Failure to connect to Azure Service bus queue

Question

Am trying to listen to an azure service bus queue but am getting an exception when initializing the connection to to the queue. I have tried to search for a way out but with less success. Note that am using .NETCore 2.1. This is how am initializing the connection it:

// Initialize the connection to Service Bus Queue
_queueClient = QueueClient.CreateFromConnectionString(_interswitchQueueConnectionString, _interswitchQueueName, ReceiveMode.ReceiveAndDelete);

And this the exception am getting:

System.TypeInitializationException: The type initializer for 'Microsoft.ServiceBus.Messaging.Constants' threw an exception. ---> System.TypeLoadException: Could not load type 'System.UriTemplate' from assembly 'System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. at Microsoft.ServiceBus.Messaging.Constants..cctor() --- End of inner exception stack trace --- at Microsoft.ServiceBus.ServiceBusConnectionStringBuilder..ctor() at Microsoft.ServiceBus.Messaging.QueueClient.CreateFromConnectionString(String connectionString, String path, ReceiveMode mode)

The same initialization works fine when using .net framework. How can I do it in .NetCore ? Please Help Thanks in advance

score 5 · Accepted Answer · answered Oct 05 '18 at 15:22

5

With .NET Core you should use the new .NET Standard Azure Service Bus client, Microsoft.Azure.ServiceBus. The old client WindowsAzure.ServiceBus is a legacy client, only works with Full Framework, and is not recommended moving forward.

The new client does not have a concept of factory. You're in charge of creating entity clients (QueueClient, SubscriptionClient, and TopicClient) and managing connections.

answered Oct 05 '18 at 15:22

Sean Feldman

23,443
7
55
80

How can you make `CloudConfigurationManager.GetSetting` work when using `Microsoft.Azure.ServiceBus` / .NET Core? I can't seem to find a straight answer anywhere. – Panzercrisis Jul 03 '20 at 04:04
`CloudConfigurationManager` is a legacy configuration API. You should look into alternatives. Also, not entirely sure how this is related to the answer – Sean Feldman Jul 03 '20 at 17:10
Oh, yeah, I guess I was tired earlier and kind of threw the two in the same category. – Panzercrisis Jul 04 '20 at 13:32

score 2 · Answer 2 · answered Oct 05 '18 at 06:44

2

On Dotnet Core 2.1 you can try this.

var queueClient = new QueueClient(connectionString, entityPath, ReceiveMode.ReceiveAndDelete);

Hope this helps.

answered Oct 05 '18 at 06:44

Mohammed Kamran Azam

269
2
16

Thanks Muhammed, I figured out that I had to use the IQueueClient to get this done, I had to use Microsoft.Azure.ServiceBus – Nagwere Stanley Barnabas Oct 06 '18 at 07:59

Yuvaranjani · Answer 3 · 2018-10-05T09:27:25.983

0

You can also do using MessagingFactory

MessagingFactory factory = MessagingFactory.CreateFromConnectionString(connectionString);

            queueClient = await factory.CreateMessageReceiverAsync(_entityPath, ReceiveMode.ReceiveAndDelete);

edited Oct 05 '18 at 09:27

answered Oct 05 '18 at 09:19

Yuvaranjani

300
2
12

1

This requires WindowsAzure.ServiceBus, and as @Sean Feldman said, it only works with Full Framework. I get a FileNotFoundException when trying to use MessagingFactory in Dotnet Core 2.1 – Met-u Feb 26 '20 at 06:03

Failure to connect to Azure Service bus queue

3 Answers3