我想使用 Asp.net 核心流暢驗證阻止更新屬於對象的 FirstName 和 LastName 屬性

Question

這是我的輸入 DTO：

 public class IndividualInformation : IPerson
 {
     public string FirstName { get; set; }
     public string LastName { get; set; }
     public Address PrimaryAddress { get; set; }
     public DateTime? DateOfBirth { get; set; }
     public string CitizenShip { get; set; }
 }

當用戶嘗試使用 fluent 驗證更新名字和姓氏時，我想阻止它。

我需要寫什么規則才能做到這一點？

Answer 1

看起來您正在尋找不可變（只讀）屬性。 下面是一個例子：

 public class IndividualInformation : IPerson
 {
     public string FirstName { get; }
     public string LastName { get; }
     public Address PrimaryAddress { get; set; }
     public DateTime? DateOfBirth { get; set; }
     public string CitizenShip { get; set; }

    public IndividualInformation(string firstName, string lastName)
    {
        FirstName = firstName;
        LastName = lastName;
    }
 }

var info = new IndividualInformation("Jane", "Doe")
{
    PrimaryAddress = ...
};

info.FirstName = "John"; // this will throw an error

如果您啟用了 C# 9，您可以為此使用init屬性：

 public class IndividualInformation : IPerson
 {
     public string FirstName { get; init; }
     public string LastName { get; init; }
     public Address PrimaryAddress { get; set; }
     public DateTime? DateOfBirth { get; set; }
     public string CitizenShip { get; set; }
 }

var info = new IndividualInformation
{
    FirstName = "Jane",
    LastName = "Doe",
    PrimaryAddress = ...
};

info.FirstName = "John"; // this will throw an error