How to fix Exception while executing Azure function to write into Azure Table Storage

Question

I'm currently trying to create a simple Function with C# writing into Azure Table Storage.

Using the learn.Microsoft-Documentation "Connect Azure Functions to Azure Storage using Visual Studio Code" I already built a Function writing in Azure Queue Storage without any problems.

But when using the Documentation "Azure Tables output bindings for Azure Functions" ([https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-storage-table-output?tabs=isolated-process%2Cstorage-extension&pivots=programming-language-csharp) I get the Error System.Private.CoreLib: Exception while executing function: Functions.TableFunction. Microsoft.Azure.WebJobs.Extensions.Tables: '' is not a valid value for a partition key or row key.

I'm using the exact isolated process code from the article except the Trigger Method, which I changed to HTTP Trigger.

Thank you for your help !

Answer 1

@Annika Biere

Thanks for reaching out to Q&A forum.

This issue could occur if the Azure function extension bundle is not added to the host.json file. Please add the appropriate version of the extension bundle.

{
    "version": "2.0",
    "extensionBundle": {
        "id": "Microsoft.Azure.Functions.ExtensionBundle",
        "version": "[3.3.0, 4.0.0)"
    }
}

Reference : [https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-register#extension-bundles

Hope this helps! Feel free to reach out to me if you have any queries or concerns.