Use the Add method to add an existing ParserError object to the collection. You cannot add the same ParserError object to the collection more than once. When you call the Add method using a ParserError object that is already in the collection, the addition fails and -1 is returned.
To add multiple objects to the collection, use the AddRange method.
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)