<t>Actually you don't have to call SetProperties method. In order to set content type while uploading the blob, just set the ContentType property before calling the upload method. So your code should be:<br/>
<br/>
// Save image<br/>
CloudBlockBlob blockBlob = container.GetBlockBlobReference("blah.jpg");<br/>
blockBlob.Properties.ContentType = "image/jpg";<br/>
blockBlob.UploadFromByteArray(byteArrayThumbnail, 0, byteArrayThumbnail.Length);<br/>
<br/>
```<br/>
<br/>
and that should do the trick.</t>
