创建通用类以更新几个类的属性

Question

我有一个asp.net核心应用程序，它使用带有以下属性的此类“ Form”：

public abstract class Form
{
    public string SentByName { get; set; }
    public string SentByEmail { get; set; }
    public DateTime ReceivedByDateTime { get; set; }
}

我有几个从该类继承的类（例如）：

public class Customer: Form
{
    public int Id { get; set; }
    public string FirstName{ get; set; }   
    public string Surname { get; set; }
}


public class Account: Form
{
    public int Id { get; set; }
    public string AccountIdentifier { get; set; }   
    public string AccountType { get; set; }
}

想法是将来自视图模型的数据传递到控制器上的create动作，并从视图模型属性中创建一个Customer实例，并在控制器中的某些逻辑旁边将值应用于从Form类继承的属性。

例如。

Customer thisForm = new Customer();

thisForm.FirstName = vm.FirstName;
thisForm.Surname= vm.Surname;
thisForm.SentByEmail = "ds@ds.com";
thisForm.SentByName = "DS";
thisForm.ReceivedByDateTime = DateTime.Now

_IMGP1DFC.Add(thisForm);

因此，您可以想象，对于给定模型进行创建的每个控制器操作，我将一遍又一遍地复制最后三行。

我想做的是创建某种通用服务，任何从Form继承的对象都可以传入，并用特定值更新这三个属性。

谁能告诉我如何创建一个可以接受客户或帐户的类，以便我可以用一个类更新这些相似的属性...例如

public class AttributeMapper {

   private SomeKindOfFormObject _aForm;   

   public AttributeMapper(SomeKindOfFormObject aForm) {
      _aForm = aForm;
   }

   public SomeKindOfFormObject mapIt () {
      _aForm.SentByEmail = ....
      ..... 
      return aForm;
   }
}

（最终，那些名称和电子邮件的硬编码值将被已认证的用户信息代替，因此我将不得不将其作为单独的问题带入服务中）

谢谢！

Answer 1

为什么不在构造函数中传递值

public abstract class Form
{
    public Form(string xx, string yy)
    {
        SentByName = xx;
        SentByEmail = yy;
        ReceivedByDateTime = Date.Now;
    }
}


public class Customer: Form
{
    public Customer(string xx, string yy) : base(xx,yy)
    {
    }

    public int Id { get; set; }
    public string FirstName{ get; set; }   
    public string Surname { get; set; }
}

然后

Customer thisForm = new Customer("DS","ds@ds.com" );
//if these values is special for Customer, setting them in constructor

thisForm.FirstName = vm.FirstName;
thisForm.Surname= vm.Surname;

_IMGP1DFC.Add(thisForm);

Answer 2

在Form中创建一个可填充属性的构造函数

public abstract class Form
{
    public string SentByName { get; set; }
    public string SentByEmail { get; set; }
    public DateTime ReceivedByDateTime { get; set; }
    public Form()
    {
        this.SentByEmail = "ds@ds.com";
        this.SentByName = "DS";
        this.ReceivedByDateTime = DateTime.Now
    }
}

然后使继承的构造函数像这样：

public class Customer: Form
{
    public int Id { get; set; }
    public string FirstName{ get; set; }   
    public string Surname { get; set; }
    public Customer() : base()
    {
    }
}

或者，如果您使用的是最新版本的C＃，请尝试以下操作：

public abstract class Form
{
    public string SentByName { get; set; } = "ds@ds.com";
    public string SentByEmail { get; set; } = "DS";
    public DateTime ReceivedByDateTime { get; set; } = DateTime.Now;
}