Článek
11/18/2011

ExtensionPart Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Represents a zip file containing assemblies used by application library caching.

Inheritance Hierarchy

System.Object
  System.Windows.DependencyObject
    System.Windows.ExternalPart
      System.Windows.ExtensionPart

Namespace: System.Windows
Assembly: System.Windows (in System.Windows.dll)

Syntax

'Declaration
Public NotInheritable Class ExtensionPart _
    Inherits ExternalPart

public sealed class ExtensionPart : ExternalPart

<Deployment xmlns="https://schemas.microsoft.com/client/2007/deployment" ...>
  <Deployment.ExternalParts>
    <ExtensionPart Source="string" />
  </Deployment.ExternalParts>
</Deployment>

The ExtensionPart type exposes the following members.

Constructors

	Name	Description
	ExtensionPart	Initializes a new instance of the ExtensionPart class.

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Properties

	Name	Description
	Dispatcher	Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
	Source	Gets or sets the file name or URI of the external library package. (Overrides ExternalPart.Source.)

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Methods

	Name	Description
	CheckAccess	Determines whether the calling thread has access to this object. (Inherited from DependencyObject.)
	ClearValue	Clears the local value of a dependency property. (Inherited from DependencyObject.)
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetAnimationBaseValue	Returns any base value established for a Silverlight dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	GetValue	Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ReadLocalValue	Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.)
	SetValue	Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Fields

	Name	Description
	SourceProperty	Identifies the Source dependency property.

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Remarks

This class identifies entries in the Deployment.ExternalParts collection that represent external library packages required by an application at startup.

The Source property indicates the name of an application library package or an absolute URI that identifies an application library package. Files identified by name only are retrieved from the same server location as the .xap file.

For more information, see How to: Use Application Library Caching.

Note:
Files identified by URI must be on the same domain as the .xap file or on a domain with a cross-domain policy file. For more information, see HTTP Communication and Security with Silverlight.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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