XmlnsDictionary Class

Definition

Namespace:

System.Windows.Markup

Assembly:

PresentationFramework.dll

Represents a dictionary that contains xmlns mappings for XAML namespaces in WPF.

public ref class XmlnsDictionary : System::Collections::IDictionary, System::Xaml::IXamlNamespaceResolver

public class XmlnsDictionary : System.Collections.IDictionary, System.Xaml.IXamlNamespaceResolver

type XmlnsDictionary = class
    interface ICollection
    interface IEnumerable
    interface IDictionary
    interface IXamlNamespaceResolver

Public Class XmlnsDictionary
Implements IDictionary, IXamlNamespaceResolver

Inheritance

Object

XmlnsDictionary

Implements

ICollection IDictionary IEnumerable IXamlNamespaceResolver

Remarks

XmlnsDictionary maps XAML namespace prefixes to the complete XAML namespace URI. For XAML usage in applications and XAML namespaces in general, the URI is often not a schema-style URI that includes http://. It is instead a user-defined mapping to a CLR namespace and assembly. That assembly contains the backing types being referred to. For details, see XAML Namespaces and Namespace Mapping for WPF XAML.

The XmlnsDictionary adds the concept of scope for a XAML namespace. A default IDictionary might contain prefix keys and XML namespace URI values. The scope concept in XmlnsDictionary parallels the XML concept that a prefix might be redefined. If so, the redefinition only applies at that level or below in a DOM view of the XML (the previous definition applies at higher level in the DOM). The scope concept is mostly abstracted away in the XmlnsDictionary API, such that you can call APIs such as LookupNamespace without being concerned about scope. However, XmlnsDictionary does expose PushScope and PopScope so that a custom ParserContext implementation that changes scope can synchronize with the scope for the XmlnsDictionary.

Constructors

Name	Description
XmlnsDictionary()	Initializes a new instance of the XmlnsDictionary class.
XmlnsDictionary(XmlnsDictionary)	Initializes a new instance of the XmlnsDictionary class by using the specified dictionary as a copy source.

Properties

Name	Description
Count	Gets the number of items in the XmlnsDictionary.
IsFixedSize	Gets a value that indicates whether the size of the XmlnsDictionary is fixed.
IsReadOnly	Gets a value that indicates whether the XmlnsDictionary is read-only.
IsSynchronized	Gets a value that indicates whether access to this XmlnsDictionary is thread safe.
Item[Object]	Gets or sets the XAML namespace URI associated with the specified prefix.
Item[String]	Gets or sets the XAML namespace URI associated with the specified prefix.
Keys	Gets a collection of all the keys in the XmlnsDictionary.
Sealed	Gets a value that indicates whether the XmlnsDictionary is sealed.
SyncRoot	Gets an object that can be used to synchronize access to the XmlnsDictionary.
Values	Gets a collection of all the values in the XmlnsDictionary.

Methods

Name	Description
Add(Object, Object)	Adds a prefix-URI pair to this XmlnsDictionary.
Add(String, String)	Adds a prefix-URI pair to this XmlnsDictionary.
Clear()	Removes all entries from this XmlnsDictionary.
Contains(Object)	Returns a value that indicates whether the specified prefix key is in this XmlnsDictionary.
CopyTo(Array, Int32)	Copies the entries in the XmlnsDictionary to the specified array.
CopyTo(DictionaryEntry[], Int32)	Copies the entries in the XmlnsDictionary to the specified DictionaryEntry array.
DefaultNamespace()	Looks up the XAML namespace that corresponds to the default XAML namespace.
GetDictionaryEnumerator()	Returns a dictionary enumerator that iterates through this XmlnsDictionary.
GetEnumerator()	Returns an enumerator that iterates through this XmlnsDictionary.
GetNamespace(String)	Retrieves a XAML namespace for the provided prefix string.
GetNamespacePrefixes()	Returns all possible prefix-XAML namespace mappings (NamespaceDeclaration values) that are available in the active schema context.
LookupNamespace(String)	Returns the XAML namespace URI that corresponds to the specified XML namespace prefix.
LookupPrefix(String)	Returns the prefix that corresponds to the specified XAML namespace URI.
PopScope()	Pops the scope of the XmlnsDictionary.
PushScope()	Pushes the scope of the XmlnsDictionary.
Remove(Object)	Removes the item with the specified prefix key from the XmlnsDictionary.
Remove(String)	Removes the item with the specified prefix key from the XmlnsDictionary.
Seal()	Locks the dictionary so that it cannot be changed.

Explicit Interface Implementations

Name	Description
IDictionary.GetEnumerator()	For a description of this member, see GetEnumerator().
IEnumerable.GetEnumerator()	For a description of this member, see GetEnumerator().

See also

• ResourceDictionary