CODEWITHSUNDEEP
c#azure-functionsazureservicebusazure-servicebus-topics
Alex Gordon
Alex Gordon

Reputation: 60751

how do we add properties to a message?

Is it possible to set message properties (I think they are called UserProperties) when doing a binding?

Within my function I'm doing an output binding to servicebus:

    [return: ServiceBus("%Detach:Done%", Connection = "Detach:ServiceBus", EntityType = EntityType.Topic)]

How do we set the message properties when we are binding to ServiceBus?

Upvotes: 1

Views: 2686

Answers (2)

Roman Kiss
Roman Kiss

Reputation: 8235

public static class Function7
{
    [FunctionName("Function7")]
    [return: ServiceBus("test2", 
        Connection = "AzureServiceBusConnectionString", EntityType = EntityType.Queue)] 
    public static async Task<Message> Run([ServiceBusTrigger("test", 
        Connection = "AzureServiceBusConnectionString")]string myQueueItem, ILogger log)
    {
        log.LogInformation(
            $"C# ServiceBus queue trigger function processed message: {myQueueItem}");

        var message = new Message(Encoding.UTF8.GetBytes("{}"));
        message.Label = "Hello";
        message.UserProperties.Add("abc", 123);
        return await Task.FromResult<Message>(message);
    }
}

Upvotes: 4

Joey Cai
Joey Cai

Reputation: 20067

In async functions, use the return value or IAsyncCollector instead of an out parameter. For 2.x, use Message instead of BrokeredMessage like IAsyncCollector<Message>.

Then you can set the MessageId property on the message. Refer to this thread.

var message = new Message() { MessageId = messageId};

Upvotes: 2

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