Gets or sets the denied security permission, permission set, or permission set collection that caused a demand to fail.
Assembly: mscorlib (in mscorlib.dll)
This property contains the denied permission, permission set, or permission set collection that caused the security check to fail. It is null for exceptions that are not caused by a Deny. The property is of type Object because it can contain a permission, a permission set, or a permission set collection. To test the run-time type of this property, you can use the GetType method or a specific language operator, such as the is operator in C# or the TypeOf operator in Visual Basic.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.