如何从服务总线主题死信队列C＃中读取？

Question

下面的代码可以很好地读取服务总线队列死信，但是对于主题而言，即使更改路径后，它抛出异常路径也不正确。

string path= "QueueName";

MessagingFactory messageFactory = MessagingFactory.CreateFromConnectionString("ConnecitonString");

MessageReceiver deadletterReceiver = await         messageFactory.CreateMessageReceiverAsync(QueueClient.FormatDeadLetterPath(path), ReceiveMode.PeekLock);

MessageSender sender = await messageFactory.CreateMessageSenderAsync(path);

BrokeredMessage deadLetter = await deadletterReceiver.ReceiveAsync(TimeSpan.Zero);
if (deadLetter != null)
{

现在，我想对Service Bus Topic DeadLetter进行同样的操作，因此路径应为topicName/subscriptionName

 string path= "TopicName/SubscriptionName";

    MessagingFactory messageFactory = MessagingFactory.CreateFromConnectionString("ConnecitonString");

    MessageReceiver deadletterReceiver = await messageFactory.CreateMessageReceiverAsync(TopicClient.FormatDeadLetterPath(path), ReceiveMode.PeekLock);

    MessageSender sender = await messageFactory.CreateMessageSenderAsync(path);

    BrokeredMessage deadLetter = await deadletterReceiver.ReceiveAsync(TimeSpan.Zero);
    if (deadLetter != null)
    {

获取异常路径不正确...

Answer 1

主题没有死信队列，订阅则没有。 您需要使用什么SubscriptionClient.FormatDeadLetterPath（String，String）方法，传递主题和订阅名称。