.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, to access method failed

Posted By:      Posted Date: October 01, 2010    Points: 0   Category :ASP.Net

Salam To all,

please find my scenario,

i have two Class projects A,B and i have Webapplication project,

the web application call Class A,

the class A make some internal operation with class B.

when a function in a class A attempts to call Entities in Class B, i have the following Error:

Attempt by method 'Txns_Model.Txns_Configuration..ctor()' to access method 'System.Linq.Expressions.Expression.Lambda<System.Func`2<Txns_Model.Txns_Entity,Users_Model.Users_Entity>>(System.Linq.Expressions.Expression, System.Linq.Expressions.ParameterExpression[])' failed.

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.MethodAccessException: Attempt by method 'Txns_Model.Txns_Configuration..ctor()' to access method 'System.Linq.Expressions.Expression.Lambda<System.Func`2<Txns_Model.Txns_Entity,Users_Model.Users_Entity>>(System.Linq.Expressions.Expression, System.Linq.Expressions.ParameterExpression[])' failed.

Source Error:

View Complete Post

More Related Resource Links

Sys.Net.WebServiceFailedException: The server method '' failed with the following error:



Let's say we have 2 time consuming functions, aaa and aaa1 inside a aspx page.

        public static string aaa(int i)
            return i.ToString();

        public static string aaa1(int i)
            return i.ToString();



        <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
        <span id="displayspan"></span>
        <br />
        <input type="button" value=

Token-based server access validation failed with an infrastructure error

Hi We have a new Win 2008 Enterprise x64 server running SQL 2008When we try to connect to the server using Windows Authentication, from a user account which is a domain administrator, we get the following message:"Token-based server access validation failed with an infrastructure error"What needs to be configured here for this to work ?ThanksBruce

Login failed for user:Token-based server access validation failed with an infrastructure error


I would appreciate help with the following issue:


I have created a local group in our SQL 2008 server and added two Windows user accounts "DOMAIN\UserName"  I  then added the local group to the database and granted read only access.


The users are trying to link tables using MS Access using and ODBC connection and getting the following error.

Users are not system administrators.


Date                      6/30/2010 1:01:54 PM

Log                         SQ

BackgroundWorker calling COM api method get "Access Violation" error


My WPF appl need to call methods in a COM object (VC++) to do some work. It works perfectly when I call those methods   from the UI thread. As those calls take a very long time to finish, so I decided to move the interaction with COM to a BackgroundWorker. But I got an exception in one COM methods (Other methods still working fine). The error reads:

Unhandled exception at 0x62a7be37 (msvcr100d.dll) in TestApp.exe: 0xC0000005: Access violation writing location 0x0ab0f000.

The signature of the COM method is:


            DWORD size = some func get the size;

            BYTE* pSrcData = the src data address;

            memcpy((void*) pData, pSrcData, size);   //Error occured on this line


    return S_OK;


How the C# calls the method:


SubscribeToEvents Server Method Error Hresult: 0x80070005 Access Denied


Hi there;

I am developping a smo app that uses the Server.Events.SubscribeToEvents Method and actually a have a

Access Denied Error if I use it local and I have a Hresult: 0x80070005 Access Denied if I use it remotly.

Are there somebody who can help me with these items????


PD. I hope that you forgive my english.



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

Intermittant error: "A connection attempt failed because the connected party did not properly respon



I'm having a doozy of a problem, and can't find a solution.  I have a WFC Web Service installed to a pair of servers, and accessed through a load balancer.  I am accessing the service from an ASP.NET client app, also via WCF.  The Client is not load balanced.

I'm getting an intermittant error:

(Inner Most Exception) System.Net.Sockets.SocketException:  A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond x.x.x.x:80

(Middle Exception) System.Net.WebException: Unable to connect to the remote server

(Outer Exception) System.ServiceModel.EndpointNotFoundException:  Could not connect to http://<MYSite>/<MYApp>/<MYService>.svc. TCP error code 10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond x.x.x.x:80.

I can reproduce this error with about 20% reliability if I execute the exact same page request on the client from 2 browsers at the same time.  When the problem occurs, the successful p

CLSID {00024500-0000-0000-C000-000000000046} failed with error: 80070005


Hi Guys,

I know the Microsoft do not support to automate office products. But still i am able to do that with Excel. I did some changes in registry and DCOM confing. Then i am able to open and edit excel on server machine.

Before doing this changes i was getting following error

Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005.

After doing registry changes problem is resolved.

I followed steps given by Smith in



But when i deployed my application on Win Server 2008 and calling from client then i am getting following same error as above


Please help me


Santosh J.


Custom tool error: Failed to generate code for the service reference 'CompanyService'. Please che


A little background because I feel I have an out of the ordinary architecture in place and don't know if this is contributing to the problem. 

We have an existing ASP.net application that is undergoing expansion.  The new functionality is all written in Silverlight 4.  As part of that expansion I gutted all the old Linq to SQL and put Entity Framework 4 into place.  To do this I created a standard .net Class Library and added my edmx files there.  Naturally, the business entities created by this cannot be used in Silverlight.  So I created a Silverlight Class Library and added all the business entities to that Silverlight Class Library as linked files.  I changed the name space to be the same.

So I have the following assembly / namespaces

Company.Project.Dal.csproj / Company.Project.Entities (.net 4 class library)

Company.Project.Entities.csproj / Company.Project.Entities (SL4 class library)

With this architecture I was able to share my business entities with my SL enabled web services, my asp.net projects, my silverlight projects.  Really it's a beautiful thing.

Once this was done I added "message" classes to Company.Project.Dal and again shared them with the other entites using linked files.  These messages are things like MyObjectRequest; they are class

"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.






SharePoint 2007 Access Error


Hi everybody!

I´d like to verify if somebody see this scenario:

* I create a site, using te meeting site template;

* I give Full Control access to an user;

* When this user try to upload an item in a library, in this site, it was showed the message "Acces Denied".

* If the user press "back" in the Internet Explorer tool bar and press "F5" to refresh, the file is there.

* The same problem is ocurring, when he try to create a meeting.

Somebody ever see this error!?

Thanks a lot


Access Denied error


I have read several posts where this access denied to path ex.('c:\test' ).  The only way I got this to work was adding <identity impersonate> using my credentials in the web.config file but I don't want to use my credentials all the time.  I have Windows as the authentication mode so why doesn't it work without supplying my credentials?  I tried giving Network Service account write permissions to the folder but that doesn't work either.

Server 2008 R2 -> Failed to decrypt using provider 'RsaProtectedConfigurationProvider'. Error mess


So I am using the aspnet_regiis.exe tool to encrypt sections of the web.config in my asp.net applications and services.  I have done this for years successfully on Windows Server 2003 (IIS 6).  However I just moved some apps over to Windows Server 2008 R2 (with IIS 7.5) and I am now receiving the following error at runtime:

"Server was unable to process request. ---> Failed to decrypt using provider 'RsaProtectedConfigurationProvider'. Error message from the provider: Bad Data."

Now I am quite familiar with this process and am stumped at what I have missed this time around.  I have done ALL of the following which typically suffices for the process on the server. PLEASE READ ALL AND DO NOT PROVIDE RESPONSES OR LINKS FOR THINGS I HAVE ALREADY DONE Thanks!!  Wink

  1. Imported the keys to the server using aspnet_regiis -pi  Result: Success
  2. Given FULL permission (using -full switch) using aspnet_regiis -pa to ALL of the following accounts  Result: Success
    1. The remote server returned an error: (405) Method Not Allowed.



      {System.Net.WebException: The remote server returned an error: (405) Method Not Allowed.
         at System.Net.WebClient.UploadFile(Uri address, String method, String fileName)
         at System.Net.WebClient.UploadFile(Uri address, String fileName)
         at System.Net.WebClient.UploadFile(String address, String fileName)
         at Test.Page_Load(Object sender, EventArgs e) in c:\Inetpub\wwwroot\WebSite1\Test.aspx.cs:line 35}

      Windows application, automated process will run on local user system...
      trying to upload a file to website folder. website address:

      System.Net.WebClient wc = new WebClient();
      wc.UploadFile(website address, "c:/1.pdf");

      Getting error from above line.. Am doing something wrong??
      I dont want to use ftp or share folder logic..
      is there any other way to upload the files to server??

Ajax Cascading drop down method error 500!


Sorry to trouble you all with something that has already been posted a million times but I have tried everything I can and stuck with for about 10 days now. Please help. I have created 2 tables Categories, Subcategories.

Categories table has Category_ID(Primary Key) and "Category" fields. Subcat table has SubcatID(Primary Key, Sub_cat and Category_ID(Foreign Key). Here's the code of the asmx file.

Service methods used in ASPX file ServiceMethod="GetVendors" and ServiceMethod="GetContactsForVendor". Please help me find the source of the method erro 500 and I will be very greatful.

<%@ WebService Language="VB" Class="CascadingDropdown1" %>

Imports System.Web.Script.Services

Imports AjaxControlToolkit

Imports System.Web

Imports System.Web.Services

Imports System.Web.Services.Protocols

Imports System.Collections.Generic

Imports System.Collections.Specialized

Imports System.Data.SqlClient

<ScriptService()> _
Public Class CascadingDropdown1
Inherits System.Web.Services.WebService

<WebMethod()> _
Public Function GetVendors(ByVal knownCategoryValues As String, ByVal category As String) As Cascadi

VS 2008 Install - Windows Mobile 5.0 SDK R2 for Pocket PC: [2] Error: Installation failed for compon



I am trying to install VS2008 on my Windows XP machine. I have MS Office 2003 and SP2. Disabled the Norton Anti-Virus. I am getting the following error. I appreciate if some one can help me.

[08/26/10,07:04:36] Windows Mobile 5.0 SDK R2 for Pocket PC: [2] Error: Installation failed for component Windows Mobile 5.0 SDK R2 for Pocket PC. MSI returned error code 30
[08/26/10,07:04:39] VS70pgui: [2] DepCheck indicates Windows Mobile 5.0 SDK R2 for Pocket PC is not installed.
[08/26/10,07:04:39] VS70pgui: [2] DepCheck indicates Windows Mobile 5.0 SDK R2 for Smartphone was not attempted to be installed.
[08/26/10,07:04:39] VS70pgui: [2] DepCheck indicates Microsoft Device Emulator version 3.0 was not attempted to be installed.
[08/26/10,07:04:39] VS70pgui: [2] DepCheck indicates Microsoft SQL Server 2005 Express Edition (x86) was not attempted to be installed.
[08/26/10,07:04:39] VS70pgui: [2] DepCheck indicates Crystal Reports Basic for Visual Studio 2008 was not attempted to be installed.
[08/26/10,07:04:39] VS70pgui: [2] DepCheck indicates Microsoft Windows SDK for Visual Studio 2008 Tools (x86) was not attempted to be installed.
[08/26/10,07:04:40] VS70pgui: [2] DepCheck indicates Microsoft Windows SDK for Visual Studio 2008 Headers and Libraries (x86) was not attempted to be installed.
[08/26/10,07:04:40] VS70pgui: [2] DepCheck indicates Microsoft

Error "The process cannot access the file ....." occurs while using function "ExportToStream"


Dear all,

   I sometimes get the following error while printing crystal report to pdf:

   System.Runtime.InteropServices.COMException (0x80004005): The process cannot access the file because
it is being used by another process. at CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass.Export
(ExportOptions pExportOptions, RequestContext pRequestContext) at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream
(ExportRequestContext reqContext) at CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext)
 at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportOptions options) at
 CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportFormatType formatType) at
 CommonWA.CommonFunc.GetPDFMemoryStream(DCMSReportDoc _dcmsreportdoc, Boolean& _DataExist) in E:\wwwroot\ASPWA\CommonWA\CommonCom.vb:line 382

  The error not occurs frequently but sometimes it will happen, can someone tell me why the error occurs and how can I solve the problem?

Thank you very much.


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