How to get nested object from local.settings.json to isolated C# function code?

Question

local.settings.json

{
    "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet-isolated"
  },
    "Functions": {
      "Client1": {
        "QueueName": "devqueue"
      }
    }
}

Function Code: (.NET 7 Isolated )

 public void Run([QueueTrigger("%Functions:Client1:QueueName%", Connection = "AzureWebJobsStorage")] string myQueueItem)
{
}

Error: The 'QueueTrigger' function is in error: Microsoft.Azure.WebJobs.Host: Error indexing method 'Functions.QueueTrigger'. Microsoft.Azure.WebJobs.Host: '%Functions:Client1:QueueName%' does not resolve to a value.

Answer 1

vaishu-143 Thanks for posting your question in Microsoft Q&A. Unfortunately, this is not supported, and you need to use Values to define your settings as described in this thread. Notes, Values must be string and not JSON objects or arrays and refer doc: Local settings file. Also, refer Azure Queue storage trigger doc for more details on the usage of QueueTrigger.

Currently, the binding expressions are resolved by the host, and a feature request #1253 was open to support configuration sources registered with the worker based on discussion #1238. I suggest you follow the item on the updates or feel free to submit a new issue in repo azure-functions-dotnet-worker.

I hope this helps with your question and let me know if you have any other.

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