public class UserObjectImportOptions : ImportOptions 

var workbook = Workbook.Create("test.xlsx" );

var worksheet = workbook.Worksheets[ 0 ];

// Define a list of user objects, the import options (vertical by default, specify PropertyNames and show propertyNames) and call the ImportData function.

  var userObjectData = new List<Player>()
  {
    new Player() { Name = "Tom Sawyer", Team = Team.Miami_Ducks, Number = 9 },
    new Player() { Name = "Mike Smith", Team = Team.Chicago_Hornets, Number = 18 },
    new Player() { Name = "Kelly Tomson", Team = Team.LosAngelese_Raiders, Number = 33 },
    new Player() { Name = "John Graham", Team = Team.NewYork_Bucs, Number = 7 },
  };

  var userObjectImportOptions = new UserObjectImportOptions() { DestinationTopLeftAddress = "H5", PropertyNames = new string[] { "Name", "Team" }, IsPropertyNamesShown = true };
  worksheet.ImportData( userObjectData, userObjectImportOptions );

workbook.Save();

private class Player
  {
    public string Name { get; set; }

    public int Number { get; set; }

    public Team Team { get; set; }
  }