Sending a list to a web service

I have an object that contains a list of Email addresses and EmailIDs.

Code:

---

public class DataObjects
    {
        public class UserEmails
        {
            private string _Email;
            public string Email
            {
                get { return _Email; }
                set { _Email = value; }
            }

            private int _EmailID;
            public int EmailID
            {
                get { return _EmailID; }
                set { _EmailID = value; }
            }
        }
    }

---

And I populate it like this:

Code:

---

protected void GetEmails()
    {
        DataAccess da = new DataAccess(); //this is a separate Data Access class with loads of methods to access the database

        List<DataObjects.UserEmails> myUserEmailsList = new List<DataObjects.UserEmails>(); //create a list of UserEmails objects

        myUserEmailsList = da.getUserEmails(1); //this passes in a UserID to the data access function that returns me a list of emails for this user

        myPassedList(myUserEmailsList); //I pass the list to another function just to prove the data is there and can be retrieved.
    }

---

The last line in GetEmails passes the list to myPassedList

Code:

---

protected void myPassedList(IList EmailsList)
    {
        foreach (DataObjects.UserEmails myUserEmails in EmailsList) //loop through the list to prove it is populated etc.
        {
            int EmailID = myUserEmails.EmailID;
            string Email = myUserEmails.Email;
        }
    }

---

Everything above works fine. Here's the question. When I am at the point where I have populated the List of UserEmails - I need to pass it to a web service for someone else to access the data.

I pass my list to a function and I can loop through it by writing:

foreach (DataObjects.UserEmails myUserEmails in EmailsList)

which is fine, for me, because my application knows what DataObjects.UserEmails means ... the people receiving the list won't. They are just getting a list.

Can they loop through the list I pass them without knowing the structure of the object in the list and just extract the data?

Thanks for any help.

The person who created that webservice has probably created the specs, if you follow those specs, the other side can handle your data