Článek
11/18/2011

IInputChannel Interface

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

Defines the interface that a channel must implement to receive a message.

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

Syntax

'Declaration
Public Interface IInputChannel _
    Inherits IChannel, ICommunicationObject

public interface IInputChannel : IChannel, 
    ICommunicationObject

The IInputChannel type exposes the following members.

Properties

	Name	Description
	LocalAddress	Gets the address on which the input channel receives messages.
	State	Gets the current state of the communication-oriented object. (Inherited from ICommunicationObject.)

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Methods

	Name	Description
	Abort	Causes a communication object to transition immediately from its current state into the closed state. (Inherited from ICommunicationObject.)
	BeginClose(AsyncCallback, Object)	Begins an asynchronous operation to close a communication object. (Inherited from ICommunicationObject.)
	BeginClose(TimeSpan, AsyncCallback, Object)	Begins an asynchronous operation to close a communication object with a specified time-out. (Inherited from ICommunicationObject.)
	BeginOpen(AsyncCallback, Object)	Begins an asynchronous operation to open a communication object. (Inherited from ICommunicationObject.)
	BeginOpen(TimeSpan, AsyncCallback, Object)	Begins an asynchronous operation to open a communication object within a specified interval of time. (Inherited from ICommunicationObject.)
	BeginReceive(AsyncCallback, Object)	Begins an asynchronous operation to receive a message that has a state object associated with it.
	BeginReceive(TimeSpan, AsyncCallback, Object)	Begins an asynchronous operation to receive a message that has a specified time out and state object associated with it.
	BeginTryReceive	Begins an asynchronous operation to receive a message that has a specified time out and state object associated with it.
	BeginWaitForMessage	Begins an asynchronous wait-for-a-message-to-arrive operation that has a specified time out and state object associated with it.
	Close()	Causes a communication object to transition from its current state into the closed state. (Inherited from ICommunicationObject.)
	Close(TimeSpan)	Causes a communication object to transition from its current state into the closed state. (Inherited from ICommunicationObject.)
	EndClose	Completes an asynchronous operation to close a communication object. (Inherited from ICommunicationObject.)
	EndOpen	Completes an asynchronous operation to open a communication object. (Inherited from ICommunicationObject.)
	EndReceive	Completes an asynchronous operation to receive a message.
	EndTryReceive	Completes the specified asynchronous operation to receive a message.
	EndWaitForMessage	Completes the specified asynchronous wait-for-a-message operation.
	GetProperty<T>	Returns a typed object requested, if present, from the appropriate layer in the channel stack. (Inherited from IChannel.)
	Open()	Causes a communication object to transition from the created state into the opened state. (Inherited from ICommunicationObject.)
	Open(TimeSpan)	Causes a communication object to transition from the created state into the opened state within a specified interval of time. (Inherited from ICommunicationObject.)
	Receive()	Returns the message received, if one is available. If a message is not available, blocks for a default interval of time.
	Receive(TimeSpan)	Returns the message received, if one is available. If a message is not available, blocks for a specified interval of time.
	TryReceive	Tries to receive a message within a specified interval of time.
	WaitForMessage	Returns a value that indicates whether a message has arrived within a specified interval of time.

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Events

	Name	Description
	Closed	Occurs when the communication object completes its transition from the closing state into the closed state. (Inherited from ICommunicationObject.)
	Closing	Occurs when the communication object first enters the closing state. (Inherited from ICommunicationObject.)
	Faulted	Occurs when the communication object first enters the faulted state. (Inherited from ICommunicationObject.)
	Opened	Occurs when the communication object completes its transition from the opening state into the opened state. (Inherited from ICommunicationObject.)
	Opening	Occurs when the communication object first enters the opening state. (Inherited from ICommunicationObject.)

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Remarks

The IInputChannel contract includes synchronous and asynchronous variants of receive, try-to-receive and wait-for-a-message functionality.

The pull model is used typically with an IInputChannel to receive messages: you call Receive (to "pull" a message out of the channel) and then wait for a message to arrive. An alternative usage pattern is to call BeginWaitForMessage(TimeSpan, AsyncCallback, Object) or BeginWaitForMessage(TimeSpan, AsyncCallback, Object), and then call Receive(TimeSpan). This approach is common for transactional usages where you start the transaction between the calls to WaitForMessage(TimeSpan) and Receive.

An IInputChannel is not necessarily bound to a single sender. Other channels and channel interfaces can provide a correlation between particular senders and an IInputChannel, but the base contract makes no such restriction. An implementation can create a new IInputChannel for each message or reuse the same IInputChannel for multiple messages and senders.

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.

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