How to set content type of file uploaded to Azure blob container

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Posted on by CU03040925-0

with inspiration from this: http://axtechnicalblogger.blogspot.com/2019/11/upload-files-to-azure-blob-from-d365-fo.html

I can upload a stream to a azure blob container, but the 'file' in the container is of type 'application/octet-stream' when in fact it is a 'application/pdf'

Here is some more information:

I'm reading emails from a Office 365 mailbox, and if there is any attachments and the attachment is of type PDF ('application/pdf') I store the file in a Azure blob container for futher processing.

Storing is working, but the type is not correct

I have tries omething like this: https://stackoverflow.com/questions/10040403/set-content-type-of-media-files-stored-on-blob

But I am not 'allowed' to set the content type

Any hint on how to do this is D365/x++ is highly appreciated

Thanks

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Martin Dráb 239,040 Most Valuable Professional on at

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Can you please elaborate why you can't set the content type?

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CU03040925-0 18 on at

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Here is the code:

using Microsoft.WindowsAzure.Storage; using Microsoft.WindowsAzure.Storage.Blob; class SavefileToAzureBlobStorage { public static str saveFile(System.IO.Stream _streamToSave, str _saveName, str _azureStorageAccountName, str _azureStorageAccountKey, str _azureBlobContainerName) { str ret; Microsoft.WindowsAzure.Storage.Auth.StorageCredentials storageCredentials; CloudStorageAccount storageAccount; try { storageCredentials = new Microsoft.WindowsAzure.Storage.Auth.StorageCredentials(_azureStorageAccountName, _azureStorageAccountKey); if(storageCredentials) { storageAccount = new Microsoft.WindowsAzure.Storage.CloudStorageAccount(storageCredentials, true); if(storageAccount) { CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient(); CloudBlobContainer blobContainer = blobClient.GetContainerReference(_azureBlobContainerName); blobContainer.CreateIfNotExistsAsync(); CloudBlockBlob blockblob = blobContainer.GetBlockBlobReference(_savename); if(blockblob && !blockblob.Exists(null, null)) { blockblob.UploadFromStreamAsync(_streamToSave).Wait(); blockblob.FetchAttributes(null,null,null); //blockblob.Properties.ContentType = "application/pdf"; BlobProperties BlobProperties = blockblob.Properties; if(BlobProperties.Length == _streamToSave.Length) { ret = blockblob.Uri.AbsoluteUri; } } else { throw error(strFmt("File with name %1 already exists", _saveName)); } } else { throw error("Failed to get storeage account"); } } else { throw errorr("Faild to create storage credentials"); } } catch(Exception::Error) { throw Error(AifUtil::getClrErrorMessage()); } return ret; } }

If I uncomment the line where I set the content type I get a compilation error: Invalid token '='

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Martin Dráb 239,040 Most Valuable Professional on at

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Split it to two steps:

BlobProperties blobProperties = blockblob.Properties; blobProperties.ContentType = "application/pdf";

It seems that the compiler gets confused if you do it at once.

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CU03040925-0 18 on at

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yes... But the property is not set :)

I must be missing something else

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Martin Dráb 239,040 Most Valuable Professional on at

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I think it is set, but it's not used for anything. You should set it before uploading the data, shouldn't you?

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