Throws an Internet exception.
The context identifier for the operation that caused the error. The default value of dwContext is specified originally in CInternetSession and is passed to CInternetConnection- and CInternetFile-derived classes. For specific operations performed on a connection or a file, you usually override the default with a dwContext of your own. This value then is returned to CInternetSession::OnStatusCallback to identify the specific operation's status. For more information on context identifiers, see the article Internet First Steps: WinInet.
The error that caused the exception.