Vývoj pro Soubory Azure pomocí .NET

• Knihovna Azure Core pro .NET: Tento balíček je implementací kanálu klienta Azure.
• klientská knihovna Azure Storage objektů blob pro .net: tento balíček poskytuje programový přístup k prostředkům Blob v účtu úložiště.
• klientská knihovna pro soubory Azure Storage Files pro .net: tento balíček poskytuje programový přístup k prostředkům souborů ve vašem účtu úložiště.
• Systémová Configuration Manager knihovna pro .NET: Tento balíček poskytuje třídu, která ukládá a načítá hodnoty v konfiguračním souboru.

balíčky můžete získat pomocí NuGet. Postupujte takto:

1. v Průzkumník řešení klikněte pravým tlačítkem myši na projekt a vyberte možnost spravovat balíčky NuGet.

2. v NuGet Správce balíčků vyberte procházet. Pak vyhledejte a zvolte Azure. Core a pak vyberte nainstalovat.

   Tento krok nainstaluje balíček a jeho závislosti.

3. Vyhledejte a nainstalujte tyto balíčky:

   • Azure. Storage. Struktur
   • Azure. Storage. Soubory. sdílené složky
   • System.Configuration.ConfigurationManager

• Microsoft Azure Storage společnou knihovnu pro .net: tento balíček poskytuje programový přístup k běžným prostředkům v účtu úložiště.
• Microsoft Azure Storage knihovna objektů blob pro .net: tento balíček poskytuje programový přístup k prostředkům Blob v účtu úložiště.
• Microsoft Azure Storage knihovna souborů pro .net: tento balíček poskytuje programový přístup k prostředkům souborů ve vašem účtu úložiště.
• Microsoft Azure Configuration Manager library for .net: tento balíček poskytuje třídu pro analýzu připojovacího řetězce v konfiguračním souboru bez ohledu na to, kde je aplikace spuštěná.

balíčky můžete získat pomocí NuGet. Postupujte takto:

1. v Průzkumník řešení klikněte pravým tlačítkem myši na projekt a vyberte možnost spravovat balíčky NuGet.

2. v NuGet Správce balíčků vyberte procházet. Pak vyhledejte a zvolte Microsoft. Azure. Storage. A pak vyberte nainstalovat.

   Tento krok nainstaluje balíček a jeho závislosti.

3. Vyhledejte a nainstalujte tyto balíčky:

   • Microsoft. Azure. Storage. Obecný
   • Microsoft. Azure. Storage. Souborů
   • Microsoft.Azure.ConfigurationManager

Nahraďte myaccount názvem svého účtu úložiště a mykey klíčem účtu úložiště.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <appSettings>
    <add key="StorageConnectionString" 
      value="DefaultEndpointsProtocol=https;AccountName=myaccount;AccountKey=mykey;EndpointSuffix=core.windows.net" />
    <add key="StorageAccountName" value="myaccount" />
    <add key="StorageAccountKey" value="mykey" />
  </appSettings>
</configuration>

Nahraďte myaccount názvem svého účtu úložiště a StorageAccountKeyEndingIn== klíčem účtu úložiště.

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
  <appSettings>
    <add key="StorageConnectionString"
      value="DefaultEndpointsProtocol=https;AccountName=myaccount;AccountKey=StorageAccountKeyEndingIn==" />
  </appSettings>
</configuration>

using System;
using System.Configuration;
using System.IO;
using System.Threading.Tasks;
using Azure;
using Azure.Storage;
using Azure.Storage.Blobs;
using Azure.Storage.Files.Shares;
using Azure.Storage.Files.Shares.Models;
using Azure.Storage.Sas;

using Microsoft.Azure; // Namespace for Azure Configuration Manager
using Microsoft.Azure.Storage; // Namespace for Storage Client Library
using Microsoft.Azure.Storage.Blob; // Namespace for Azure Blobs
using Microsoft.Azure.Storage.File; // Namespace for Azure Files

Knihovna správce konfigurace Microsoft Azure pro .NET poskytuje třídu pro potřeby analýzy připojovacího řetězce z konfiguračního souboru. Třída CloudConfigurationManager analyzuje nastavení konfigurace. Analyzuje nastavení pro klientské aplikace, které běží na ploše, na mobilním zařízení, na virtuálním počítači Azure nebo v cloudové službě Azure.

Chcete-li odkazovat na CloudConfigurationManager balíček, přidejte následující using direktivy:

using Microsoft.Azure; //Namespace for CloudConfigurationManager
using Microsoft.Azure.Storage;

Tady je příklad, který ukazuje, jak z konfiguračního souboru získat připojovací řetězec:

// Parse the connection string and return a reference to the storage account.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
    CloudConfigurationManager.GetSetting("StorageConnectionString"));

Použití nástroje Azure Configuration Manager není povinné. Můžete také použít rozhraní API, například třídu ConfigurationManager.NET Framework.

Následující metoda vytvoří sdílenou složku, pokud ještě neexistuje. Metoda začíná vytvořením objektu ShareClient z připojovacího řetězce. Ukázka se pak pokusí stáhnout soubor, který jsme vytvořili dříve. Tuto metodu volejte z Main() .

//-------------------------------------------------
// Create a file share
//-------------------------------------------------
public async Task CreateShareAsync(string shareName)
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instantiate a ShareClient which will be used to create and manipulate the file share
    ShareClient share = new ShareClient(connectionString, shareName);

    // Create the share if it doesn't already exist
    await share.CreateIfNotExistsAsync();

    // Ensure that the share exists
    if (await share.ExistsAsync())
    {
        Console.WriteLine($"Share created: {share.Name}");

        // Get a reference to the sample directory
        ShareDirectoryClient directory = share.GetDirectoryClient("CustomLogs");

        // Create the directory if it doesn't already exist
        await directory.CreateIfNotExistsAsync();

        // Ensure that the directory exists
        if (await directory.ExistsAsync())
        {
            // Get a reference to a file object
            ShareFileClient file = directory.GetFileClient("Log1.txt");

            // Ensure that the file exists
            if (await file.ExistsAsync())
            {
                Console.WriteLine($"File exists: {file.Name}");

                // Download the file
                ShareFileDownloadInfo download = await file.DownloadAsync();

                // Save the data to a local file, overwrite if the file already exists
                using (FileStream stream = File.OpenWrite(@"downloadedLog1.txt"))
                {
                    await download.Content.CopyToAsync(stream);
                    await stream.FlushAsync();
                    stream.Close();

                    // Display where the file was saved
                    Console.WriteLine($"File downloaded: {stream.Name}");
                }
            }
        }
    }
    else
    {
        Console.WriteLine($"CreateShareAsync failed");
    }
}

Dále přidejte následující obsah do metody za výše uvedený kód, abyste Main() získali připojovací řetězec. Tento kód získá odkaz na soubor, který jsme vytvořili dříve, a zobrazí jeho obsah.

// Create a CloudFileClient object for credentialed access to Azure Files.
CloudFileClient fileClient = storageAccount.CreateCloudFileClient();

// Get a reference to the file share we created previously.
CloudFileShare share = fileClient.GetShareReference("logs");

// Ensure that the share exists.
if (share.Exists())
{
    // Get a reference to the root directory for the share.
    CloudFileDirectory rootDir = share.GetRootDirectoryReference();

    // Get a reference to the directory we created previously.
    CloudFileDirectory sampleDir = rootDir.GetDirectoryReference("CustomLogs");

    // Ensure that the directory exists.
    if (sampleDir.Exists())
    {
        // Get a reference to the file we created previously.
        CloudFile file = sampleDir.GetFileReference("Log1.txt");

        // Ensure that the file exists.
        if (file.Exists())
        {
            // Write the contents of the file to the console window.
            Console.WriteLine(file.DownloadTextAsync().Result);
        }
    }
}

Výstup zobrazíte spuštěním konzolové aplikace.

//-------------------------------------------------
// Set the maximum size of a share
//-------------------------------------------------
public async Task SetMaxShareSizeAsync(string shareName, int increaseSizeInGiB)
{
    const long ONE_GIBIBYTE = 10737420000; // Number of bytes in 1 gibibyte

    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instantiate a ShareClient which will be used to access the file share
    ShareClient share = new ShareClient(connectionString, shareName);

    // Create the share if it doesn't already exist
    await share.CreateIfNotExistsAsync();

    // Ensure that the share exists
    if (await share.ExistsAsync())
    {
        // Get and display current share quota
        ShareProperties properties = await share.GetPropertiesAsync();
        Console.WriteLine($"Current share quota: {properties.QuotaInGB} GiB");

        // Get and display current usage stats for the share
        ShareStatistics stats = await share.GetStatisticsAsync();
        Console.WriteLine($"Current share usage: {stats.ShareUsageInBytes} bytes");

        // Convert current usage from bytes into GiB
        int currentGiB = (int)(stats.ShareUsageInBytes / ONE_GIBIBYTE);

        // This line sets the quota to be the current 
        // usage of the share plus the increase amount
        await share.SetQuotaAsync(currentGiB + increaseSizeInGiB);

        // Get the new quota and display it
        properties = await share.GetPropertiesAsync();
        Console.WriteLine($"New share quota: {properties.QuotaInGB} GiB");
    }
}

// Parse the connection string for the storage account.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
    Microsoft.Azure.CloudConfigurationManager.GetSetting("StorageConnectionString"));

// Create a CloudFileClient object for credentialed access to Azure Files.
CloudFileClient fileClient = storageAccount.CreateCloudFileClient();

// Get a reference to the file share we created previously.
CloudFileShare share = fileClient.GetShareReference("logs");

// Ensure that the share exists.
if (share.Exists())
{
    // Check current usage stats for the share.
    // Note that the ShareStats object is part of the protocol layer for the File service.
    Microsoft.Azure.Storage.File.Protocol.ShareStats stats = share.GetStats();
    Console.WriteLine("Current share usage: {0} GiB", stats.Usage.ToString());

    // Specify the maximum size of the share, in GiB.
    // This line sets the quota to be 10 GiB greater than the current usage of the share.
    share.Properties.Quota = 10 + stats.Usage;
    share.SetProperties();

    // Now check the quota for the share. Call FetchAttributes() to populate the share's properties.
    share.FetchAttributes();
    Console.WriteLine("Current share quota: {0} GiB", share.Properties.Quota);
}

Následující příklad metody vrátí SAS pro soubor v zadané sdílené složky.

//-------------------------------------------------
// Create a SAS URI for a file
//-------------------------------------------------
public Uri GetFileSasUri(string shareName, string filePath, DateTime expiration, ShareFileSasPermissions permissions)
{
    // Get the account details from app settings
    string accountName = ConfigurationManager.AppSettings["StorageAccountName"];
    string accountKey = ConfigurationManager.AppSettings["StorageAccountKey"];

    ShareSasBuilder fileSAS = new ShareSasBuilder()
    {
        ShareName = shareName,
        FilePath = filePath,

        // Specify an Azure file resource
        Resource = "f",

        // Expires in 24 hours
        ExpiresOn = expiration
    };

    // Set the permissions for the SAS
    fileSAS.SetPermissions(permissions);

    // Create a SharedKeyCredential that we can use to sign the SAS token
    StorageSharedKeyCredential credential = new StorageSharedKeyCredential(accountName, accountKey);

    // Build a SAS URI
    UriBuilder fileSasUri = new UriBuilder($"https://{accountName}.file.core.windows.net/{fileSAS.ShareName}/{fileSAS.FilePath}");
    fileSasUri.Query = fileSAS.ToSasQueryParameters(credential).ToString();

    // Return the URI
    return fileSasUri.Uri;
}

Můžete také vytvořit uložené zásady přístupu ve sdílené složce pro správu sdílených přístupových podpisů. Doporučujeme vytvořit uložené zásady přístupu, protože vám umožní odvolat SAS, pokud dojde k jeho ohrožení. Následující příklad vytvoří uložené zásady přístupu ve sdílené složky. V příkladu se tato zásada používá k poskytnutí omezení pro SAS pro soubor ve sdíleném umístění.

// Parse the connection string for the storage account.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
    Microsoft.Azure.CloudConfigurationManager.GetSetting("StorageConnectionString"));

// Create a CloudFileClient object for credentialed access to Azure Files.
CloudFileClient fileClient = storageAccount.CreateCloudFileClient();

// Get a reference to the file share we created previously.
CloudFileShare share = fileClient.GetShareReference("logs");

// Ensure that the share exists.
if (share.Exists())
{
    string policyName = "sampleSharePolicy" + DateTime.UtcNow.Ticks;

    // Create a new stored access policy and define its constraints.
    SharedAccessFilePolicy sharedPolicy = new SharedAccessFilePolicy()
        {
            SharedAccessExpiryTime = DateTime.UtcNow.AddHours(24),
            Permissions = SharedAccessFilePermissions.Read | SharedAccessFilePermissions.Write
        };

    // Get existing permissions for the share.
    FileSharePermissions permissions = share.GetPermissions();

    // Add the stored access policy to the share's policies. Note that each policy must have a unique name.
    permissions.SharedAccessPolicies.Add(policyName, sharedPolicy);
    share.SetPermissions(permissions);

    // Generate a SAS for a file in the share and associate this access policy with it.
    CloudFileDirectory rootDir = share.GetRootDirectoryReference();
    CloudFileDirectory sampleDir = rootDir.GetDirectoryReference("CustomLogs");
    CloudFile file = sampleDir.GetFileReference("Log1.txt");
    string sasToken = file.GetSharedAccessSignature(null, policyName);
    Uri fileSasUri = new Uri(file.StorageUri.PrimaryUri.ToString() + sasToken);

    // Create a new CloudFile object from the SAS, and write some text to the file.
    CloudFile fileSas = new CloudFile(fileSasUri);
    fileSas.UploadText("This write operation is authorized via SAS.");
    Console.WriteLine(fileSas.DownloadText());
}

//-------------------------------------------------
// Copy file within a directory
//-------------------------------------------------
public async Task CopyFileAsync(string shareName, string sourceFilePath, string destFilePath)
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Get a reference to the file we created previously
    ShareFileClient sourceFile = new ShareFileClient(connectionString, shareName, sourceFilePath);

    // Ensure that the source file exists
    if (await sourceFile.ExistsAsync())
    {
        // Get a reference to the destination file
        ShareFileClient destFile = new ShareFileClient(connectionString, shareName, destFilePath);

        // Start the copy operation
        await destFile.StartCopyAsync(sourceFile.Uri);

        if (await destFile.ExistsAsync())
        {
            Console.WriteLine($"{sourceFile.Uri} copied to {destFile.Uri}");
        }
    }
}

// Parse the connection string for the storage account.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
    Microsoft.Azure.CloudConfigurationManager.GetSetting("StorageConnectionString"));

// Create a CloudFileClient object for credentialed access to Azure Files.
CloudFileClient fileClient = storageAccount.CreateCloudFileClient();

// Get a reference to the file share we created previously.
CloudFileShare share = fileClient.GetShareReference("logs");

// Ensure that the share exists.
if (share.Exists())
{
    // Get a reference to the root directory for the share.
    CloudFileDirectory rootDir = share.GetRootDirectoryReference();

    // Get a reference to the directory we created previously.
    CloudFileDirectory sampleDir = rootDir.GetDirectoryReference("CustomLogs");

    // Ensure that the directory exists.
    if (sampleDir.Exists())
    {
        // Get a reference to the file we created previously.
        CloudFile sourceFile = sampleDir.GetFileReference("Log1.txt");

        // Ensure that the source file exists.
        if (sourceFile.Exists())
        {
            // Get a reference to the destination file.
            CloudFile destFile = sampleDir.GetFileReference("Log1Copy.txt");

            // Start the copy operation.
            destFile.StartCopy(sourceFile);

            // Write the contents of the destination file to the console window.
            Console.WriteLine(destFile.DownloadText());
        }
    }
}

//-------------------------------------------------
// Copy a file from a share to a blob
//-------------------------------------------------
public async Task CopyFileToBlobAsync(string shareName, string sourceFilePath, string containerName, string blobName)
{
    // Get a file SAS from the method created ealier
    Uri fileSasUri = GetFileSasUri(shareName, sourceFilePath, DateTime.UtcNow.AddHours(24), ShareFileSasPermissions.Read);

    // Get a reference to the file we created previously
    ShareFileClient sourceFile = new ShareFileClient(fileSasUri);

    // Ensure that the source file exists
    if (await sourceFile.ExistsAsync())
    {
        // Get the connection string from app settings
        string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

        // Get a reference to the destination container
        BlobContainerClient container = new BlobContainerClient(connectionString, containerName);

        // Create the container if it doesn't already exist
        await container.CreateIfNotExistsAsync();

        BlobClient destBlob = container.GetBlobClient(blobName);

        await destBlob.StartCopyFromUriAsync(sourceFile.Uri);

        if (await destBlob.ExistsAsync())
        {
            Console.WriteLine($"File {sourceFile.Name} copied to blob {destBlob.Name}");
        }
    }
}

// Parse the connection string for the storage account.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
    Microsoft.Azure.CloudConfigurationManager.GetSetting("StorageConnectionString"));

// Create a CloudFileClient object for credentialed access to Azure Files.
CloudFileClient fileClient = storageAccount.CreateCloudFileClient();

// Create a new file share, if it does not already exist.
CloudFileShare share = fileClient.GetShareReference("sample-share");
share.CreateIfNotExists();

// Create a new file in the root directory.
CloudFile sourceFile = share.GetRootDirectoryReference().GetFileReference("sample-file.txt");
sourceFile.UploadText("A sample file in the root directory.");

// Get a reference to the blob to which the file will be copied.
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer container = blobClient.GetContainerReference("sample-container");
container.CreateIfNotExists();
CloudBlockBlob destBlob = container.GetBlockBlobReference("sample-blob.txt");

// Create a SAS for the file that's valid for 24 hours.
// Note that when you are copying a file to a blob, or a blob to a file, you must use a SAS
// to authorize access to the source object, even if you are copying within the same
// storage account.
string fileSas = sourceFile.GetSharedAccessSignature(new SharedAccessFilePolicy()
{
    // Only read permissions are required for the source file.
    Permissions = SharedAccessFilePermissions.Read,
    SharedAccessExpiryTime = DateTime.UtcNow.AddHours(24)
});

// Construct the URI to the source file, including the SAS token.
Uri fileSasUri = new Uri(sourceFile.StorageUri.PrimaryUri.ToString() + fileSas);

// Copy the file to the blob.
destBlob.StartCopy(fileSasUri);

// Write the contents of the file to the console window.
Console.WriteLine("Source file contents: {0}", sourceFile.DownloadText());
Console.WriteLine("Destination blob contents: {0}", destBlob.DownloadText());

//-------------------------------------------------
// Create a share snapshot
//-------------------------------------------------
public async Task CreateShareSnapshotAsync(string shareName)
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instatiate a ShareServiceClient
    ShareServiceClient shareServiceClient = new ShareServiceClient(connectionString);

    // Instantiate a ShareClient which will be used to access the file share
    ShareClient share = shareServiceClient.GetShareClient(shareName);

    // Ensure that the share exists
    if (await share.ExistsAsync())
    {
        // Create a snapshot
        ShareSnapshotInfo snapshotInfo = await share.CreateSnapshotAsync();
        Console.WriteLine($"Snapshot created: {snapshotInfo.Snapshot}");
    }
}

storageAccount = CloudStorageAccount.Parse(ConnectionString); 
fClient = storageAccount.CreateCloudFileClient(); 
string baseShareName = "myazurefileshare"; 
CloudFileShare myShare = fClient.GetShareReference(baseShareName); 
var snapshotShare = myShare.Snapshot();

//-------------------------------------------------
// List the snapshots on a share
//-------------------------------------------------
public void ListShareSnapshots()
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instatiate a ShareServiceClient
    ShareServiceClient shareServiceClient = new ShareServiceClient(connectionString);

    // Display each share and the snapshots on each share
    foreach (ShareItem item in shareServiceClient.GetShares(ShareTraits.All, ShareStates.Snapshots))
    {
        if (null != item.Snapshot)
        {
            Console.WriteLine($"Share: {item.Name}\tSnapshot: {item.Snapshot}");
        }
    }
}

var shares = fClient.ListShares(baseShareName, ShareListingDetails.All);

//-------------------------------------------------
// List the snapshots on a share
//-------------------------------------------------
public void ListSnapshotContents(string shareName, string snapshotTime)
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instatiate a ShareServiceClient
    ShareServiceClient shareService = new ShareServiceClient(connectionString);

    // Get a ShareClient
    ShareClient share = shareService.GetShareClient(shareName);

    Console.WriteLine($"Share: {share.Name}");

    // Get as ShareClient that points to a snapshot
    ShareClient snapshot = share.WithSnapshot(snapshotTime);

    // Get the root directory in the snapshot share
    ShareDirectoryClient rootDir = snapshot.GetRootDirectoryClient();

    // Recursively list the directory tree
    ListDirTree(rootDir);
}

//-------------------------------------------------
// Recursively list a directory tree
//-------------------------------------------------
public void ListDirTree(ShareDirectoryClient dir)
{
    // List the files and directories in the snapshot
    foreach (ShareFileItem item in dir.GetFilesAndDirectories())
    {
        if (item.IsDirectory)
        {
            Console.WriteLine($"Directory: {item.Name}");
            ShareDirectoryClient subDir = dir.GetSubdirectoryClient(item.Name);
            ListDirTree(subDir);
        }
        else
        {
            Console.WriteLine($"File: {dir.Name}\\{item.Name}");
        }
    }
}

CloudFileShare mySnapshot = fClient.GetShareReference(baseShareName, snapshotTime); 
var rootDirectory = mySnapshot.GetRootDirectoryReference(); 
var items = rootDirectory.ListFilesAndDirectories();

//-------------------------------------------------
// Restore file from snapshot
//-------------------------------------------------
public async Task RestoreFileFromSnapshot(string shareName, string directoryName, string fileName, string snapshotTime)
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instatiate a ShareServiceClient
    ShareServiceClient shareService = new ShareServiceClient(connectionString);

    // Get a ShareClient
    ShareClient share = shareService.GetShareClient(shareName);

    // Get as ShareClient that points to a snapshot
    ShareClient snapshot = share.WithSnapshot(snapshotTime);

    // Get a ShareDirectoryClient, then a ShareFileClient to the snapshot file
    ShareDirectoryClient snapshotDir = snapshot.GetDirectoryClient(directoryName);
    ShareFileClient snapshotFile = snapshotDir.GetFileClient(fileName);

    // Get a ShareDirectoryClient, then a ShareFileClient to the live file
    ShareDirectoryClient liveDir = share.GetDirectoryClient(directoryName);
    ShareFileClient liveFile = liveDir.GetFileClient(fileName);

    // Restore the file from the snapshot
    ShareFileCopyInfo copyInfo = await liveFile.StartCopyAsync(snapshotFile.Uri);

    // Display the status of the operation
    Console.WriteLine($"Restore status: {copyInfo.CopyStatus}");
}

CloudFileShare liveShare = fClient.GetShareReference(baseShareName);
var rootDirOfliveShare = liveShare.GetRootDirectoryReference();
var dirInliveShare = rootDirOfliveShare.GetDirectoryReference(dirName);
var fileInliveShare = dirInliveShare.GetFileReference(fileName);

CloudFileShare snapshot = fClient.GetShareReference(baseShareName, snapshotTime);
var rootDirOfSnapshot = snapshot.GetRootDirectoryReference();
var dirInSnapshot = rootDirOfSnapshot.GetDirectoryReference(dirName);
var fileInSnapshot = dir1InSnapshot.GetFileReference(fileName);

string sasContainerToken = string.Empty;
SharedAccessFilePolicy sasConstraints = new SharedAccessFilePolicy();
sasConstraints.SharedAccessExpiryTime = DateTime.UtcNow.AddHours(24);
sasConstraints.Permissions = SharedAccessFilePermissions.Read;

//Generate the shared access signature on the container, setting the constraints directly on the signature.
sasContainerToken = fileInSnapshot.GetSharedAccessSignature(sasConstraints);

string sourceUri = (fileInSnapshot.Uri.ToString() + sasContainerToken + "&" + fileInSnapshot.SnapshotTime.ToString()); ;
fileInliveShare.StartCopyAsync(new Uri(sourceUri));

//-------------------------------------------------
// Delete a snapshot
//-------------------------------------------------
public async Task DeleteSnapshotAsync(string shareName, string snapshotTime)
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instatiate a ShareServiceClient
    ShareServiceClient shareService = new ShareServiceClient(connectionString);

    // Get a ShareClient
    ShareClient share = shareService.GetShareClient(shareName);

    // Get a ShareClient that points to a snapshot
    ShareClient snapshotShare = share.WithSnapshot(snapshotTime);

    try
    {
        // Delete the snapshot
        await snapshotShare.DeleteIfExistsAsync();
    }
    catch (RequestFailedException ex)
    {
        Console.WriteLine($"Exception: {ex.Message}");
        Console.WriteLine($"Error code: {ex.Status}\t{ex.ErrorCode}");
    }
}

CloudFileShare mySnapshot = fClient.GetShareReference(baseShareName, snapshotTime); mySnapshot.Delete(null, null, null);

//-------------------------------------------------
// Use metrics
//-------------------------------------------------
public async Task UseMetricsAsync()
{
    // Get the connection string from app settings
    string connectionString = ConfigurationManager.AppSettings["StorageConnectionString"];

    // Instatiate a ShareServiceClient
    ShareServiceClient shareService = new ShareServiceClient(connectionString);

    // Set metrics properties for File service
    await shareService.SetPropertiesAsync(new ShareServiceProperties()
    {
        // Set hour metrics
        HourMetrics = new ShareMetrics()
        {
            Enabled = true,
            IncludeApis = true,
            Version = "1.0",

            RetentionPolicy = new ShareRetentionPolicy()
            {
                Enabled = true,
                Days = 14
            }
        },

        // Set minute metrics
        MinuteMetrics = new ShareMetrics()
        {
            Enabled = true,
            IncludeApis = true,
            Version = "1.0",

            RetentionPolicy = new ShareRetentionPolicy()
            {
                Enabled = true,
                Days = 7
            }
        }
    });

    // Read the metrics properties we just set
    ShareServiceProperties serviceProperties = await shareService.GetPropertiesAsync();

    // Display the properties
    Console.WriteLine();
    Console.WriteLine($"HourMetrics.InludeApis: {serviceProperties.HourMetrics.IncludeApis}");
    Console.WriteLine($"HourMetrics.RetentionPolicy.Days: {serviceProperties.HourMetrics.RetentionPolicy.Days}");
    Console.WriteLine($"HourMetrics.Version: {serviceProperties.HourMetrics.Version}");
    Console.WriteLine();
    Console.WriteLine($"MinuteMetrics.InludeApis: {serviceProperties.MinuteMetrics.IncludeApis}");
    Console.WriteLine($"MinuteMetrics.RetentionPolicy.Days: {serviceProperties.MinuteMetrics.RetentionPolicy.Days}");
    Console.WriteLine($"MinuteMetrics.Version: {serviceProperties.MinuteMetrics.Version}");
    Console.WriteLine();
}

Nejprve do souboru Program.cs přidejte následující direktivy společně s using direktivy, které jste přidali výše:

using Microsoft.Azure.Storage.File.Protocol;
using Microsoft.Azure.Storage.Shared.Protocol;

Přestože objekty blob Azure, tabulky Azure a fronty Azure používají sdílený typ v oboru názvů, Azure Files používá vlastní typ, typ v oboru ServiceProperties Microsoft.Azure.Storage.Shared.Protocol názvů FileServiceProperties Microsoft.Azure.Storage.File.Protocol . Následující kód ke kompilaci však musí odkazovat na oba obory názvů z kódu.

// Parse your storage connection string from your application's configuration file.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
        Microsoft.Azure.CloudConfigurationManager.GetSetting("StorageConnectionString"));
// Create the File service client.
CloudFileClient fileClient = storageAccount.CreateCloudFileClient();

// Set metrics properties for File service.
// Note that the File service currently uses its own service properties type,
// available in the Microsoft.Azure.Storage.File.Protocol namespace.
fileClient.SetServiceProperties(new FileServiceProperties()
{
    // Set hour metrics
    HourMetrics = new MetricsProperties()
    {
        MetricsLevel = MetricsLevel.ServiceAndApi,
        RetentionDays = 14,
        Version = "1.0"
    },
    // Set minute metrics
    MinuteMetrics = new MetricsProperties()
    {
        MetricsLevel = MetricsLevel.ServiceAndApi,
        RetentionDays = 7,
        Version = "1.0"
    }
});

// Read the metrics properties we just set.
FileServiceProperties serviceProperties = fileClient.GetServiceProperties();
Console.WriteLine("Hour metrics:");
Console.WriteLine(serviceProperties.HourMetrics.MetricsLevel);
Console.WriteLine(serviceProperties.HourMetrics.RetentionDays);
Console.WriteLine(serviceProperties.HourMetrics.Version);
Console.WriteLine();
Console.WriteLine("Minute metrics:");
Console.WriteLine(serviceProperties.MinuteMetrics.MetricsLevel);
Console.WriteLine(serviceProperties.MinuteMetrics.RetentionDays);
Console.WriteLine(serviceProperties.MinuteMetrics.Version);