Quickest way to get the value of a date with a custom label?
<p>In Contacts I have set up a Date field with a custom label (when editing a contact you select Add Field-> Date -> Anniversary -> Add Custom Label).</p>

<p>This is stored in the ABMultiValue property of ID 'kABPersonDateProperty' with a label of (for example) 'Next Appointment'.</p>

<p>The ABMultiValue API has functions to tell me the label name at an index, read the value at an index and convert between ID/Index.</p>

<p>Please forgive me if I am being thick here but is the quickest way to get the date of the 'Next Appointment' to iterate the Multivalue field looking for the index of a matching label then copy the value of the property at that index?  From what I can tell, the index will vary from record to record.</p>

<p>I realise there is a function to get an index from a property ID, but that means that at some point earlier I will have to have discovered the propertyID by going through all the records trying to find one with the 'Next Appointment' field in it to get its propertyid.</p>

<p>I want to view the date in a tableview and sort on it so I need to get the value as efficiently as possible.  Has anyone got a method of doing this quickly, preferably with example code or a link for further info?</p>
