C#

<br />
public class User<br />
{<br />
  string _fname;<br />
  string _lname;<br />
  public User(string FName, string LName)<br />
  {<br />
    _fname = FName;<br />
    _lname = LName;<br />
  }<br />
  public override string ToString()<br />
  {<br />
    return string.Format("{0}, {1}", _lname, _fname);<br />
  }<br />
}<br />
<br />
//--- your combo init method in form<br />
private void form2_Load(object s, System.EventArgs e)<br />
{<br />
  User[] arUsers = new User[2];<br />
  arUsers[0] = new User("John","Smith");<br />
  arUsers[1] = new User("Jane","Smith");<br />
  this.comboBox1.Items.AddRange(arUsers);;<br />
}<br />