public async Task PageBlobSample()
{
// Instantiate a new BlobServiceClient using a connection string.
BlobServiceClient blobServiceClient = new BlobServiceClient(TestConfigurations.DefaultTargetTenant.ConnectionString);
// Instantiate a new BlobContainerClient
BlobContainerClient blobContainerClient = blobServiceClient.GetBlobContainerClient($"mycontainer3-{Guid.NewGuid()}");
try
{
// Create new Container in the Service
await blobContainerClient.CreateAsync();
// Instantiate a new PageBlobClient
PageBlobClient pageBlobClient = blobContainerClient.GetPageBlobClient("pageblob");
// Create PageBlob in the Service
const int blobSize = 1024;
await pageBlobClient.CreateAsync(size : blobSize);
// Upload content to PageBlob
using (FileStream fileStream = File.OpenRead("Samples/SampleSource.txt"))
{
// Because the file size varies slightly across platforms
// and PageBlob pages need to be multiples of 512, we'll
// pad the file to our blobSize
using (MemoryStream pageStream = new MemoryStream(new byte[blobSize]))
{
await fileStream.CopyToAsync(pageStream);
pageStream.Seek(0, SeekOrigin.Begin);
await pageBlobClient.UploadPagesAsync(
content : pageStream,
offset : 0);
}
}
// Download PageBlob
using (FileStream fileStream = File.Create("PageDestination.txt"))
{
Response <BlobDownloadInfo> downloadResponse = await pageBlobClient.DownloadAsync();
await downloadResponse.Value.Content.CopyToAsync(fileStream);
}
// Delete PageBlob in the Service
await pageBlobClient.DeleteAsync();
}
finally
{
// Delete Container in the Service
await blobContainerClient.DeleteAsync();
}
}
/// <summary>
/// Basic operations to work with page blobs
/// </summary>
/// <returns>A Task object.</returns>
private static async Task BasicStoragePageBlobOperationsAsync()
{
const string PageBlobName = "samplepageblob";
string containerName = ContainerPrefix + Guid.NewGuid();
// Retrieve storage account information from connection string
BlobServiceClient blobServiceClient = Common.CreateblobServiceClientFromConnectionString();
// Create a container for organizing blobs within the storage account.
Console.WriteLine("1. Creating Container");
BlobContainerClient container = blobServiceClient.GetBlobContainerClient(containerName);
await container.CreateIfNotExistsAsync();
// Create a page blob in the newly created container.
Console.WriteLine("2. Creating Page Blob");
PageBlobClient pageBlob = container.GetPageBlobClient(PageBlobName);
await pageBlob.CreateAsync(512 * 2 /*size*/); // size needs to be multiple of 512 bytes
// Write to a page blob
Console.WriteLine("3. Write to a Page Blob");
byte[] samplePagedata = new byte[512];
Random random = new Random();
random.NextBytes(samplePagedata);
using (var stream = new MemoryStream(samplePagedata))
{
await pageBlob.UploadPagesAsync(stream, 0);
}
// List all blobs in this container. Because a container can contain a large number of blobs the results
// are returned in segments with a maximum of 5000 blobs per segment. You can define a smaller maximum segment size
// using the maxResults parameter on ListBlobsSegmentedAsync.
Console.WriteLine("4. List Blobs in Container");
var resultSegment = container.GetBlobsAsync();
await foreach (var blob in resultSegment)
{
// Blob type will be BlobClient, CloudPageBlob or BlobClientDirectory
Console.WriteLine("{0} (type: {1}", blob.Name, blob.GetType());
}
// Read from a page blob
Console.WriteLine("5. Read from a Page Blob");
var httpRange = new HttpRange(0, samplePagedata.Count());
var downloadInfo = await pageBlob.DownloadAsync(httpRange);
// Clean up after the demo
Console.WriteLine("6. Delete page Blob");
await pageBlob.DeleteIfExistsAsync();
Console.WriteLine("7. Delete Container");
await container.DeleteIfExistsAsync();
}
public async Task PageBlobSample()
{
// Instantiate a new BlobServiceClient using a connection string.
BlobServiceClient blobServiceClient = new BlobServiceClient(TestConfigurations.DefaultTargetTenant.ConnectionString);
// Instantiate a new BlobContainerClient
BlobContainerClient blobContainerClient = blobServiceClient.GetBlobContainerClient("mycontainer3");
try
{
// Create new Container in the Service
await blobContainerClient.CreateAsync();
// Instantiate a new PageBlobClient
PageBlobClient pageBlobClient = blobContainerClient.GetPageBlobClient("pageblob");
// Create PageBlob in the Service
await pageBlobClient.CreateAsync(size : 1024);
// Upload content to PageBlob
using (FileStream fileStream = File.OpenRead("Samples/SampleSource.txt"))
{
await pageBlobClient.UploadPagesAsync(
content : fileStream,
offset : 0);
}
// Download PageBlob
using (FileStream fileStream = File.Create("PageDestination.txt"))
{
Response <BlobDownloadInfo> downloadResponse = await pageBlobClient.DownloadAsync();
await downloadResponse.Value.Content.CopyToAsync(fileStream);
}
// Delete PageBlob in the Service
await pageBlobClient.DeleteAsync();
}
finally
{
// Delete Container in the Service
await blobContainerClient.DeleteAsync();
}
}
