Upload and download file to and from Storage account
dotnet add Microsoft.Azure.Storage.Blob
Object model
Azure Blob storage is optimized for storing massive amounts of unstructured data. Unstructured data is data that does not adhere to a particular data model or definition, such as text or binary data. Blob storage offers three types of resources:
- The storage account
- A container in the storage account
- A blob in the container
The following diagram shows the relationship between these resources.
Use the following .NET classes to interact with these resources:
- BlobServiceClient: The
BlobServiceClient
class allows you to manipulate Azure Storage resources and blob containers. - BlobContainerClient: The
BlobContainerClient
class allows you to manipulate Azure Storage containers and their blobs. - BlobClient: The
BlobClient
class allows you to manipulate Azure Storage blobs. - BlobDownloadInfo: The
BlobDownloadInfo
class represents the properties and content returned from downloading a blob.
Download blobs
Download the previously created blob by calling the DownloadAsync method. The example code adds a suffix of “DOWNLOADED” to the file name so that you can see both files in local file system.
if (CloudStorageAccount.TryParse(configs.StorageConnectionString, out var storageAccount))
{
var blobClient = storageAccount.CreateCloudBlobClient();
var container = blobClient.GetContainerReference(configs.StorageContainerName);
var blob = container.GetBlockBlobReference(configs.SqliteDbName);
await blob.DownloadToFileAsync($".\\{configs.SqliteDbName}", FileMode.Create);
}
Upload blobs
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