.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Javasript error 'this.get_element() is null or not an object'

Posted By:      Posted Date: September 16, 2010    Points: 0   Category :ASP.Net
While testing an AJAX enabled web app I sometimes stumbled upon this script error: 'this.get_element().style' is null or not an object. It was a hard nut to crack this one.This was the actual message 'this.get_element() is null or not an object' The situation: AJAX Enabled web app using slider extenders . In some circumstances a script error is generated. In most cases it is not. The reason:It turned out that the error happens at times when a new Postback is triggered while a previous one hasnt finished yet. That is quickly changing the sliderhandle's position in this scenario. The Postback where triggered because i had set the AutoPostBack property of the extended TextBox to "true".I have some code running inside the event handler . Can anyone suggest an efficient solution for this problem ........................................................?  

View Complete Post

More Related Resource Links

Microsoft JScript runtime error: 'Parent' is null or not an object


Hi friends,

        I got This Error : Microsoft JScript runtime error: 'Parent' is null or not an object

 In runtime,after  click on the check box, It Show "Microsoft JScript runtime error: 'Parent' is null or not an object"

<script language ="javascript" type ="text/javascript" >
        function SelectAllCheckboxesSpecific(spanChk)
           var IsChecked = spanChk.checked;
           var items=0;
           var Chk = spanChk;
              Parent = document.getElementById('gvUsers');          
              var items = Parent.getElementsByTagName('input');                         
              for(var i=0;i<items.length;i++)
                  if(items[i].id != Chk && items[i].type=="checkbox")
                      if(items[i].checked!= IsChecked)

please verify it. 

Javascript "Undefined is null or not an object" error in IE :S

I read around and tried everything to figure out the reason of the issue i'm getting, but i give up, the error i'm getting is only on IE and it's the "Undefined is null or not an object" error.This is it:Line: 29Char: 13Error: 'undefined' is null or not an objectCode: 0This is the script:<script type="text/javascript">    function checkV1() {        if (document.getElementById('CB1').checked)            ValidatorEnable(document.getElementById('CheckBoxListValidator1'), true);        else            ValidatorEnable(document.getElementById('CheckBoxListValidator1'), false);    }    function checkV2() {        if (document.getElementById('CB2').checked)            ValidatorEnable(document.getElementById('CheckBoxListValidator2'), true);        else            ValidatorEnable(document.getElementById('CheckBoxListValidator2'), false);    }THIS IS LINE 29---->    fun

'this.get_element().style' is null or not an object

I've been getting this error message fairly often. A page will work normaly for a while, but eventualy I get the error: 'this.get_element().style' is null or not an object  Once I get the error it seems to happen most of the time. It seems like it might be from the update progress control.   Any ideas? -A    

Persistant Status Bar Notification ... error 'SP.UI.Status' is null or not an object

I want to show a status bar that needs to be persistent on a page. for this I used the following in my master page function ShowStatusBarMessage(title, message) { var statusId = SP.UI.Status.addStatus(title, message, true); SP.UI.Status.setStatusPriColor(statusId, 'yellow'); /* Set a status-color */ } HTML, call the JS method: <a onclick="ShowStatusBarMessage('Title'!','Awesome message!')"> Display Status Bar message! </a> ref: http://www.zimmergren.net/archive/2010/03/17/sp-2010-dynamically-displaying-messages-to-your-users-with-the-notification-and-status-bar-areas-in-sharepoint-2010.aspx   But what I want is to call the function on load. So I used pushed ny function to _spBodyOnLoadWrapper using _spBodyOnLoadFunctionNames.push("YourFunctionName");, it throws an error 'SP.UI.Status' is null or not an object Next I created and deployed a webcontrol and did a registerclientscript, that too gives me 'SP.UI.Status' is null or not an object // Define the name and type of the client scripts on the page. String csname1 = "AlertScript"; Type cstype = this.GetType(); // Get a ClientScriptManager reference from the Page class. ClientScriptManager cs = Page.ClientScript; // Check to see if the startup script is already registered. if (!cs.IsStartupScriptRegistered(cstype, csname1)) {

jquery runtime error: Microsoft JScript runtime error: 'nodeName' is null or not an object


Microsoft JScript runtime error: 'nodeName' is null or not an object

in jquery-1.4.2.min.js 

Error: 'nextElement' is null or not an object when asyncrendering = false

I upgraded 2005 reports to 2008 and updated the corresponding report viewer control in the Web site. Now some reports throw JavaScript errors when AsyncRendering=False. I can't set AsyncRndering to true since that introduces other problems.

Does anyone know what the issues are with upgrading the Report Viewer control form 8 to 9 with this AsyncRendering attribute?

The goal with that attribute is so the browser doesn't have two scrollbars. With that attribute set to true the result is a report with scrollbars inside of a Web page with scrollbars.

Microsoft JScript runtime error: 'document.getElementById(...)' is null or not an object



I have one text box and that textbox should contain firstname.lastname.

I am doing Client side validation.

I am getting error Microsoft JScript runtime error: 'document.getElementById(...)' is null or not an object.

ASPX code :-

function validateTextBox(str)
         alert(str);// Getting proper value
        if (str.indexOf(".") == -1)
                alert("Username should have period(.) between firstName and LastName like FirstName.LastName or FirstNameMI.LastName");
               // Here i am getting error...
                return false;

Javascript errors "null or not an object" and "Could not complete the operation due to error 8007fff


I am getting several javascript errors that I haven't been able to fix. So far, searched have proved fruitless...

We first noticed the problem on 3/31/2011 when we were updating some pages. 

I got a call from one of my power users that a webpart was "locked" and couldn't be opened.  When you first browse to the page, everything looks okay.  When you click on the dropdown to open the menu to modify the webpart, an "Error on page." message shows up in the lower left of the IE browser. 

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C; .NET4.0E)
Timestamp: Fri, 1 Apr 2011 17:14:07 UTC

Message: 'style.display' is null or not an object
Line: 2134
Char: 4
Code: 0
URI: http://rtshare/_layouts/1033/ie55up.js?rev=Ni7%2Fj2ZV%2FzCvd09XYSSWvA%3D%3D

I copied the contents of the web part (content editor web part) and pasted it into a new web part.  I killed the old one by opening up Web Part Page Maintenance page "?contents=1".  That got rid of the web part that was acting up.  It turns out, there is a larg

Jscript error: Object does not support property or method


 Hi, i have little knowledge on javascript but i need to use this code get from somewhere for a jquery to work.

I face this "Jscript runtime error: Object does not support property or method" whenever im trying to run this page.

In my experience, im get this error msg 9 out of 10 times i use javascript in my system.

Im using Microsoft Visual web developer 2008, i wonder if this is related to my problem, i not sure there is anything i need to add as reference or update anything.

But anyway, in short, i just couldn't use javascript code when using this development tool because of this sort of error.

Anyway, it happen that last time i tried use the same type of jquery code in another project and it seems to work well without an error.

But now when im try to use it again in this recent project i created, it come out with this error and i have no idea how to solve it even look through google and this forum.

It doesn't really seems like its the code problem itself although im not sure, because any javascript code just couldn't work.

So below is my code that i need to use.

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" ></script>
<script type="text/javascript" src=&quo

command object error


Could someone please tell me what is wrong with my syntax here?  I'd be much appreciative.


objCmd = New SQLCommand("SELECT CASE WHEN objDR('Item') = 'Enter Bill of Lading' then enterbol " _  

& "WHEN objDR('Item') = 'Bill of Lading History' THEN bolhistory " _  

& "WHEN objDR('Item') = 'Request Transfer' or objDR('Item') = 'View Transfer in Progress' THEN transfers " _  

& "END  from plantGroups where plantgroupid=@plantgroupid", objConn)

Registering controls of current assembly object reference NOT set error


Hi There,

I have created a simple ASP.net Web Application (2.0) and have added a web user control.

Now in my page I have added this control but I have registered like this,

<%@ Register Assembly="WebApplication1" Namespace="WebApplication1" TagPrefix="Custom" %>

Which means I want to access all the controls in my current Web Application project

Then I have added my user control like this,

<Custom:MyUserControl ID="MyUserControl1" runat="server" PublicProperty="Hello" />

Every thing is fine but when I execute the project, NO control on my user control gets "instantiated" and thus I receive error "Object Reference Not Set"

Note that My Control has,

1) Public property PublicProperty as String

2) 1 Label control

In Load Event Handler I am setting Text property of Label Control to PublicProperty. Here object reference NOT set error occurs (which means Label control is NOT initialized).

I don't want to register my control using Src, TagPrefix etc. Any ideas?


'element.className' is null or not an object



I just downloaded the project, compiled it and ran it right out of the box and when I put the mouse pointer over or remove the mouse pointer from either MenuItem in the menu demo, I generate this error:

'element.className' is null or not an object

It points to this javascript method:

updateClassName: function(operation, element, name, value) {
        this[operation + 'String'](
                function() {
                    return element.className;
                function(newValue) {
                    element.className = newValue;

.NET Exceptions: Make the Transition from Traditional Visual Basic Error Handling to the Object-Orie


If you're used to Visual Basic 6.0 and you're making the transition to Microsoft .NET, you will find that error handling is quite different from what you've used for years. Visual Basic .NET uses a more object-oriented solution to signaling and responding to unexpected problems while your program is running. This approach, called structured exception handling, has a number of advantages over the On Error statements provided in previous versions of Visual Basic. For instance, exceptions give you lots more information about exactly what went wrong in your app. To help you take advantage of this modern error handling paradigm, this article will show you how to raise and respond to exceptions, as well as how to create your own custom exception classes.

Jesse Liberty

MSDN Magazine November 2002

linq and max, if return null return error


hi there
i have this query :

var result2 = (from TH in DB.Threshold
                          where TH.ProductSKUID == int.Parse(HID_ProductSKUID.Value)
                          select TH.ThresholdID).Max();

the problem is that if this query does not find any items, return null, so thow exception
how can i do to return 0??

error in MicrosoftAjax.js: Cannot read property '_notified' of null


I am cross testing my project with multiple browsers: IE7, Firefox and Chrome.

One one page I have a dynamically built table with two DropDownLists and CascadingDropDown extenders. Maybe the only thing special about the drop down lists is, that I add a "onChange" for the second drop down list in each row which shows or hides the list depending on the value populated from the web services.

All of this works perfectly in IE7 and Firefox, but Chrome does not execute the JavaScript in the onChange attribute and the error console says:

Uncaught TypeError: Cannot read property '_notified' of null

FileUpload error: Object reference error


I have a FormView with a FileUpload to upload an image in a database.

I keep getting an object reference error.(view code)

I am using this same script to upload the image to the database, but when I try to update the file upload I get the error.    

string strFilePath=Server.MapPath("\\images\\"+fupdImage.FileName);

        Byte[] image=null;
        HttpPostedFile imgVid=FileUpload.PostedFile;

        image=new Byte[imgVid.ContentLength];//Object reference not set to an instance of an object.

        if(FileUpload.HasFile) {
        string imageFile=FileUpload.PostedFile.FileName;
        int index=imageFile.LastIndexOf(".");
        string fileFormat=imageFile.Substring(index+1);


Object or Property is not supported in IE8 - javascript error



I am using following code line in my web app through external javascript file.






both these methods are working fine in IE6 but failing in IE8 with a error: "Object or Property is not supported".


any solution would be appreciated!



ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend