functions-service-bus-account-attribute.md

author	ggailey777
ms.service	azure-functions
ms.topic	include
ms.date	01/04/2022
ms.author	glenga

You can also use the ServiceBusAccountAttribute to specify the Service Bus account to use. The constructor takes the name of an app setting that contains a Service Bus connection string. The attribute can be applied at the parameter, method, or class level. The following example shows class level and method level:

[ServiceBusAccount("ClassLevelServiceBusAppSetting")]
public static class AzureFunctions
{
    [ServiceBusAccount("MethodLevelServiceBusAppSetting")]
    [FunctionName("ServiceBusQueueTriggerCSharp")]
    public static void Run(
        [ServiceBusTrigger("myqueue", AccessRights.Manage)] 
        string myQueueItem, ILogger log)
{
    ...
}

The Service Bus account to use is determined in the following order:

• The ServiceBusTrigger attribute's Connection property.
• The ServiceBusAccount attribute applied to the same parameter as the ServiceBusTrigger attribute.
• The ServiceBusAccount attribute applied to the function.
• The ServiceBusAccount attribute applied to the class.
• The AzureWebJobsServiceBus app setting.