ExtendedProperties.Add method

[CAPICOM is a 32-bit only component that is available for use in the following operating systems: Windows Server 2008, Windows Vista, and Windows XP. Instead, use Platform Invocation Services (PInvoke) to call the Win32 API function CertGetCertificateContextProperty and obtain the properties. For information about PInvoke, see Platform Invoke Tutorial. The .NET and CryptoAPI via P/Invoke: Part 1 and .NET and CryptoAPI via P/Invoke: Part 2 subsections of Extending .NET Cryptography with CAPICOM and P/Invoke may also be helpful.]

The Add method adds an extended property to the collection.


ExtendedProperties.Add( _
  ByVal valProperty _


valProperty [in]

An ExtendedProperty object that represents the extended property.

Return value

This method does not return a value.


Requirement Value
End of client support
Windows Vista
End of server support
Windows Server 2008
CAPICOM 2.0 or later on Windows Server 2003 and Windows XP