SignedCms Constructor (ContentInfo)
The constructor creates an instance of the SignedCms class by using the specified content information as the inner content.
Assembly: System.Security (in System.Security.dll)
A null reference was passed to a method that does not accept it as a valid argument.
For the default property values used with this constructor, see SignedCms().
If the detached state is false (the default), the content that is signed is included in the CMS/PKCS #7 message along with the signature information. If the detached state is true, clients that cannot decode S/MIME messages can still see the content of the message if it is sent separately. This might be useful in an archiving application that archives message content whether the message sender can be verified for authenticity.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.