Appends the specified PropertyValueCollection object to this collection.
public int Add(
The PropertyValueCollection object to append to this collection.
An error occurred during the call to the underlying interface.
The property value is a null reference (Nothing in Visual Basic).
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.