using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace StudentProgressRecord.Entity { public class Group { public long Id { get; set; } public string GroupName { get; set; } public long DepartmentId { get; set; } public static Group CreateGroup(long id, string groupName, long departmentId) { return new Group { Id = id, GroupName = groupName, DepartmentId = departmentId }; } } }