XmlDataProvider Class

Reference

Definition

Namespace:: System.Windows.Data

Assembly:: PresentationFramework.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Enables declarative access to XML data for data binding.

public ref class XmlDataProvider : System::Windows::Data::DataSourceProvider, System::Windows::Markup::IUriContext

[System.Windows.Localizability(System.Windows.LocalizationCategory.None, Readability=System.Windows.Readability.Unreadable)]
[System.Windows.Markup.ContentProperty("XmlSerializer")]
public class XmlDataProvider : System.Windows.Data.DataSourceProvider, System.Windows.Markup.IUriContext

[<System.Windows.Localizability(System.Windows.LocalizationCategory.None, Readability=System.Windows.Readability.Unreadable)>]
[<System.Windows.Markup.ContentProperty("XmlSerializer")>]
type XmlDataProvider = class
    inherit DataSourceProvider
    interface IUriContext

Public Class XmlDataProvider
Inherits DataSourceProvider
Implements IUriContext

Inheritance: Object

DataSourceProvider
XmlDataProvider

Attributes: LocalizabilityAttribute ContentPropertyAttribute

Implements: IUriContext

Remarks

Important

In a partial-trust sandbox, XmlDataProvider fails when it does not have permissions to access the given data. For more information about partial trust security, see WPF Partial Trust Security.

XmlDataProvider exposes the following ways to access XML data.

You can embed inline XML data using the XmlDataProvider class.
You can set the Source property to the Uri of an XML data file.
You can set the Document property to an XmlDocument.

XmlDataProvider performs a full refresh of all bindings when a XmlDocument.NodeChanged event occurs. There are no optimizations for specific nodes.

The XmlDataProvider.IsAsynchronous property is set to true by default, which means that the XmlDataProvider retrieves data and produces the collection of XML nodes asynchronously by default.

Constructors

XmlDataProvider()

Initializes a new instance of the XmlDataProvider class.

Properties

BaseUri	This type or member supports the WPF infrastructure and is not intended to be used directly from your code.
Data	Gets the underlying data object. (Inherited from DataSourceProvider)
Dispatcher	Gets or sets the current Dispatcher object to the UI thread to use. (Inherited from DataSourceProvider)
Document	Gets or sets the XmlDocument to use as the binding source.
Error	Gets the error of the last query operation. (Inherited from DataSourceProvider)
IsAsynchronous	Gets or sets a value that indicates whether node collection creation will be performed in a worker thread or in the active context.
IsInitialLoadEnabled	Gets or sets a value that indicates whether to prevent or delay the automatic loading of data. (Inherited from DataSourceProvider)
IsRefreshDeferred	Gets a value that indicates whether there is an outstanding DeferRefresh() in use. (Inherited from DataSourceProvider)
Source	Gets or sets the Uri of the XML data file to use as the binding source.
XmlNamespaceManager	Gets or sets the XmlNamespaceManager used to run XPath queries.
XmlSerializer	Gets the inline XML content.
XPath	Gets or sets the `XPath` query used to generate the data collection.

Methods

BeginInit()	Indicates that initialization of this object is about to begin; no implicit Refresh() occurs until the matched EndInit() method is called. (Inherited from DataSourceProvider)
BeginQuery()	Prepares the loading of either the inline XML or the external XML file to produce a collection of XML nodes.
DeferRefresh()	Enters a defer cycle that you can use to change properties of the provider and delay automatic refresh. (Inherited from DataSourceProvider)
EndInit()	Indicates that the initialization of this element has completed; this causes a Refresh() if no other DeferRefresh() is outstanding.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
InitialLoad()	Starts the initial query to the underlying data model. The result is returned on the Data property. (Inherited from DataSourceProvider)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
OnPropertyChanged(PropertyChangedEventArgs)	Raises the PropertyChanged event with the provided arguments. (Inherited from DataSourceProvider)
OnQueryFinished(Object, Exception, DispatcherOperationCallback, Object)	Derived classes call this method to indicate that a query has finished. (Inherited from DataSourceProvider)
OnQueryFinished(Object)	Derived classes call this method to indicate that a query has finished. (Inherited from DataSourceProvider)
Refresh()	Initiates a refresh operation to the underlying data model. The result is returned on the Data property. (Inherited from DataSourceProvider)
ShouldSerializeSource()	Indicates whether the Source property should be persisted.
ShouldSerializeXmlSerializer()	Indicates whether the XmlSerializer property should be persisted.
ShouldSerializeXPath()	Indicates whether the XPath property should be persisted.
ToString()	Returns a string that represents the current object. (Inherited from Object)

Events

DataChanged	Occurs when the Data property has a new value. (Inherited from DataSourceProvider)
PropertyChanged	Occurs when a property value changes. (Inherited from DataSourceProvider)

Explicit Interface Implementations

INotifyPropertyChanged.PropertyChanged	Occurs when a property value changes. (Inherited from DataSourceProvider)
ISupportInitialize.BeginInit()	This member supports the Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code. (Inherited from DataSourceProvider)
ISupportInitialize.EndInit()	This member supports the Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code. (Inherited from DataSourceProvider)
IUriContext.BaseUri	This member supports the Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code.

Applies to

Jaa