.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

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

Posted By:      Posted Date: August 24, 2010    Points: 0   Category :ASP.Net

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

View Complete Post

More Related Resource Links

error in MVC2 on empty string form fields which are required: "This property cannot be set to a null

In model I have:[DisplayName("ISBN")] [Required(ErrorMessage = "ISBN is required.")] [StringLength(50, ErrorMessage = "ISBN book must have max {1} chars.")] [DisplayFormat(ConvertEmptyStringToNull = false)] public string isbn { get; set; }But when I submit form with empty field ISBN I have an error - ConstraintException: This property cannot be set to a null value.I have find that other people have the same problem and they say that debbugger in VS2010 works wrong - yes ?http://p2p.wrox.com/book-professional-asp-net-mvc-2/79788-constraintexception-unhandled-user-code.html#post259245http://efreedom.com/Question/1-3129080/Server-Side-Validation-REQUIRED-String-Property-MVC2-Entity-Framework-Workhttp://mvcmusicstore.codeplex.com/workitem/6604

Validation error: This property can not be set to a null value [updated with test case!]

Hi, In a dynamic data web application, I get a validation error on a non-null nvarchar(50) column in ListDetails.aspx, even though I have entered a value which should be accepted. The validation error is: "This property cannot be set to a null value.". I can not reproduce this on northwind/adventureworks. Any ideas? UPDATE: I have created a complete test case: http://printf.no/DynamicDataBugTest.zip (The archive was scanned with the latest AVG definitions before uploading to my private secure dedicated FreeBSD server) The test case contains: One Dynamic Data Web App project One MS SQL Server 2005 database backup which contains a single table with three columns One screenshot showing how the error manifests itself I am fairly convinced now that this is a reproducible DD bug. -Andreas

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

Using Dynamic Property inside Html Helper with Razor fires an error



I have the following with Razor:

@Html.GoogleAjax(View.GoogleAjaxKey, new String[,] { { "jquery", "1.4.2" } })

And the I get a strange error:

  'System.Web.Mvc.HtmlHelper<object>' has no applicable method named 'GoogleAjax' but appears to have an extension method by that name. Extension methods cannot be dynamically dispatched. Consider casting the dynamic arguments or calling the extension method without the extension method syntax.

What is strange is that it works fine using:

@Html.GoogleAjax("123", new String[,] { { "jquery", "1.4.2" } })

I tried the following code line:


And the key is displayed just fine so the problem is how I use the value of @View.GoogleAjaxKey into Html.GoogleAjax.

Do I need to change something on my Html Helper? Here it is:

    public static MvcHtmlString GoogleAjax(this HtmlHelper helper, String key, String[,] libraries) {


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??

cannot currently modify this text in the editor.It is read only error


Hi, perhaps i have found a bug in Visual Studio 2008 Team Edition.Every thing was going well.

I started to build my project, but for certain reasons i went to Built Tab and while the project wes in build process i clicked Cancel Button.

Alas!! after that my class file has gone to non-editable mode.It is giving this error:

"cannot currently modify this text in the editor.It is read only ".I closed and again opened Project but no improvement.I went to Tool->Import Export Setting->reset all settings but no benefit.

How to resolve this problem ?

Linq2Sql error: "Invalid attempt to call Read when reader is closed."


I've read up on this error from other posts and on other sites, but haven't found a solid resolution to the issue yet. My setup is as follows:

I have a RepositoryBase class that fields certain db calls that all repositories need to perform. In one such call, "GetSecurityGroup", it works most of the time, but will seemingly at random throw an exception with the error "Invalid attempt to call Read when reader is closed." All other Repository classes inherit from this one, and they all use the same DataContext object, which I understand isn't thread safe. Since there could be multiple calls to the DataContext object on the same page, perhaps one is using the DataContext when the next tries to do so. I'm not sure. What can I do to ensure this doesn't happen?

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!



"Read Only" Access Error when checking in documents from outlook



We are accessing our sharepoint services 3.0 document library through outlook 2007.

We can open the files in word/excel etc, but when we go to check-in the document the application tells us that we only have read access to the document, and cant check the document back in to the server.

It works fine via the browser, the read only problem is only when checking out through outlook.

I have given all users full access and design access to the doc library.

Any help would be greatly appreciated.






Viewmodel property not set to [Required] yet getting error message saying it is?


I have a viewmodel that i use for my view

public int SelectionId{ get; set; }        
public IEnumerable<Selections> Selections { get; set; }

Notice that SelectionId is not decorated with [Required]. In my view, i use DropDownFor like this:

<%= Html.DropDownListFor(m => m.SelectionId, new SelectList(Model.Selections, "Id", "Name"), "--- Select ---")%>

It should be possible to not select anything from the dropdown, resulting in model.SelectionId = 0, which is fine. Why do i get a "SelectionId field is required" error when i Post?  If i do this:

<%= Html.DropDownList(mySelectionId, new SelectList(Model.Selections, "Id", "Name"), "--- Select ---")%>

I no longer get the error if i dont select anything, which is what i want - but no way to bind it to the id if the user does select something

thanks for any help!

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. 

HoverMenuExtender is giving me the error SYS.Extended.UI.PositioningMode.Aboslute is null or not an


Here is my Code....Any thoughts on what I am doing wrong? I pulled in the Ajax Tookit based on the instructions then was following the HoverMenuExtender tutorial.

Any info would be greatly apprecated!

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
    <form id="form1" runat="server">
<asp:ScriptManager ID="asm" runat="server" />
      <asp:Repeater ID="rpOrders" runat="server">
          <br />
          <asp:Panel ID="myPanel" runat="server" Width="400px" BackColor="Lime" BorderWidth="1px">
              <%#DataBinder.Eval(Container.DataItem, &quo

DataGridView>Edit Columns> Column Read Only property is unwilling to change

Hello, I am facing the following mystery: When changing the read only property of a column to false and reopening the "edit columns" window, it mysteriously turns back to true. Even when closing the designer and changing it in the designer code, the resulting execution does not allow edit, as well as when re-opening the designer you see true again.             this.numberDataGridViewTextBoxColumn1.DataPropertyName = "Number";             this.numberDataGridViewTextBoxColumn1.HeaderText = "Number";             this.numberDataGridViewTextBoxColumn1.Name = "numberDataGridViewTextBoxColumn1";             this.numberDataGridViewTextBoxColumn1.ReadOnly = true;//False is required We thought it might be related to data binding. rebinding the grid did not help as well. The is no other place in the code where it changes. Please advice, Thanks

report builder 3.0 How do I set a dataset property filter to null

seems to be every other imaginable option ...  "NULL" is not accepted, [NULL] returns an error ... this should be obvious!

Error "Object reference not set" when I try to set a Navigation Property

I'm using Entity Framework. The following code throws a runtime error "System.NullReferenceException: Object reference not set to an instance of an object." The line before the error, it looks like newControl is in fact instantiated.My model has a Control entity and a ControlType entity. Control includes the Navigation Property "ControlType." I'm trying to set ControlType.Type = 2.SurveyFormControlsModel.Control newControl = new SurveyFormControlsModel.Control(); newControl = CreateControl(childTokenName, ControlTypeEnum.TextBox); newControl.ControlType.Type = 2; // <<--ERROR HERE context.Controls.AddObject(newControl);                                SurveyFormControlsModel.Control newControl = new SurveyFormControlsModel.Control();                                 if (listItems.Count == 0)                                 {                                     newControl = CreateControl(childTokenName, ControlTypeEnum.TextBox);                    &

Workflow 3.5 Activity property is null in condition and nowhere else

I have an activity that has properties that look something like this (they're set up as proper dependency properties, I just kept it simple here): public List<MyType> TypeList { get; set; }public Int32 Index { get; set; }public MyType SelectedType { get; set; } and an execution that just does this: SelectedType = TypeList[Index]; TypeList and Index are values that I set from other activities. I don't set SelectedType to anything in the activity properties, I just let it get set in the execution. Now I know for a fact that SelectedType is getting set properly, I can even point another activity to it and print out some values from it. So I'm quite positive that there's nothing wrong with that activity. However, I have an if activity with a condition that looks like this: ((MyActivity)GetActivityByName("activity1")).SelectedType != null and it evaluates to false (meaning it evaluated SelectedType as null). I'm pretty sure that that activity cast is correct (I do things like that all the time), and if it weren't wouldn't I get a null reference exception when trying to access SelectedType? So I'm pretty sure I'm not doing anything wrong here, but for some reason SelectedType is coming up null in that condition and no where else. It's almost as if the condition is being evaluated before the activity is being run, but the activity comes well before the condi

Interesting error message with content organiser: Cannot resolve mailbox (null) to a valid user

Here is a site with content organiser site feature enabled, as well as the email integration feature. Emails are successfully delivered to the "Submitted Email Records" list, but is never routed to the Drop Off Library. (the content organiser web service works fine and the drop off library works as a custom send to destination and happily processes its rules. If I turn up the debug juice I get the error "Cannot resolve mailbox (null) to a valid user" for every item in any "Submitted Email Records" in the site collection. Area: Document managagement Category: Content organiser EventID: 8000 Message: Cannot resolve mailbox (null) to a valid user I have temporarily worked around the problem by email enabling the drop off library but it creates an intermittent race condition (similar to certain workflow and event receiver situations), so its not a real solution (and in fact I assume thats why the Submitted Email Records hidden list exists in the first place). I've run procmon, specifically focusing on OSWTIMER and nothing interesting shows up at all. The error message is intriguing and I can't really think of what it is trying to do. In troubleshooting I noted that this farm had configured inbound email but not outbound email. I have since rectified this and de/reactivated the content organiser features and reset the timer service and IIS, b
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