Why is the To property of .net's MailMessage class read-only?

Question

I've got a MailAddressCollection that contains all the addresses I want to send an email to, but instead of being able to simply have:

myMessage.To = myMailAddressCollection;

I have to do:

foreach (MailAddress address in myMailAddressCollection)  
{  
    myMessage.To.Add(address);  
}

Can anyone shed any light on why the class is configured like that? Am I missing some other way of being able to assign to the To, CC or Bcc properties?

Answer 1

I know this is old but in case someone else stumbles across it:

MailAddressCollection.Add can accept a comma delimited string of email addresses. MailAddressCollection.ToString Method returns a comma delimited string of the contained email addresses.

So the OP could have done this:

myMessage.To.Add(myMailAddressCollection.ToString());

An AddRange method would still be preferred.