C# 根据父类对象初始化子类

发布于 2024-09-02 06:48:37 字数 693 浏览 2 评论 0原文

所以基本上我有这个，

public class Ticket{
    public TicketNumber {get; set;}
    ..a bunch more properties...
}

我想使用像这样的子类添加一些属性，使用包含而不是组合。

public class TicketViewModel(Ticket ticket){
    //set each property from value of Ticket passed in
    this.TicketNumber = ticket.TicketNumber;
    ...a bunch more lines of code..

    //additional VM properties
    public SelectList TicketTypes {get; private set;}
}

如何实例化属性而不必像这样编写所有行

this.TicketNumber = ticket.TicketNumber;

是否有某种快捷方式？类似于子类构造函数中的东西？

this = ticket;

显然这不起作用，但这是他们的某种方式，所以如果向父类添加/删除属性，我不必修改我的子类？或者什么？

原文

So basically I have this

public class Ticket{
    public TicketNumber {get; set;}
    ..a bunch more properties...
}

I want to add some properties using a subclass like this using subsumption instead of composition.

public class TicketViewModel(Ticket ticket){
    //set each property from value of Ticket passed in
    this.TicketNumber = ticket.TicketNumber;
    ...a bunch more lines of code..

    //additional VM properties
    public SelectList TicketTypes {get; private set;}
}

How do I instantiate the properties without having to write all the lines like this

this.TicketNumber = ticket.TicketNumber;

Is there some kind of shortcut? Something like in the subclass constructor?

this = ticket;

Obviously this doesn't work but is their some way so I don't have to modify my subclass if addng/removing a property to the parent class? Or something?

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小镇女孩 2024-09-09 06:48:37

看看 Automapper

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梦幻的味道 2024-09-09 06:48:37

您可以在基类上创建一个构造函数，然后从继承者中调用它，如下所示：

public class Ticket{
    public string TicketNumber {get; set;}
    ..a bunch more properties...

    public Ticket (string ticketNumber, a bunch more values) {
         this.TicketNumber = ticketNumber;
         // a bunch more setters
    }
}

然后在继承类中只需执行以下操作：

public class TicketViewModel : Ticket {
     public string SomeOtherProperty { get; set; }

     public TicketViewModel(string ticketNumber, ..., string someOtherProperty)
          : base(ticketNumber, ....) 
     {
          this.SomeOtherProperty = someOtherProperty;
     }
}

You can create a constructor on your base class and then call that from the inheritor, like this:

public class Ticket{
    public string TicketNumber {get; set;}
    ..a bunch more properties...

    public Ticket (string ticketNumber, a bunch more values) {
         this.TicketNumber = ticketNumber;
         // a bunch more setters
    }
}

Then in your inheriting class simply do:

public class TicketViewModel : Ticket {
     public string SomeOtherProperty { get; set; }

     public TicketViewModel(string ticketNumber, ..., string someOtherProperty)
          : base(ticketNumber, ....) 
     {
          this.SomeOtherProperty = someOtherProperty;
     }
}

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