Windows azure blob set properties - azure

Question

I'm geting an error 'The remote server returned an error: (404) Not Found.
CloudBlockBlob blockBlob = container.GetBlockBlobReference("test.csv");
blockBlob.Properties.ContentType = "text/csv; charset=utf-8";
blockBlob.SetProperties();
The error is being thrown at SetProperties.
I have seen a few codes where they do not call SetProperties(). Does the contenttype get saved to the blob in such cases?
I did some search and found some people suggesting to check on fiddler.
The following is happening on fiddler..
/xxxevents?restype=container Result 404
/xxxevents?restype=container Result 201 Created ( Container.CreateIfNotExists called)
Now it throws an error while creating the blob.. Request and response headers provided..
404 HTTPS xxx.blob.core.windows.net /xxxevents/test.csv?comp=properties 215 application/xml waworkerhost:5500
PUT https://xxx.blob.core.windows.net/xxxevents/test.csv?comp=properties HTTP/1.1
User-Agent: WA-Storage/4.3.0 (.NET CLR 4.0.30319.18444; Win32NT 6.1.7601.65536)
x-ms-version: 2014-02-14
x-ms-blob-content-type: text/csv; charset=utf-8
x-ms-client-request-id: 2424933c-1bd7-49fd-998e-11d5499da03b
x-ms-date: Sun, 28 Sep 2014 07:16:04 GMT
Authorization: SharedKey xxx:tQ6DeUSVSq0TIaRjnVQoOgqNJIlHU5k1uay4loMeU04=
Host: xxx.blob.core.windows.net
Content-Length: 0
HTTP/1.1 404 The specified blob does not exist.
Content-Length: 215
Content-Type: application/xml
Server: Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0
x-ms-request-id: 7845cafa-0001-0033-7d19-af2c68000000
x-ms-version: 2014-02-14
Date: Sun, 28 Sep 2014 07:15:53 GMT
Would sincerely appreciate any help
Thanks

Answer 1

This is expected behavior. SetBlobProperties() method can only be called on blobs which are there in your blob storage. What you would need to do is upload blob first.
Assuming you're trying to upload test.csv file from say C:\temp folder, here's what you would need to do:
CloudBlockBlob blockBlob = container.GetBlockBlobReference("test.csv");
blockBlob.Properties.ContentType = "text/csv; charset=utf-8";
blockBlob.UploadFromFile(#"C:\temp\test.csv", FileMode.Open);