DevForce 2010: xbap accessible entities

xbap accessible entities

Printed From: IdeaBlade
Category: DevForce
Forum Name: DevForce 2010
Forum Discription: For .NET 4.0
URL: http://www.ideablade.com/forum/forum_posts.asp?TID=1814
Printed Date: 03-Apr-2025 at 10:28pm

Topic: xbap accessible entities

Posted By: orcities
Subject: xbap accessible entities
Date Posted: 14-May-2010 at 1:50pm

I am trying to make my project xbap accessible as well as windows accessible. When I do I get the following error:

Inheritance security rules violated by type: 'LOC.AMP.Data.DomainModel.BaseEntity'. Derived types must either match the security accessibility of the base type or be less accessible.

I am assuming web does not have the same permission. Suggestions on how to work with this?

Replies:

Posted By: ting
Date Posted: 17-May-2010 at 5:11pm

Do you have an injected base class that is not public? That's the only thing I can think of that would cause that message.

Posted By: orcities
Date Posted: 17-May-2010 at 5:12pm

Nope:

[DataContract]

[KnownType(typeof(BaseEntity))]

public partial class BaseEntity : IbEm.Entity, IDXDataErrorInfo

{

Posted By: orcities
Date Posted: 17-May-2010 at 5:18pm

"Inheritance security rules violated by type: 'LOC.AMP.Data.DomainModel.BaseEntity'. Derived types must either match the security accessibility of the base type or be less accessible.":"LOC.AMP.Data.DomainModel.BaseEntity"

Stack:

   at System.Signature.GetSignature(SignatureStruct& signature, Void* pCorSig, Int32 cCorSig, RuntimeFieldHandleInternal fieldHandle, IRuntimeMethodInfo methodHandle, RuntimeType declaringType)
   at System.Reflection.RuntimePropertyInfo.get_Signature()
   at System.Reflection.RuntimePropertyInfo.get_PropertyType()
   at MS.Internal.Data.PropertyPathWorker.GetInfo(Int32 k, Object item, SourceValueState& svs)
   at MS.Internal.Data.PropertyPathWorker.ReplaceItem(Int32 k, Object newO, Object parent)
   at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
   at MS.Internal.Data.ClrBindingWorker.AttachDataItem()
   at System.Windows.Data.BindingExpression.Activate(Object item)
   at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
   at System.Windows.Data.BindingExpression.AttachOverride(DependencyObject target, DependencyProperty dp)
   at System.Windows.Data.BindingExpressionBase.Attach(DependencyObject target, DependencyProperty dp)
   at System.Windows.Data.BindingExpressionBase.OnAttach(DependencyObject d, DependencyProperty dp)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at System.Windows.Baml2006.WpfMemberInvoker.SetValue(Object instance, Object value)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)

[DataContract]

[KnownType(typeof(BaseEntity))]

public partial class BaseEntity : IbEm.Entity, IDXDataErrorInfo

{

....}

Posted By: ting
Date Posted: 17-May-2010 at 8:25pm

I did some poking around and .NET 4 has a lot of changes to partially trusted assemblies and code access security.

Try searching for:

"Inheritance security rules violated by type" .net 4

and

"Derived types must either match the security accessibility of the base type or be less accessible" .net 4

Many of the discussions point to adding this attribute to your assembly:

[assembly: System.Security.SecurityRules(System.Security.SecurityRuleSet.Level1)]

There's some other suggestions there that might be worth trying as well. Let us know what you find.

Posted By: orcities
Date Posted: 18-May-2010 at 7:19am

I added [assembly: System.Security.SecurityRules(System.Security.SecurityRuleSet.Level1)] to the DomainModel Assembly.cs file as well as the xbap app Assembly.cs file. This causes a new issue:

The type initializer for 'LOC.AMP.Data.DomainModel.EntityManager' threw an exception. which is thrown at the Login method of my LoginClientCore class.

INNER Exception:

Request failed

Stack:

at LOC.AMP.Data.DomainModel.EntityManager..cctor()

Method:

'((System.Security.SecurityException)(((System.Exception)($exception)).InnerException)).Method' threw an exception of type 'System.Security.SecurityException'

PermissionState:

'((System.Security.SecurityException)(((System.Exception)($exception)).InnerException)).PermissionState' threw an exception of type 'System.Security.SecurityException'

PermissionType:

{Name = "PermissionSet" FullName = "System.Security.PermissionSet"}

PermitOnlyInstance:

'((System.Security.SecurityException)(((System.Exception)($exception)).InnerException)).PermitOnlySetInstance' threw an exception of type 'System.Security.SecurityException'

RefusedSet:

'((System.Security.SecurityException)(((System.Exception)($exception)).InnerException)).RefusedSet' threw an exception of type 'System.Security.SecurityException'

Zone:

System.Security.SecurityZone.MyComputer

%28%28System.Security.SecurityException%29%28%28%28System.Exception%29%28$exception%29%29.InnerException%29%29.Url - URL:

'((System.Security.SecurityException)(((System.Exception)($exception)).InnerException)).Url' threw an exception of type 'System.Security.SecurityException'

Posted By: ting
Date Posted: 18-May-2010 at 5:19pm

This MSDN link talks about creating XBAPs in .NET 4 and how to create a Full-Trust XBAP:

http://msdn.microsoft.com/en-us/library/aa970060.aspx - http://msdn.microsoft.com/en-us/library/aa970060.aspx

Posted By: ruven
Date Posted: 27-Nov-2010 at 10:42am

A simple solution that works is:

Add the following line to the webconfig

...

...

</system.web>

Regards,

http://www.dilowa.co.za/ - www.dilowa.co.za