IInputChannel Interface
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Defines the interface that a channel must implement to receive a message.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
The IInputChannel type exposes the following members.
| 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.) |
| 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. |
| 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.) |
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.