public class Employee
{
   public int Id { get; set; }

   public string Name { get; set; }

   public string Number { get; set; }
}

var employeeData = DataHelper.ExecuteReader("Select Id, Name, Number from dbo.Employee");
var employees = new List<Employee>();
employees = employeeData.MapToList<List<Employee>>();

public static T MapToList<T>(this DataTable reader) where T : class
{
    Mapper.CreateMap<IDataReader, T>();
    //  Mapper.AssertConfigurationIsValid();
    return Mapper.Map<IDataReader, T>(reader.CreateDataReader());
}