Hi all,
    I have a problem while working on a dotnet assembly control in a
web page. I wrote on interop group without any answer, and now i try
here.

   I'm tring to send codebehind the "css" style as an object. I
publish a propery of type "object" and I'm tying to cast this object
as a know type (because the type after the property population is
"system.__comobject").

  I tried add a recerence of the microsoft.mshtml library, in order to
find an appropriate class to cast my comobject but when I instanciated
each class inside this namespace I had a security permission error
like this:

************** Exception Text **************
System.Security.SecurityException: Request for the permission of type
'System.Security.Permissions.SecurityPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
failed.
   at
System.Security.CodeAccessSecurityEngine.ThrowSecurityException(Assembly
asm, PermissionSet granted, PermissionSet refused, RuntimeMethodHandle
rmh, SecurityAction action, Object demand, IPermission permThatFailed)
   at
System.Security.CodeAccessSecurityEngine.ThrowSecurityException(Object
assemblyOrString, PermissionSet granted, PermissionSet refused,
RuntimeMethodHandle rmh, SecurityAction action, Object demand,
IPermission permThatFailed)
   at
System.Security.CodeAccessSecurityEngine.CheckSetHelper(PermissionSet
grants, PermissionSet refused, PermissionSet demands,
RuntimeMethodHandle rmh, Object assemblyOrString, SecurityAction
action, Boolean throwException)
   at
System.Security.CodeAccessSecurityEngine.CheckSetHelper(CompressedStack
cs, PermissionSet grants, PermissionSet refused, PermissionSet
demands, RuntimeMethodHandle rmh, Assembly asm, SecurityAction action)
   at DotnetGrid.ManagedGrid.ManagedGrid_Load(Object sender, EventArgs
e)
   at System.Windows.Forms.UserControl.OnLoad(EventArgs e)
   at System.Windows.Forms.UserControl.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean
fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.UserControl.WndProc(Message& m)
   at
System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at
System.Windows.Forms.Control.ActiveXImpl.System.Windows.Forms.IWindowTarget.OnMessage(Message&
m)
   at
System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32
msg, IntPtr wparam, IntPtr lparam)
The action that failed was:
LinkDemand
The type of the first permission that failed was:
System.Security.Permissions.SecurityPermission
The Zone of the assembly that failed was:
Intranet


************** Loaded Assemblies **************
mscorlib
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
System
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
DotnetGrid
    Assembly Version: 1.0.0.18413
    Win32 Version: n/a
    CodeBase: http://localhost/managedgrid/gridassembly/DotnetGrid.dll
----------------------------------------
System.Windows.Forms
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.198 (QFE.050727-1900)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Web.Services
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Web.Services/2.0.0.0__b03f5f7f11d50a3a/System.Web.Services.dll
----------------------------------------
Accessibility
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
System.Xml
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Configuration
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Data
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
b3_k6knk
    Assembly Version: 1.0.0.18413
    Win32 Version: 2.0.50727.42 (RTM.050727-4200)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
Microsoft.mshtml
    Assembly Version: 7.0.3300.0
    Win32 Version: 7.0.3300.0
    CodeBase: file:///C:/WINDOWS/assembly/GAC/Microsoft.mshtml/7.0.3300.0__b03f5f7f11d50a3a/Microsoft.mshtml.dll
----------------------------------------

TIA for any help.

hi,
I have the same problem. I have permission problem when i try to access DOM.styleSheets.item(0).cssText

I tried with windows xp Pro Service pack 2 and i have no problem.

I tried with window xp familial and i have this problem.

i tried to import mshtml.tlb from internet explorer 7. The first time, the problem resolved. When i booted my computer, i tried again and i have always this problem.

Do you found the solution at this problem ??

Thank you

i***@kapabshop.com


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