CSharp: Classes, Structures, And Records in c# 10(donet 6)

#region Record Types Record Class  in C# 10
 /// <summary>
 /// Positional parameters syntax
 /// 位置参数的语法
 /// </summary>
 /// <param name="EmployeeId"></param>
 /// <param name="FirstName"></param>
 /// <param name="LastName"></param>
 public record Employee(string EmployeeId, string FirstName, string LastName);
 /// <summary>
 /// Standard property syntax
 /// 标准属性的语法
 /// </summary>
 public record DuEmployee
 {
     public string EmployeeId { get; init; }
     public string FirstName { get; init; }
     public string LastName { get; init; }
 }
 #endregion
 
 
 #region  Record Structures
 
 /// <summary>
 /// Positional parameters syntax
 /// 位置参数的语法
 /// </summary>
 /// <param name="EmployeeId"></param>
 /// <param name="FirstName"></param>
 /// <param name="LastName"></param>
 public readonly record struct GeovinEmployee(string EmployeeId, string FirstName, string LastName);
 
 /// <summary>
 /// Standard property syntax
 /// 标准属性的语法
 /// </summary>
 public readonly record struct GeovinDuEmployee
 {
     public string EmployeeId { get; init; }
     public string FirstName { get; init; }
     public string LastName { get; init; }
 }
 
 #endregion
 
 #region Record Class
 /// <summary>
 /// Positional parameters syntax
 /// 位置参数的语法
 /// </summary>
 /// <param name="EmployeeId"></param>
 /// <param name="FirstName"></param>
 /// <param name="LastName"></param>
 public record TuEmployee(string EmployeeId, string FirstName, string LastName)
 {
     public string Designation { get; set; }
 }
 /// <summary>
 /// Standard property syntax
 /// 标准属性的语法
 /// </summary>
 public record TujuEmployee
 {
     public string EmployeeId { get; init; }
     public string FirstName { get; init; }
     public string LastName { get; init; }
     public string Designation { get; set; }
 }
 
 #endregion
 
 #region The record structs
 /// <summary>
 /// Positional parameters syntax
 /// 位置参数的语法
 /// </summary>
 /// <param name="EmployeeId"></param>
 /// <param name="FirstName"></param>
 /// <param name="LastName"></param>
 /// <param name="Designation"></param>
 public record struct TujuwenEmployee(string EmployeeId, string FirstName, string LastName, string Designation);
 
 /// <summary>
 /// Standard property syntax
 /// 标准属性的语法
 /// </summary>
 public record struct LukEmployee
 {
     public string EmployeeId { get; init; }
     public string FirstName { get; init; }
     public string LastName { get; init; }
     public string Designation { get; set; }
 }
 
 
 #endregion

Employee employee = new("E001", "Geovin", "Du");
            Console.WriteLine(employee);
 
            DuEmployee duemployee = new DuEmployee()
            {
                EmployeeId = "E001",
                FirstName = "聚文",
                LastName = "涂"
            };
            Console.WriteLine(duemployee);
 
            GeovinEmployee geovinemployee = new("E001", "Geovin", "Du");
            Console.WriteLine(geovinemployee);
            GeovinDuEmployee geovinduemployess = new GeovinDuEmployee()
            {
                EmployeeId = "E001",
                FirstName = "聚文",
                LastName = "涂"
            };
 
            Console.WriteLine(geovinduemployess);
 
            TuEmployee tuemployee = new("E001", "聚文", "涂") { Designation = "软件工程师" };
 
            Console.WriteLine(tuemployee);
 
            TujuEmployee tujuemployee = new TujuEmployee()
            {
                EmployeeId = "E001",
                FirstName = "Geovin",
                LastName = "Du",
                Designation = "Software Engineer"
            };
 
            Console.WriteLine(tujuemployee);
 
            TujuwenEmployee tujuwenemployee = new("E001", "Geovin", "Du", "软件工程师");
 
            Console.WriteLine(tujuwenemployee);
 
            LukEmployee lukemployee = new LukEmployee
            {
                EmployeeId = "E001",
                FirstName = "聚文",
                LastName = "涂",
                Designation = "Software Engineer"
            };
 
            Console.WriteLine(lukemployee);

Employee { EmployeeId = E001, FirstName = Geovin, LastName = Du }
DuEmployee { EmployeeId = E001, FirstName = 聚文, LastName = 涂 }
GeovinEmployee { EmployeeId = E001, FirstName = Geovin, LastName = Du }
GeovinDuEmployee { EmployeeId = E001, FirstName = 聚文, LastName = 涂 }
TuEmployee { EmployeeId = E001, FirstName = 聚文, LastName = 涂, Designation = 软件工程师 }
TujuEmployee { EmployeeId = E001, FirstName = Geovin, LastName = Du, Designation = Software Engineer }
TujuwenEmployee { EmployeeId = E001, FirstName = Geovin, LastName = Du, Designation = 软件工程师 }
LukEmployee { EmployeeId = E001, FirstName = 聚文, LastName = 涂, Designation = Software Engineer }