On Fri, 12 Apr 2002 08:46:12 -0500, Dave Serrano <[EMAIL PROTECTED]> wrote:
<snip/> >My question deals with if I want to change to the 'SecurityAction' from >'LinkDemand' to 'Demand'. Something like this: > ><StrongNameIdentityPermissionAttribute(SecurityAction.Demand, _ >PublicKey:="002400000480000094000...")> _ >Public Class myClass >... > > >I guess my assumption was that if I used 'SecurityAction.Demand' the CLR >would walk up the stack and check the private key of all assemblies in the >stack and throw an exception if one didn't match. This assumption is >obviously wrong. Even my most basic application of a simple Winform >instantiating the class fails when I use 'Demand' rather than 'LinkDemand'. >I get the following error: > >"Request for the permission of type >System.Security.Permissions.StrongNameIdentityPermission, mscorlib, >Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 >failed." > > >Can someone explain why the 'LinkDemand' but not the 'Demand' works for the >same application? My guess is that you're trying to instantiate myClass from a button event or something like that. In that case, the problem is that your button's event code is not the only caller in the stack. I reproduced your problem on my machine by creating a class that has a method "protected" by a strong name. When I try to create an instance of the class that contains the method, I get the error you see, and here's the call stack: System.Security.SecurityException: Request for the permission of type System.Security.Permissions.StrongNameIdentityPermission, mscorlib, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed. at System.Security.CodeAccessSecurityEngine.CheckTokenBasedSetHelper (Boolean ignoreGrants, TokenBasedSet grants, TokenBasedSet denied, TokenBasedSet demands) at System.Security.CodeAccessSecurityEngine.CheckSetHelper (PermissionSet grants, PermissionSet denied, PermissionSet demands) at StrongNameDemand.SND.CallMe() at StrongNameDemandTest.frmMain.btnCall_Click(Object sender, EventArgs e) at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) Since none of the methods before my btnCall_Click have the desired strong name, it fails. If I do the same thing from a Main method in a console app, the call succeeds. Regards, Jason You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.
