ContactIDProperty Class

public sealed class ContactIDProperty : VCardProperty

Public NotInheritable Class ContactIDProperty
	Inherits VCardProperty

public ref class ContactIDProperty sealed : public VCardProperty

[<SealedAttribute>]
type ContactIDProperty = 
    class
        inherit VCardProperty
    end

Inheritance

Object    VCardProperty    ContactIDProperty

If the OriginalString is not null, it is copied unchanged into the vCard being written. This behavior can be undesirable when converting from one vCard version to another.

In this case, assign a new ContactIDProperty instance to the VCard — initialized with the value of the Comparer property of the ContactID thats stored as the Value of the current ContactIDProperty — in order to adapt the format (e.g., of Guids) to the new vCard version.

Reference