C# 为只读视图设计对象

在我当前的项目中，我有一个由其他自定义对象组成的类公司

 class Company {
     Address mailingAddress;
     Address physicalAddress;
     MailingTypes mailinTypes; 
     ...
 }

当用户搜索公司时，用户界面必须显示公司名称、地址和邮件类型。我可以在数据集或数据读取器中获取数据。我的问题是，我是否必须在迭代结果时创建Company和child对象，还是应该创建一个新的CompanyView结构，该结构只包含用于显示的字符串，如下所示？这是一个更好的方法

  class CompanyView {
      string MailingAddress;  
      string physicalAddress;
      ....
  }

谢谢，

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全金属

这实际上取决于结果的下游用途。在某些情况下，创建一个仅用于显示的字符串的新对象可能会有所帮助，尤其是在需要显示大量字符串的情况下

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但同时，另一种方法也会起作用。

覆盖Address类上的ToString方法，您将不需要创建新的CompanyView。

我正在处理一个具有类似功能的项目。我使用的是类似于：

class Company {
    Address _mailingAddress;
    [DisplayName("Mailing Address")]
    public string MailingAddress {
        get {
            if (_mailingAddress==null) {
                 return null;
            }
            return _mailingAddress.GetAdressString();
        }
    }
}

---

类

Address

应具有

getAddressString（）

方法，该方法应以适当的形式为您提取地址数据。

我希望我的客户端代码如下所示：

IAddress address = AddressFactory.MakeAddress("76 Main St", "3333", "CloseToNowhere");
Company c = Company.Make(address);
Console.WriteLine(c.MailingAddress.FullAddress);

public interface IAddress
{
    string Steet { get; }
    string ZipCode { get; }
    string City { get; }
}

public interface IMailingAddress : IAddress
{
    string FullAddress { get; }
}

public static class AddressFactory
{
    private class Address : IAddress
    {
        public string Steet { get; set; }
        public string ZipCode { get; set; }
        public string City { get; set; }
    }

    private class MailingAddress : Address, IMailingAddress
    {
        public string FullAddress
            { get { return string.Format("{0} {1} {2}", Steet, ZipCode, City); } }
    }

    static public IAddress MakeAddress(string street, string zip, string city)
        { return new Address() { Steet = street, ZipCode = zip, City = city }; }

    static public IMailingAddress MakeMailingAddress(IAddress address)
        { return new MailingAddress() { Steet = address.Steet, ZipCode = address.ZipCode, City = address.City }; }
}


public class Company
{
    private IAddress _address;

    private Company(IAddress address) { _address = address; }

    static public Company Make(IAddress address)
        { return new Company(address); }

    public IAddress Address
        { get { return _address; } }

    public IMailingAddress MailingAddress
        { get{return AddressFactory.MakeMailingAddress(_address);} }

}

我的后端代码如下：

IAddress address = AddressFactory.MakeAddress("76 Main St", "3333", "CloseToNowhere");
Company c = Company.Make(address);
Console.WriteLine(c.MailingAddress.FullAddress);

public interface IAddress
{
    string Steet { get; }
    string ZipCode { get; }
    string City { get; }
}

public interface IMailingAddress : IAddress
{
    string FullAddress { get; }
}

public static class AddressFactory
{
    private class Address : IAddress
    {
        public string Steet { get; set; }
        public string ZipCode { get; set; }
        public string City { get; set; }
    }

    private class MailingAddress : Address, IMailingAddress
    {
        public string FullAddress
            { get { return string.Format("{0} {1} {2}", Steet, ZipCode, City); } }
    }

    static public IAddress MakeAddress(string street, string zip, string city)
        { return new Address() { Steet = street, ZipCode = zip, City = city }; }

    static public IMailingAddress MakeMailingAddress(IAddress address)
        { return new MailingAddress() { Steet = address.Steet, ZipCode = address.ZipCode, City = address.City }; }
}


public class Company
{
    private IAddress _address;

    private Company(IAddress address) { _address = address; }

    static public Company Make(IAddress address)
        { return new Company(address); }

    public IAddress Address
        { get { return _address; } }

    public IMailingAddress MailingAddress
        { get{return AddressFactory.MakeMailingAddress(_address);} }

}

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这就是我最初的想法。但要填充company对象，我必须创建不必要的Address对象。这是最好的做法。我们分页，最大页面大小是50。这么多东西。因此，我将继续使用当前的公司对象。谢谢你的意见。谢谢你的回答。Address类有一个类似于GetAddressString（）的方法，我将使用它。Np，我使用这样的方法，并将List（我是您的案例）直接绑定到datagrid。