CloudBlockBlob.UploadFromByteArrayAsync returns, but no image has been created
azure, azure-blob-storage, c#
Solution
I had missed a step in the creation of the blobs tutorial I was following. We need to call the following when creating the container in the codebehind so that we have public access to the image uploaded.
container.SetPermissions(
new BlobContainerPermissions { PublicAccess = BlobContainerPublicAccessType.Blob });
Problem
I have a method to upload my image to Azure blob storage. I have my account already created, and a name and key placed in my app. The behavior I'm seeing is that `await UploadFromByteArrayAsync(...)` returns and my method returns a URL. However, when I navigate to my azure blob storage in Microsoft Azure Storage Explorer, I can see that no blob has been created. Obviously, navigating to the URL returned by the method returns 404 also. The method has successfully created my container, so there is a definite connection with appropriate perms to my storage account, I have checked the content of the byte array and it contains actual data. Does anyone know why my image is never uploaded? ``` public async Task<string> UploadImage(byte[] imageByteArr) { // Retrieve storage account from the connection string. CloudStorageAccount storageAccount = CloudStorageAccount.Parse("DefaultEndpointsProtocol=https;AccountName=redacted;AccountKey=redacted;EndpointSuffix=core.windows.net"); // Create the blob client. CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient(); // Retrieve a reference to a previously created container. CloudBlobContainer container = blobClient.GetContainerReference("user-images"); // Create the container if it doesn't already exist. await container.CreateIfNotExistsAsync().ConfigureAwait(false); var docId = Guid.NewGuid().ToString(); CloudBlockBlob blockBlob = container.GetBlockBlobReference(docId); await blockBlob.UploadFromByteArrayAsync(imageByteArr, 0, imageByteArr.Length); blockBlob.Properties.ContentType = "image/jpg"; await blockBlob.SetPropertiesAsync(); return blockBlob.Uri.ToString(); } ```