XmlnsDefinitionAttribute Class

Definition

Namespace:

System.Windows.Markup

Assembly:

System.Xaml.dll

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

[<System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=true)>]
type XmlnsDefinitionAttribute = class
    inherit Attribute

Public NotInheritable Class XmlnsDefinitionAttribute
Inherits Attribute

Inheritance

Object

Attribute

XmlnsDefinitionAttribute

Attributes

AttributeUsageAttribute

Remarks

Apply one or more XmlnsDefinitionAttribute attributes to assemblies in order to identify the types within the assembly for XAML usage.

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. Generally the XAML schema context supplies this information.

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.

In previous versions of the .NET Framework, this class existed in the WPF-specific assembly WindowsBase. In .NET Framework 4, XmlnsDefinitionAttribute is in the System.Xaml assembly. For more information, see Types Migrated from WPF to System.Xaml.

Constructors

XmlnsDefinitionAttribute(String, String)

Initializes a new instance of the XmlnsDefinitionAttribute class.

Properties

AssemblyName	Gets or sets the name of the assembly associated with the attribute.
ClrNamespace	Gets the string name of the CLR namespace specified in this attribute.
TypeId	When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute)
XmlNamespace	Gets the XAML namespace identifier specified in this attribute.

Methods

Equals(Object)	Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute)
GetHashCode()	Returns the hash code for this instance. (Inherited from Attribute)
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsDefaultAttribute()	When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute)
Match(Object)	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• XAML Namespace (x:) Language Features
• XAML-related CLR attributes for custom types and libraries
• Define custom types for use with .NET XAML Services
• XAML Services