那些遇到过的问题

有没有理由拥有一个没有吸气剂的房产？

Con*_*ell 15 c# properties

我的经理问我,使用带有二传手的房产是否是一个好习惯,但没有吸气剂. 

public class PropertyWrapper
{   
    private MyClass _field;

    public MyClass Property
    {
        set { _field = value; } 
    }

    public string FirstProperty
    {
        get { return _field.FirstProperty; } 
    }

    public string SecondProperty
    {
        get { return _field.SecondProperty; } 
    }
}
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他将使用其他属性来公开由此setter设置的私有字段的属性.

我的建议是只使用一个私有字段并在构造函数中设置它,在这种情况下工作正常.如果我需要首先构建一个构造对象(甚至可能使用多态),我仍然会更喜欢一个Load方法,而不是一个getter-less属性.

但我很感兴趣.我们都非常关注最佳实践,并尝试确保我们的代码是标准化的.有没有人有关于无吸气剂属性的官方文章？或者更好 - 在.NET Framework本身中这种用法的一个例子？

Ale*_*kov 17

官方文章: 设计准则类库开发 - > 会员设计指南 - > 属性设计

不提供仅限设置的属性.

如果无法提供属性getter,请使用方法来实现该功能.方法名称应以Set开头,后跟属性名称.例如,AppDomain有一个名为SetCachePath的方法,而不是一个名为CachePath的只设置属性.

M.B*_*ock 9

考虑到的问题是:有没有人有关于无吸气剂属性的官方文章？或者更好 - 在.NET Framework本身中这种用法的一个例子？而不是意见; 我编写了一个快速测试应用程序来读取默认控制台应用程序中加载的所有类型的所有程序集的所有属性:

foreach (var assem in AppDomain.CurrentDomain.GetAssemblies())
{
    foreach (var type in assem.GetTypes())
    {
        foreach (var prop in type.GetProperties())
        {
            if (!prop.CanRead)
                Console.WriteLine("Assembly: {0}; Type: {1}; Property: {2}", assem.FullName, type.Name, prop.Name);
        }
    }
}
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结果是:

汇编:mscorlib,Version = 4.0.0.0,Culture = neutral,PublicKeyToken = b77a5c561934e089; 类型:FileIOAccess; 属性:PathDiscovery

汇编:mscorlib,Version = 4.0.0.0,Culture = neutral,PublicKeyToken = b77a5c561934e089; 类型:RedirectionProxy; 属性:ObjectMode

所以看起来框架很少使用它.我建议做同样的事情.

编辑

有趣的是,在附加调试器的情况下运行相同的代码会产生更多结果:

Assembly: mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: FileIOAccess; Property: PathDiscovery
Assembly: mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: RedirectionProxy; Property: ObjectMode
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: AxHost; Property: Site
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DataGridTextBoxColumn; Property: PropertyDescriptor
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DisplayedBandsData; Property: FirstDisplayedFrozenCol
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DisplayedBandsData; Property: FirstDisplayedFrozenRow
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DisplayedBandsData; Property: LastDisplayedFrozenCol
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DisplayedBandsData; Property: LastDisplayedFrozenRow
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DisplayedBandsData; Property: LastDisplayedScrollingRow
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ErrorProvider; Property: Site
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: WebBrowserBase; Property: Site
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: WebBrowser; Property: Site
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DropDownButton; Property: UseComboBoxTheme
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: GridErrorDlg; Property: Details
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: GridErrorDlg; Property: Message
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DropDownHolder; Property: ResizeUp
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: GridViewEdit; Property: DontFocus
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: GridViewEdit; Property: DisableMouseHook
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: MouseHook; Property: DisableMouseHook
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ManifestSignedXml; Property: Resolver
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ContainerProxy; Property: Bounds
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: RightToLeftProxy; Property: Bounds
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: TopDownProxy; Property: Bounds
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: BottomUpProxy; Property: Bounds
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ElementProxy; Property: Bounds
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: VerticalElementProxy; Property: Bounds
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: IconComparer; Property: SortOrder
Assembly: System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: MultiPropertyDescriptorGridEntry; Property: PropertyValue
Assembly: System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ConfigXmlDocument; Property: XmlResolver
Assembly: System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ConfigXmlDocument; Property: InnerText
Assembly: System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ProcessThread; Property: IdealProcessor
Assembly: System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ProcessThread; Property: ProcessorAffinity
Assembly: System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ConfigXmlAttribute; Property: InnerText
Assembly: System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ConfigXmlAttribute; Property: InnerXml
Assembly: System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: AnonymousPipeServerStream; Property: ReadMode
Assembly: System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: AnonymousPipeClientStream; Property: ReadMode
Assembly: System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: ManifestSignedXml; Property: Resolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlResolver; Property: Credentials
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlNullResolver; Property: Credentials
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlSecureResolver; Property: Credentials
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlUrlResolver; Property: Credentials
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlUrlResolver; Property: Proxy
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlUrlResolver; Property: CachePolicy
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlReaderSettings; Property: XmlResolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlTextReader; Property: XmlResolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlValidatingReader; Property: XmlResolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DocumentXmlWriter; Property: NamespaceManager
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DocumentXmlWriter; Property: Navigator
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: DocumentXmlWriter; Property: EndNode
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlAttribute; Property: InnerText
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlAttribute; Property: InnerXml
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlDocument; Property: XmlResolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlDocument; Property: InnerText
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlUnspecifiedAttribute; Property: InnerText
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlUnspecifiedAttribute; Property: InnerXml
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlPreloadedResolver; Property: Credentials
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XslTransform; Property: XmlResolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlSchemaSet; Property: XmlResolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XmlSchemaValidator; Property: XmlResolver
Assembly: System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; Type: XsdValidator; Property: Context
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  • @JoshuaDrake - 如果我们谈论 MS 的 C++ 或 JScript 实现，我会同意，但是当谈论 .NET 语言（他们设计的）时，没有更好的来源。 (2认同)

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