Článek
11/18/2011

OperationContextScope Class

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

Creates a block within which an OperationContext object is in scope.

Inheritance Hierarchy

System.Object
System.ServiceModel.OperationContextScope

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

Syntax

'Declaration
Public NotInheritable Class OperationContextScope _
    Implements IDisposable

public sealed class OperationContextScope : IDisposable

The OperationContextScope type exposes the following members.

Constructors

	Name	Description
	OperationContextScope(IContextChannel)	Initializes a new instance of the OperationContextScope class that uses the specified IContextChannel to create a new OperationContext for the scope.
	OperationContextScope(OperationContext)	Initializes a new instance of the OperationContextScope class to create a scope for the specified OperationContext object.

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Methods

	Name	Description
	Dispose	Restores the original OperationContext to the active context and recycles the OperationContextScope object.
	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.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

Use the OperationContextScope class to create a scope for a specific OperationContext object or a scope for a new OperationContext object using a specified IContextChannel object. An OperationContextScope can be used in a Windows Communication Foundation (WCF) service as well as in a Silverlight 5 client application.

After the OperationContextScope object has established the current operation context, you can use the OperationContext to:

Access and modify incoming and outgoing message headers and other properties.
Access the runtime, including dispatchers, the host, channel, and extensions.
Access other types of contexts, such as security, instance, and request contexts.
Access the channel associated with the OperationContext object or (if the channel implements System.ServiceModel.Channels.ISession) the associated channel's session identifier.

When an OperationContextScope is created, the current OperationContext is stored and the new OperationContext becomes the one returned by the Current property. When the OperationContextScope is disposed of, the original OperationContext is restored.

Examples

The following example shows how to use the OperationContextScope to create a new context in a client application to add a custom header to the outgoing message.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

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

XNA Framework

Supported in: 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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