XmlnsDefinitionAttribute Class


指定 XAML 命名空间与 CLR 命名空间之间按程序集进行的映射,然后 XAML 对象编写器或 XAML 架构上下文将其用于类型解析。Specifies a mapping on a per-assembly basis between a XAML namespace and a CLR namespace, which is then used for type resolution by a XAML object writer or XAML schema context.

public ref class XmlnsDefinitionAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true)]
public sealed class XmlnsDefinitionAttribute : Attribute
type XmlnsDefinitionAttribute = class
    inherit Attribute
Public NotInheritable Class XmlnsDefinitionAttribute
Inherits Attribute


将一个或多个 XmlnsDefinitionAttribute 特性应用于程序集,以便为 XAML 使用标识程序集中的类型。Apply one or more XmlnsDefinitionAttribute attributes to assemblies in order to identify the types within the assembly for XAML usage.

为了查找在 XAML 文件中返回对象元素用法或对象引用的相应类型,XAML 处理器会在 XmlnsDefinitionAttribute 应用程序中搜索每个引用的程序集。To find the appropriate types that back object element usages or object references in a XAML file, a XAML processor searches each referenced assembly for XmlnsDefinitionAttribute applications. 通常,XAML 架构上下文会提供此信息。Generally the XAML schema context supplies this information.

在 XAML 文件中,如果对象元素或属性元素的 xmlns 特性与 XmlnsDefinitionAttribute中的 XmlNamespace 匹配,则 XAML 处理器会使用存储在 AssemblyName 中的 ClrNamespaceXmlnsDefinitionAttribute,以针对程序集中的类型进行类型解析。In a XAML file, if the xmlns attribute for an object element or property element matches the XmlNamespace in the XmlnsDefinitionAttribute, the XAML processor uses the ClrNamespace and AssemblyName stored in the XmlnsDefinitionAttribute for type resolution against types in the assembly.

在 .NET Framework 的以前版本中,此类存在于 WPF 特定的程序集 WindowsBase 中。In previous versions of the .NET Framework, this class existed in the WPF-specific assembly WindowsBase. .NET Framework 4.NET Framework 4中,XmlnsDefinitionAttribute 在 system.exception 程序集中。In .NET Framework 4.NET Framework 4, XmlnsDefinitionAttribute is in the System.Xaml assembly. 有关详细信息,请参阅 Types Migrated from WPF to System.XamlFor more information, see Types Migrated from WPF to System.Xaml.


XmlnsDefinitionAttribute(String, String)

初始化 XmlnsDefinitionAttribute 类的新实例。Initializes a new instance of the XmlnsDefinitionAttribute class.



获取或设置与特性关联的程序集的名称。Gets or sets the name of the assembly associated with the attribute.


获取此属性中指定的 CLRCLR 命名空间的字符串名称。Gets the string name of the CLRCLR namespace specified in this attribute.


在派生类中实现时,获取此 Attribute 的唯一标识符。When implemented in a derived class, gets a unique identifier for this Attribute.

(Inherited from Attribute)

获取此属性中指定的 XAML 命名空间标识符。Gets the XAML namespace identifier specified in this attribute.



返回一个值,该值指示此实例是否与指定的对象相等。Returns a value that indicates whether this instance is equal to a specified object.

(Inherited from Attribute)

返回此实例的哈希代码。Returns the hash code for this instance.

(Inherited from Attribute)

获取当前实例的 TypeGets the Type of the current instance.

(Inherited from Object)

在派生类中重写时,指示此实例的值是否是派生类的默认值。When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(Inherited from Attribute)

当在派生类中重写时,返回一个指示此实例是否等于指定对象的值。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(Inherited from Object)

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

将一组名称映射为对应的一组调度标识符。Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

检索对象的类型信息,然后可以使用该信息获取接口的类型信息。Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)

检索对象提供的类型信息接口的数量(0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供对某一对象公开的属性和方法的访问。Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

Applies to

See also