Azure function not working “Cannot declare namespace in script code”

Question

I am a java microservices person - not much into .NET.

With the help from StackOverflow community .. I was able to get a working code for my problem.

The code is w

Answer 1

If you want to use c# as script, you must remove the namespace (as the error describes) and also add a Run method:

//PS: review which package will you use
#r "Microsoft.WindowsAzure.Storage"
#r "Azure.Storage.Blobs"
#r "Microsoft.Azure.Storage.Blob"

using Azure.Storage.Blobs;
using Azure.Storage.Blobs.Models;
using Microsoft.Azure.Storage.Blob;
using Microsoft.Extensions.Logging;
using Microsoft.WindowsAzure.Storage;
using System;

public static void Run(CloudQueueMessage myQueueItem, ILogger log)
{
    log.LogInformation($"C# Queue trigger function processed: {myQueueItem.AsString}");
    await CopyBlob();
}

static async Task CopyBlob()
        {
            BlobServiceClient blobServiceClient = new BlobServiceClient(storageconnstring);

            BlobContainerClient containerClient = blobServiceClient.GetBlobContainerClient(containerName);

            BlobClient blobClient = containerClient.GetBlobClient(filename);
            var blobUri = blobClient.Uri;

            BlobContainerClient targetContainerClient = blobServiceClient.GetBlobContainerClient("demo-copy");//This is the container where we want to copy the blob
            BlobClient targetBlobClient = targetContainerClient.GetBlobClient(filename);
            await targetBlobClient.StartCopyFromUriAsync(blobUri);
        }

if you want to keep with your local development experience, you'd better use Azure Functions template in your visual studio. More info:

https://docs.microsoft.com/en-us/azure/azure-functions/functions-develop-vs

https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-csharp

https://docs.microsoft.com/en-us/azure/azure-functions/functions-dotnet-class-library