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'document.getElementById(...)' is null or not an object

Posted By:      Posted Date: September 21, 2010    Points: 0   Category :ASP.Net

i am making use of the following javascript at page_load event, to fill the default value of textbox, txtBuinessUserMailID at run time:

 void Page_Load(object sender, EventArgs e)//Initialize a stringbuilder object, much faster than string concatenation


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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;

document.getElementById is null

Background I have a Firefox browser with many tabs opened. One of the tabs is displaying a website having data I want to scrape from. I want to take certain data values, compile statistics, and redisplay the information in a newly created popup. The other tabs are unimportant but it would be nice if I could work in others while I am gathering my data (focus moved away from the data window). When focus is on the tab with data, I execute an extension I am building from the tools menu. This starts my output popup window. At the bottom of the popup I have timer START and STOP buttons. When I push the START button, a timer starts controlling a periodic page scrape every few seconds. This webpage with the data is updated in real time via innerHTML which is why I need a timer to scrape the values every few seconds. CurrentlyAnyway, I can locate the window tab that has my data in javascrip.(not sure if this is pertinent or not.) I am confused though how JS knows what tab I am interested in to scrape my data from. I have tried using variants of document.getElementById() but no matter what I do the return is "null". Does somebody know enough to assist? I have taught myself how to do all this in a month so I am nubie all the way. Thanks !Additional Info I have tried the following and all give null returns. var x=window.opener.document.getElementById('active').innerHTML; var x=

'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;

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. 

Null Reference Exception was not handled by user Object Reference not set to instance of an object

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Security.Principal;using System.Data;using System.Data.SqlClient;using System.Windows;using System.Collections; public partial class Default2 : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {     }    private bool tableCopied = false;    private DataTable originalDataTable;     protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)    {         if (e.Row.RowType == DataControlRowType.DataRow)        {            //string sValue = e.Row.Cells[3].Text;             if (!tableCopied)            {                originalDataTable = ((System.Data.DataRowView)e.Row.DataItem).Row.Table.Copy();                ViewState["originalDataTable"] = originalDataTable;      &nbs

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

Null Request object in Controller

I have a need to display user-specific information in my master page.  As a result, I have set up all of my controllers to be inherited from a "master" controller.  This has worked well for other aspects of the master page, such as displaying random quotes.  However, while using this technique to incorporate the user-specific information, I ran into a problem where, when I check the Request.IsAuthenticated value, the Request object is null. Here is my "master" controller:namespace MetalMine.Controllers { using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using MyApp.Models; public abstract class ApplicationController : Controller { private DataContext dataContext = new DataContext(); { ViewData["Quote"] = this.dataContext.GetRandomQuote(); // this is where the Request object is null if (this.Request.IsAuthenticated) { // the User object, here, is also null, BTW ViewData["User"] = this.dataContext.GetUser(this.User.Identity.Name); } } } } Curiously - at least to me - is that the Request object becomes populated by the time program flow hits the Home Controller:namespace MetalMine.Controllers { [HandleError] publ

'null' is null or not an object - DragPanelExtender

Ok, I've been banging my head for hours with this... I have a bunch of ajax controls on my aspx page: a dragpanel and a few accordions. The dragpanel has dynamic content (an image) and appears (visible = true) upon clicking on the link buttons listed in the accordions (no update panel used). On page postback, when one of the buttons is clicked, the drag panel pops up and is positioned over another larger image. Here's what the code looks like:<asp:Panel ID="MyHandle" runat="server" Visible="false"> </asp:Panel> <asp:Panel ID="odragpanel" runat="server" Visible="false"> <asp:Image ID="myoimage" runat="server" ImageUrl="" /> </asp:Panel> <ajaxToolkit:DragPanelExtender ID="DragPanelExtender1" runat="server" DragHandleID="MyHandle" Enabled="false" TargetControlID="odragpanel" BehaviorID="myodragpanel"> </ajaxToolkit:DragPanelExtender> When a user selects a link button from the accordion, the visible properties are set to "true" and the drag panel extender is enabled. This is the next block of code that runs on client side:<script type="text/javascript"> jQuery.noConflict(); window.onload = function() { positionm

'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)) {

Silverlight client object model : Read a document from a document library

How do I read/download a document/file from a SharePoint document library using silverlight client object model? The most closest function that I found was: Microsoft.SharePoint.Client.File.OpenBinaryDirect() but this seems to be throwing an exception "Operation not supported".

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

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 ........................................................?  

Extract document for a SPListItem from a Document Library using the Object Model


WSS 3.0

I want to use the object model to extract the document from a Document Library. I am doing a foreach(SPListItem item in docLib).

How can I use SPListItem to get the document for that item?

Message: '_onSubmitStatements' is null or not an object



I am getting this error:

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; OfficeLiveConnector.1.4; OfficeLivePatch.1.3; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Timestamp: Wed, 22 Sep 2010 16:29:25 UTC

Message: '_onSubmitStatements' is null or not an object
Line: 139
Char: 1
Code: 0
URI: http://localhost/ScriptResource.axd?d=tZ3JCSii4EBM-tx4hEokGcwHyUFbgrEZpCEYoSnucLTc6JYWo2bAUxru-077QmJamzQWn-57TS-gCWMEOCyeIodqSlLvi4Ux0&t=634057278000000000

in my application for a module that displays detailed data in a tab control. I think I have determined the TabContainer1 is the name of the "This" element that is having the issue. I figured this out by debugging the ScriptResource.axd file. Here is the offending lines of code:

Line# 138 = if (typeof(Sys.WebForms)!=="undefined" && typeof(Sys.WebForms.PageRequestManager)!=="undefined") {
Line# 139 = Array.add(Sys.WebForms.PageRequestManager.getInstance()._onSubmitStatements, this._onsubmit$delegate);} else {
Line# 140 = $addHandler(document.forms[0], "submit", this._onsubmit$delegate);}
Line# 141 = }

The way the app works is there are two modules that work together on the page. One is

Downloading a document from a sharepoint site to local file system, copy web service returns null

Hi Guys,
               I am trying to get this done for the last 2 days and I am still banging my head to the wall.
All I need to do is to download files from my sharepoint site library that uses integrated windows authentication. I was using copy webservice : getItem method to accomplish this.

CopyService.GetItem(copySource, out myFieldInfoArray, out myByteArray);

Problem : myByteArray is always returned as NULL

Note: I have tried the same with another site that uses forms authentication but the result was the same (NULL !!)

This is my code:


Copy copy = new CopyService.Copy();


View previous version of a file in document library using Client Object Model




Using Server-side object model, it is pretty simple to get the previous file versions. Say I wanted to view a file in its initial version, all I’d need to do is :




When using Client object model, I couldn’t any analogous method/property which would let me fetch the previous version of file.

Can somebody point me to a sample or the property which would serve my purpose?

how to get complete Document Library url into SPSite object



some documents are in Document Library of sharepoint 2007.

this url is http://abcd:24931/docu/Forms/AllItems.aspx

my task is

i need to display these documents into datagridview of windows form application.

so, i written SPSite siteurl= new SPSite("http://abcd:24931/docu/Forms/AllItems.aspx");

but here(while debuging...) siteurl object is does not contain above complete url.

just it(siteurl) contain only http://abcd:24931, this is my big problem please provide a soluton....

and i think your understood my task also please provide some idea(coding) about my task.

thanks & regards



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