List<Field> fields = new List<Field>();
fields.Add(new Field("A", 1));

boxListFields.Items.Clear();
boxListFields.DataSource = fields;
boxListFields.ValueMember = "Length";
boxListFields.DisplayMember = "Name";

List<string> myList = new List<string>();
myList.Add("Item 1");
myList.Add("Item 2");
myList.Add("Item 3");

myListBox.DataSource = myList;

myList.Add("No records found.");