ASP in a Nutshell, 2nd Edition

Common Properties

All the objects in the CDONTS object model—except the NewMail object—share four common properties: Application, Class, Parent, and Session. These properties are all read-only. If you ascertain the value of the Application or Session properties from one CDO object, their values will be the same for any other object in the object model.

As you can see from the object model in Figure 15.1, the Session object is the highest object in the hierarchy. As such, it has no Parent or Session property values. These properties always have a value of Nothing for any Session object.

The NewMail object has none of these common properties. Any attempt to retrieve the value of any of the properties listed in Table 15.2 for a NewMail object results in a runtime error.

Table 15.2. Common Properties of CDO Objects

Property	Description
Application	Always contains the string value "Collaboration Data Objects for NTS Version 1.2." It represents the name of the application using the current session.
Class	An integer value representing the type of CDO object: cdoAddressEntry (8) = AddressEntry cdoAttachment (5) = Attachment cdoAttachments (18) =Attachments Collection cdoFolder (2) = Folder cdoMsg (3) = Message cdoMessages (16) = Messages Collection cdoRecipient (4) = Recipient cdoRecipients (17) = Recipients Collection cdoSession (0) = Session
Parent	The immediate parent object of the current object in the CDO object model. This is the parent according to the object ...