CODEWITHSUNDEEP
c#azureazure-storage
mshwf
mshwf

Reputation: 7449

Get a reference of Azure blob by the full Uri not the blob name?

I 'm saving the uri of the file in the database in this form:

https://app.blob.core.windows.net/container/Accounts/Images/acc.jpg

But to delete it I need to pass only the blob name, when I try this

CloudBlockBlob blockBlob = Container.GetBlockBlobReference(uri);

The blob's full uri becomes:

https://app.blob.core.windows.net/container/https://app.blob.core.windows.net/container/Accounts/Images/acc.jpg

So I get 404 error (not found), I can do some trimming to the uri but that doesn't seem efficient. so is there a way to delete a blob/ get reference by its full URI?

Upvotes: 10

Views: 24418

Answers (4)

Dan Cook
Dan Cook

Reputation: 2072

You can now use the BlobUriBuilder class to safely get the blob name from the URI without the need for string parsing or other methods.

BlobUriBuilder blobUriBuilder = new BlobUriBuilder(new Uri(blobUri));
var sourceBlob = container.GetBlobClient(blobUriBuilder.BlobName);

Upvotes: 7

Saâd Haffar
Saâd Haffar

Reputation: 143

Your problem is that you're putting the URI string inside the blob name with this function GetBlockBlobReference as defined: public virtual CloudBlockBlob GetBlockBlobReference(string blobName);. You will use moondaisy solution's.

Upvotes: -2

Amit Bhandari
Amit Bhandari

Reputation: 223

I did face similar issue , since i already had valid container reference this worked for me :

CloudBlockBlob blockblob = container.GetBlockBlobReference(new CloudBlockBlob(blobUri).Name);

Upvotes: 18

moondaisy
moondaisy

Reputation: 4481

It is possible to do this creating the CloudBlockBlob with this constructor:

public CloudBlockBlob(Uri blobAbsoluteUri)

In your case, assuming uri is of type Uri and not just a string:

CloudBlockBlob blob = new CloudBlockBlob(uri);

You might need to use your credentials if the blob isn't public or the uri doesn't contain SAS credentials (like to one you included). In that case you will need this constructor:

public CloudBlockBlob(Uri blobAbsoluteUri, StorageCredentials credentials)

As stated by Zhaoxing Lu - Microsoft on the comments,

Public access is read only access, you need to specify the storage account key or Shared Access Signature for deleting operation.

Upvotes: 9

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