带重命名的 ASP.NET Core AzureBlob 下载文件

Question

I have the following code on my page:

<a class="btn-default btn" href="<AzureBlobContainerUrl>/<guid>.psd" download="@Model.FileName" target="_blank">Download 
    <span class="glyphicon glyphicon-export"></span>
</a>

@Model.FileName represents eg 'MyPhotoshopFile.psd'

First Problem: The downloaded file has the original GUID as filename not eg 'MyPhotoshopFile.psd'.

Second Problem: If the file is a eg PDF then Google opens the file directly in the current browser tab instead of downloading it.

Any solutions for that?

Answer 1

For the first problem, try setting the Content-Disposition property on the blob. If you're using the C# SDK, then grab the blob and you can set the CD using something like this:

blob.FetchAttributes();
blob.Properties.ContentDisposition = string.Format("attachment;filename=\"{0}\"", yourFileName);
blob.SetProperties();

Based on this older question ( Chrome Download Attribute not working ), the "download" attribute in Chrome behaves differently based on the CD, so setting this explicitly will likely solve your second problem.

Answer 2

Well, thank you very much for your tips! First, the code and your advice weren't working (the CD attribute was ignored by azure blos storage services), but after some hours of research I identified the issue:

• AccountKind StorageV2 (general purpose v2) is NOT working with the CD attribute
• AccountKind BlobStorage is working without any problems

I recreated the blob storage and used the legacy BlobStorage account type. With this the ContentDisposition Attribute is working.