Read file from Blob using shared key in c#

In that case, if you want to display the private blob on the UI without using a SAS token, you can create a server-side endpoint that serves as a proxy to retrieve the blob content and return it to the client.

Thanks for the response Amit, but the requirement is we have stored the blob storage path into the DB, and returning that path from DB. Using that path we are showing image on UI.  

When we make a Private access, that path gives an error 404 on UI.

Yes, besides using a SAS (Shared Access Signature) token, there is another way to access private blobs in a web API using C#: by making use of the Azure Storage account key.

using Microsoft.Azure.Storage;
using Microsoft.Azure.Storage.Auth;
using Microsoft.Azure.Storage.Blob;

public static async Task ReadPrivateBlobAsync()
{
    // Set up the storage account and blob client
    string accountName = "your_storage_account_name";
    string accountKey = "your_storage_account_key";
    string containerName = "your_container_name";
    string blobName = "your_blob_name";

    StorageCredentials storageCredentials = new StorageCredentials(accountName, accountKey);
    CloudStorageAccount storageAccount = new CloudStorageAccount(storageCredentials, true);
    CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
    CloudBlobContainer container = blobClient.GetContainerReference(containerName);
    CloudBlockBlob blob = container.GetBlockBlobReference(blobName);

    // Read the blob content
    using (var memoryStream = new MemoryStream())
    {
        await blob.DownloadToStreamAsync(memoryStream);
        byte[] blobContent = memoryStream.ToArray();
        
        // Process the blob content as needed
    }
}