本文整理匯總了C#中System.Messaging.MessageQueue.BeginPeek方法的典型用法代碼示例。如果您正苦於以下問題：C# MessageQueue.BeginPeek方法的具體用法？C# MessageQueue.BeginPeek怎麽用？C# MessageQueue.BeginPeek使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Messaging.MessageQueue的用法示例。
在下文中一共展示了MessageQueue.BeginPeek方法的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: Main
//引入命名空間
using System;
using System.Messaging;
public class QueueExample
{
// Represents a state object associated with each message.
static int messageNumber = 0;
public static void Main()
{
// Create a non-transactional queue on the local computer.
// Note that the queue might not be immediately accessible, and
// therefore this example might throw an exception of type
// System.Messaging.MessageQueueException when trying to send a
// message to the newly created queue.
CreateQueue(".\\exampleQueue", false);
// Connect to a queue on the local computer.
MessageQueue queue = new MessageQueue(".\\exampleQueue");
// Send a message to the queue.
queue.Send("Example Message");
// Begin the asynchronous peek operation.
queue.BeginPeek(TimeSpan.FromSeconds(10.0), messageNumber++,
new AsyncCallback(MyPeekCompleted));
// Simulate doing other work on the current thread.
System.Threading.Thread.Sleep(TimeSpan.FromSeconds(10.0));
return;
}
// Creates a new queue.
public static void CreateQueue(string queuePath, bool transactional)
{
if(!MessageQueue.Exists(queuePath))
{
MessageQueue.Create(queuePath, transactional);
}
else
{
Console.WriteLine(queuePath + " already exists.");
}
}
// Provides an event handler for the PeekCompleted event.
private static void MyPeekCompleted(IAsyncResult asyncResult)
{
// Connect to the queue.
MessageQueue queue = new MessageQueue(".\\exampleQueue");
// End the asynchronous peek operation.
Message msg = queue.EndPeek(asyncResult);
// Display the message information on the screen.
Console.WriteLine("Message number: {0}", (int)asyncResult.AsyncState);
Console.WriteLine("Message body: {0}", (string)msg.Body);
// Receive the message. This will remove the message from the queue.
msg = queue.Receive(TimeSpan.FromSeconds(10.0));
}
}示例2: Main
//引入命名空間
using System;
using System.Messaging;
namespace MyProject
{
/// <summary>
/// Provides a container class for the example.
/// </summary>
public class MyNewQueue
{
// Represents a state object associated with each message.
static int messageNumber = 0;
//**************************************************
// Provides an entry point into the application.
//
// This example performs asynchronous peek operation
// processing.
//**************************************************
public static void Main()
{
// Create an instance of MessageQueue. Set its formatter.
MessageQueue myQueue = new MessageQueue(".\\myQueue");
myQueue.Formatter = new XmlMessageFormatter(new Type[]
{typeof(String)});
// Add an event handler for the PeekCompleted event.
myQueue.PeekCompleted += new
PeekCompletedEventHandler(MyPeekCompleted);
// Begin the asynchronous peek operation with a time-out
// of one minute.
myQueue.BeginPeek(new TimeSpan(0,1,0), messageNumber++);
// Do other work on the current thread.
return;
}
//**************************************************
// Provides an event handler for the PeekCompleted
// event.
//**************************************************
private static void MyPeekCompleted(Object source,
PeekCompletedEventArgs asyncResult)
{
try
{
// Connect to the queue.
MessageQueue mq = (MessageQueue)source;
// End the asynchronous peek operation.
Message m = mq.EndPeek(asyncResult.AsyncResult);
// Display message information on the screen,
// including the message number (state object).
Console.WriteLine("Message: " +
(int)asyncResult.AsyncResult.AsyncState + " "
+(string)m.Body);
// Restart the asynchronous peek operation, with the
// same time-out.
mq.BeginPeek(new TimeSpan(0,1,0), messageNumber++);
}
catch(MessageQueueException e)
{
if (e.MessageQueueErrorCode ==
MessageQueueErrorCode.IOTimeout)
{
Console.WriteLine(e.ToString());
}
// Handle other sources of MessageQueueException.
}
// Handle other exceptions.
return;
}
}
}示例3: Main
//引入命名空間
using System;
using System.Messaging;
namespace MyProject
{
/// <summary>
/// Provides a container class for the example.
/// </summary>
public class MyNewQueue
{
//**************************************************
// Provides an entry point into the application.
//
// This example performs asynchronous peek operation
// processing.
//**************************************************
public static void Main()
{
// Create an instance of MessageQueue. Set its formatter.
MessageQueue myQueue = new MessageQueue(".\\myQueue");
myQueue.Formatter = new XmlMessageFormatter(new Type[]
{typeof(String)});
// Add an event handler for the PeekCompleted event.
myQueue.PeekCompleted += new
PeekCompletedEventHandler(MyPeekCompleted);
// Begin the asynchronous peek operation.
myQueue.BeginPeek();
// Do other work on the current thread.
return;
}
//**************************************************
// Provides an event handler for the PeekCompleted
// event.
//**************************************************
private static void MyPeekCompleted(Object source,
PeekCompletedEventArgs asyncResult)
{
// Connect to the queue.
MessageQueue mq = (MessageQueue)source;
// End the asynchronous peek operation.
Message m = mq.EndPeek(asyncResult.AsyncResult);
// Display message information on the screen.
Console.WriteLine("Message: " + (string)m.Body);
// Restart the asynchronous peek operation.
mq.BeginPeek();
return;
}
}
}示例4: Main
//引入命名空間
using System;
using System.Messaging;
namespace MyProject
{
/// <summary>
/// Provides a container class for the example.
/// </summary>
public class MyNewQueue
{
//**************************************************
// Provides an entry point into the application.
//
// This example performs asynchronous peek operation
// processing.
//**************************************************
public static void Main()
{
// Create an instance of MessageQueue. Set its formatter.
MessageQueue myQueue = new MessageQueue(".\\myQueue");
myQueue.Formatter = new XmlMessageFormatter(new Type[]
{typeof(String)});
// Add an event handler for the PeekCompleted event.
myQueue.PeekCompleted += new
PeekCompletedEventHandler(MyPeekCompleted);
// Begin the asynchronous peek operation with a time-out
// of one minute.
myQueue.BeginPeek(new TimeSpan(0,1,0));
// Do other work on the current thread.
return;
}
//**************************************************
// Provides an event handler for the PeekCompleted
// event.
//**************************************************
private static void MyPeekCompleted(Object source,
PeekCompletedEventArgs asyncResult)
{
try
{
// Connect to the queue.
MessageQueue mq = (MessageQueue)source;
// End the asynchronous peek operation.
Message m = mq.EndPeek(asyncResult.AsyncResult);
// Display message information on the screen.
Console.WriteLine("Message: " + (string)m.Body);
// Restart the asynchronous peek operation, with the
// same time-out.
mq.BeginPeek(new TimeSpan(0,1,0));
}
catch(MessageQueueException e)
{
if (e.MessageQueueErrorCode ==
MessageQueueErrorCode.IOTimeout)
{
Console.WriteLine(e.ToString());
}
// Handle other sources of MessageQueueException.
}
// Handle other exceptions.
return;
}
}
}