.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 - No parameterless constructor defined for this object.

Posted By:      Posted Date: September 10, 2010    Points: 0   Category :ASP.Net
I am doing Music Store sample application.Here my code.StoreViewModel public class StoreManagerViewModel { public Album Album { get; set; } public SelectList Artists { get; set; } public SelectList Genres { get; set; } } StoreController public ActionResult Create() { var Artists = storeDB.Artists; var Genres = storeDB.Genres; StoreManagerViewModel model = new StoreManagerViewModel() { Album = new Album(), Artists = new SelectList(Artists, "ArtistId", "Name"), Genres = new SelectList(Genres, "GenreId", "Name") }; ViewData["Artists"] = model.Artists; ViewData["Genres"] = model.Genres; return View(model); } [HttpPost] public ActionResult Create(StoreManagerViewModel model) { try { if (ModelState.IsValid) { Album album = new Album() { Title = model.Album.Title, Price = model.Album.Price, ArtistId = Convert.ToInt32(model.Artists.SelectedValue), GenreId = Convert.ToInt32(model.Genres.SelectedValue),

View Complete Post

More Related Resource Links

Object cannot be serialized because it does not have a parameterless constructor


I am creating a web service based on auto-generated classes from a schema compiler and all works well until I try to run the web service.  The service is:


[WebMethod(Description="Requester pings URL of EA to see if it is alive. Returns errorObject(s) as necessary to communicate application status.")]

[SoapHeader("MultiSpeakMsgHeader", Direction=SoapHeaderDirection.InOut)]

public errorObject[] PingURL()


return null;


The class code is:


public class errorObject : Altova.Xml.TypeBase


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?


"Type ASP.x is not defined" error for dynamic user control when publishing updateable


I have a user control (ContainerCtrl) which programmatically instantiates another user control (SimpleCtrl) in OnLoad. It builds and runs fine, but when I publish it I get the error "error BC30002: Type 'ASP.SimpleCtrl' is not defined." (If I publish without the "updateable" option there's no error, but I need the site to be updateable.)

I assume this has to do with the particulars of how the assembly(ies) are built for the different compiler options. My question is, how can I get it to work properly for "updateable" publishing?

VS 2008 / .NET 3.5 sp1

The code follows (web.config is the default from Visual Studio).

Many thanks, Dave


<%@ Control Language="VB" ClassName="SimpleCtrl" CodeFile="SimpleCtrl.ascx.vb" Inherits="_SimpleCtrl" %>

    Simple control


Partial Class _SimpleCtrl
    Inherits UserControl

    'Nothing to see here.

End Class


<%@ Control Language="VB" CodeFile="ContainerCtrl.ascx.vb" Inherits="_ContainerCtrl"

.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

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!



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. 

Object expected error


<input type="button' onclick="timeoutCheck()" value="Click Me!" />

it tells me Microsoft JScript runtime error: Object expected


timeoutCheck() is my script function that i declared above the input tag

can anyone tell me why i am getting this error

hello i need help , any ideas are welcome i have been working on this for two weeks now and cannot seem to be able to advance

Error While sending Email using Outlook object in asp.net 4.0


Hi ,

            I am trying to send Email using Outlook object but  it gives following error :

Retrieving the COM class factory for component with CLSID {0006F03A-0000-0000-C000-000000000046} failed due to the following error: 80080005 Server execution failed (Exception from HRESULT: 0x80080005 (CO_E_SERVER_EXEC_FAILURE)).

I have added outlook reference "using Microsoft.Office.Interop.Outlook"  version

and i am using below code :

Microsoft.Office.Interop.Outlook.Application oApp = new Microsoft.Office.Interop.Outlook.Application();
            Microsoft.Office.Interop.Outlook._NameSpace oNameSpace = oApp.GetNamespace("MAPI");
            Microsoft.Office.Interop.Outlook.MAPIFolder oOutboxFolder =
            oNameSpace.Logon(null, null, false, false);
            Microsoft.Office.Interop.Outlook._MailItem oMailItem =

Object reference error

Hi, I have an XML File shown below<?xml version="1.0" encoding="utf-8"?> <feed xmlns="http://www.w3.org/2005/Atom" xmlns:g="http://base.google.com/ns/1.0"> <Title>Products</Title> <link rel="self" href="http://localhost:49200/" /> <updated>30-08-2010T04:17:45Z</updated> <author> <id>tag:localhost,30-8-2010:/support/products</id> <entry> <id>13137</id> <title>example</title> </entry> </author> </feed> I am trying to read the id tag in the entry tags but i get object reference not set to ............. error the code to read it isDim prddoc As New XmlDocument prddoc.Load(Server.MapPath("prd.xml")) Dim xmlList As XmlNodeList = prddoc.GetElementsByTagName("entry") Dim rootNode As XmlElement rootNode = prddoc.DocumentElement For ic As Integer = 0 To xmlList.Count - 1 response.write(prddoc.SelectNodes("//entry/id").Item(0).InnerText Nextthe error is on line response.write(prddoc.SelectNodes("//entry/id").Item(0).InnerTextplz help  

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);                    &

modalpopup and javascript error object required

Hi!   I Have this error when click on a button to open a popup box in my page: "object required"   Here is my code:   <%@ Page Language="VB" MasterPageFile="~/artm.master" AutoEventWireup="false" CodeFile="artm_principal.aspx.vb" Inherits="artm_principal" title="Principal" Debug="true" MaintainScrollPositionOnPostback="true"%><%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="AJT" %> <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">                                      <AJT:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"></AJT:ToolkitScriptManager>                                        <AJT:ModalPopupExtender ID="ModalPopupExtender1" runat="server"         &

Help with error "The AdomdDataReader object is not positioned at a valid row"

I have a PerformancePoint grid from which users can drillthrough into records in the underlying cube.  The cube itself imposes no limit on the number of records returned by drillthrough.  The server has a limit of 10,000 drillthrough records.  The Analysis Services build is 10.0.2531.0  In any event, the drillthrough itself always works, but when the number of records is large (say, 6000 or so), users receive the following error when attempting to export the results to excel: Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: The AdomdDataReader object is not positioned at a valid row. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [InvalidOperationException: The AdomdDataReader object is not positioned at a valid row.] Microsoft.AnalysisServices.AdomdClient.AdomdDataReader.InternalGetValue(Int32 ordinal) +423 Microsoft.AnalysisServices.AdomdClient.AdomdDataReader.GetString(Int32 ordinal) +7 Microsoft.PerformancePoint.Analytics.WebC

Best practice for user defined error messages in SQL Server 2005/2008 --Need help

My requirement is to setup a standard practice for our team in handling DB erros and also  user defined messages. We are handling exceptions using Raiseerror method with in Try and Catch blocks.  For user defined message, we are using Sp_addmessage to add our application specific error/warning messages with error codess>80000.  Ex: 80001 | Company name already exists. please check. Here is the sample code ********************************************************************* CREATE PROCEDURE [dbo].[usp_CompanyProfile_insert]  -- Add the parameters for the stored procedure here  (@company_name VARCHAR(50),  @company_code VARCHAR(3),  @user_id INT  ) AS BEGIN  -- SET NOCOUNT ON added to prevent extra result sets from  -- interfering with SELECT statements.  SET NOCOUNT ON;  BEGIN TRY -- Begin Try Block      -- Validate company name   IF EXISTS (SELECT company_id FROM companyprofile WHERE company_name = @company_name)    RAISERROR(90021, 16, 1)      INSERT INTO companyprofile (company_name,       company_code,       createdby)   VALUES(@company_name,     @company_code,     @user_id)    END TRY  -- End Try Block &

Java - Type not defined error with ReportViewerWebControl.axd

I've been searching for several days now looking for threads / solutions in regards to a Report Viewer Problem. OS - Windows Server 2008 all updates installed DN FW - 3.5SP1 and 4.0 ReportViewer.exe was and is installed (Version 10.0.30319.1) The ReportViewer Assemblies are in the GAC The project is a Visual Studio 2010 project The application is running in it's own App Pool with the 4.0 framework in integrated mode In order to pin this down I have reduced a test project to an empty page with a Report Viewer Control and a Button. There is no DataSource and no report associated with the viewer, just the empty viewer control. The web application runs without errors on my dev box and on a new test environment (with the Web Server in a VM) that I set up to test with. When I deploy to our test or staging servers the page fails with Java Script errors. The error that is the root cause is "Type is undefined" which is referring to Reserved.ReportViewerWebControl.axd.  When using the developer tools for IE the script is loaded but fails at Line 1 of the script Type.registerNamespace("Microsoft.Reporting.WebFormsClient"); with the message Type is undefined.   'Type' ist undefiniert  Reserved.ReportViewerWebControl.axd?OpType=Resource&Version=10.0.30319.1&Name=ViewerScript, Zeile 1 Zeichen 1 When I call the ReportViewerWebCont
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