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.NET 4 Security - Transparent vs Critical: How to use AppDomain.SetData on a Medium Trusted App?

Posted By:      Posted Date: September 14, 2010    Points: 0   Category :.NET Framework
Our website is hosted on a third party vendor (Locaweb, in Brazil) and now we are migrating it to a new platform: Windows 2008 R2 64-bits, with IIS 7.5 and .NET Framework 4. On the old platform (Windows Server 2003 32-bits, with IIS 6 and .NET Framework 3.5) we used this configuration on our web.config file: <configuration> <connectionStrings> <add name="Noticias" connectionString="Data Source=|DataDirectory|Noticias.mdb;Provider=Microsoft.ACE.OLEDB.12.0;" providerName="System.Data.OleDb"/> </connectionStrings> </configuration> And this code on our Global.asax file: <%@ Application Language="VB" %> <script runat="server"> ' Code that runs on application startup Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs) Dim dirInfo As System.IO.DirectoryInfo Dim dataDir As String ' Cria um objeto com informações sobre o diretório raiz do site. dirInfo = New System.IO.DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory) ' Obtém o endereço do diretório acima do raiz do site, para ' chegar à pasta 'dados'. Isso porque a estrutura é assim: ' \root\dados (pasta onde os BDs são armazenados) ' \root\web (pasta raiz do site) dataDir = System.IO.Path.Combine(dirInfo.Parent().FullName, "da

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Application attempted to perform an operation not allowed by the security policy - medium level trus


Sorry about posting this one here but not sure where else to place it, I've read a number of other threads on this but none seem to give the answer I'm looking for...


I have done something very simple, added a SqlDataSource ScriptManager and AJAX Update Panel. My database is currently inside App_Data folder.


When I run the page I get the following error:


Security Exception

Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. 

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.



Now in the Web.Config file I have set       <trust level="Medium"/>


but I don't want to change this because when deployed it is unlikely that I will be able t

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Security in SharePoint is comprised of users, groups and roles.

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Hello all, I'm new to asp.net and I'm currently practising some few stuffs. I'm creating a hotel reservation system using ASP.net Web site in visual studio 2008 and I currently don't have an App_Data in my solution explorer unlike visual web developer.

1. I have planned to make users of the website login before making their reservations.

2. I have also planned to develop the website such that I will be able to know all reservations made by each user.

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Secondly, how do I link my custom made reservation database and the security database in order to achieve my second plan above.?

Someone help me.

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hello i have the following problem

i have upload my content to hosting server but i get the following error

Security Exception

Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

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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.

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Good Day all,

Having an issue with an outside user accessing my IIS7 box. I do not have this problem when running the website from my host machine. I found this post: Http://forums.asp.net/t/1371394.aspx. I assure you that this is not a solution because I am not storing any of my files on a network share. 

What do you think my approach should be. 

I already have read rights to IIS user to my BIN folder. 

Thanks for the help. 

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Dear All i have created one simple service

like this

namespace WcfService2
        public class Service1 : IService1
        public string ShowEmpName(string strFirstName, string strLastName)
            return strFirstName + strLastName;

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after that i create one class file like this

namespace WcfService2
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Hi everybody

I'm creating a website where it must  be able to upload, crop and resize images. This works until I use transparent PNG images. When I upload a transparent PNG, the transparency becomes black. I've searched the whole internet, but found no solution so far. Can someone help me? This is my code. I'm working with MVC 2.

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