Articolo
11/18/2011

CaptureDevice Class

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

Provides common properties for AudioCaptureDevice and VideoCaptureDevice.

Inheritance Hierarchy

System.Object
  System.Windows.DependencyObject
    System.Windows.Media.CaptureDevice
      System.Windows.Media.AudioCaptureDevice
      System.Windows.Media.VideoCaptureDevice

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

Syntax

'Declaration
Public Class CaptureDevice _
    Inherits DependencyObject

public class CaptureDevice : DependencyObject

The CaptureDevice type exposes the following members.

Properties

	Name	Description
	Dispatcher	Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
	FriendlyName	Gets the UI display name for the capture device.
	IsDefaultDevice	Gets a value that declares whether the capture device is the default device for its type (audio or video).

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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
	FriendlyNameProperty	Identifies the FriendlyName dependency property.
	IsDefaultDeviceProperty	Identifies the IsDefaultDevice dependency property.

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Remarks

The properties of CaptureDevice are mainly used to determine how that device is represented in the Silverlight configuration dialog box on the Webcam / Mic tab. Other properties that are more specific to working with captured data as part of a sink implementation are instead declared on either AudioCaptureDevice or VideoCaptureDevice.

Example scenarios for using CaptureDevice properties include prompting users to change either audio or video devices in their configuration UI. You might prompt the user to change settings if there are alternatives reported by GetAvailableAudioCaptureDevices or GetAvailableVideoCaptureDevices that would work, for cases where the current default device (GetDefaultAudioCaptureDevice, GetDefaultVideoCaptureDevice) is not supported. You can also display strings in the UI, for example, a button with localizable text "Capture video from * device" where * is the FriendlyName.

Version Information

Silverlight

Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

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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