.aspx
I have tried using javascript:__doPostBack('<%=lnkSaveBtn.ClientID%>',''); but still does n't work.
i have explicitly added __doPostBack() on Button onclientClick event .
[Code]....
When I am clicking the button the Page_Load is calling twice.
But if I am adding below code inside page load ,page load is calling only once on button click.
[Code]....
and return true is giving me again twice page load ,but adding return true or false in attribute.add code is giving the same result ,only one page load call.
[Code]....
I am not able to understand what is going on exactly I try to add __doPostBack in different way.
I have a web forms page with a button that involkes a __doPostBack callback to the page. I would like to invoke this manually - by "manually" I mean from outside the webpage, for example by using wget.
I have a web forms page with a button that involkes a __doPostBack callback to the page. I would like to invoke this manually - by "manually" I mean from outside the webpage, for example by using wget.
I have create a textbox to be validated and a rangevalidator along with validatorcalloutextender to display the error message. All seems to work perfectly, until I realise that my validatorcalloutextender's pop-up has a width like infinite. I have tried diverse css style which I found in google, but still, the width of that validatorcalloutextender is like infinite (though I have set its width to width="20px")
Im getting that error when try to call a __doPostBack on one of my pages, every page that i have in the project use __doPostBack function but in this particular page im getting that Javascript error.i was looking in the internet and the only thing i read is that this error happends when i have a unclose tag but i review the site and its ok.Error: __doPostBack is not definedSource File: htt://localhost:99/ProjectName/Disable.aspx
I'm sending a value (id) from javascript like this:
__doPostBack('',id)
and at the server side I get it like this:
var id = Request["__EVENTARGUMENT"];
the problem is that sometimes other controls also do stuff and the var id also get's value but not with the value I sent, but some control did.how do I send this value separately so that in var id only the value that I sent using js can be.
