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Sample01b_HelloWorldAsync.cs
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Sample01b_HelloWorldAsync.cs
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Azure.Storage;
using Azure.Storage.Files.Shares;
using Azure.Storage.Files.Shares.Models;
using NUnit.Framework;
namespace Azure.Storage.Files.Shares.Samples
{
/// <summary>
/// Basic Azure File Storage samples
/// </summary>
public class Sample01b_HelloWorldAsync : SampleTest
{
/// <summary>
/// Create a share and upload a file.
/// </summary>
/// <param name="connectionString">
/// A connection string to your Azure Storage account.
/// </param>
/// <param name="shareName">
/// The name of the share to create and upload to.
/// </param>
/// <param name="localFilePath">
/// Path of the file to upload.
/// </param>
public static async Task UploadAsync(string connectionString, string shareName, string localFilePath)
{
// Get a connection string to our Azure Storage account. You can
// obtain your connection string from the Azure Portal (click
// Access Keys under Settings in the Portal Storage account blade)
// or using the Azure CLI with:
//
// az storage account show-connection-string --name <account_name> --resource-group <resource_group>
//
// And you can provide the connection string to your application
// using an environment variable.
// Name of the directory and file we'll create
string dirName = "sample-dir";
string fileName = "sample-file";
// Get a reference to a share and then create it
ShareClient share = new ShareClient(connectionString, shareName);
await share.CreateAsync();
// Get a reference to a directory and create it
ShareDirectoryClient directory = share.GetDirectoryClient(dirName);
await directory.CreateAsync();
// Get a reference to a file and upload it
ShareFileClient file = directory.GetFileClient(fileName);
using (FileStream stream = File.OpenRead(localFilePath))
{
await file.CreateAsync(stream.Length);
await file.UploadRangeAsync(
new HttpRange(0, stream.Length),
stream);
}
}
/// <summary>
/// Download a file.
/// </summary>
/// <param name="connectionString">
/// A connection string to your Azure Storage account.
/// </param>
/// <param name="shareName">
/// The name of the share to download from.
/// </param>
/// <param name="localFilePath">
/// Path to download the local file.
/// </param>
public static async Task DownloadAsync(string connectionString, string shareName, string localFilePath)
{
#region Snippet:Azure_Storage_Files_Shares_Samples_Sample01b_HelloWorldAsync_DownloadAsync
//@@ string connectionString = "<connection_string>";
// Name of the share, directory, and file we'll download from
//@@ string shareName = "sample-share";
string dirName = "sample-dir";
string fileName = "sample-file";
// Path to the save the downloaded file
//@@ string localFilePath = @"<path_to_local_file>";
// Get a reference to the file
ShareClient share = new ShareClient(connectionString, shareName);
ShareDirectoryClient directory = share.GetDirectoryClient(dirName);
ShareFileClient file = directory.GetFileClient(fileName);
// Download the file
ShareFileDownloadInfo download = await file.DownloadAsync();
using (FileStream stream = File.OpenWrite(localFilePath))
{
await download.Content.CopyToAsync(stream);
}
#endregion Snippet:Azure_Storage_Files_Shares_Samples_Sample01b_HelloWorldAsync_DownloadAsync
}
/// <summary>
/// Traverse the files and directories in a share.
/// </summary>
/// <param name="connectionString">
/// A connection string to your Azure Storage account.
/// </param>
/// <param name="shareName">
/// The name of the share to traverse.
/// </param>
public static async Task TraverseAsync(string connectionString, string shareName)
{
ShareClient share = new ShareClient(connectionString, shareName);
// Track the remaining directories to walk, starting from the root
var remaining = new Queue<ShareDirectoryClient>();
remaining.Enqueue(share.GetRootDirectoryClient());
while (remaining.Count > 0)
{
// Get all of the next directory's files and subdirectories
ShareDirectoryClient dir = remaining.Dequeue();
await foreach (ShareFileItem item in dir.GetFilesAndDirectoriesAsync())
{
// Print the name of the item
Console.WriteLine(item.Name);
// Keep walking down directories
if (item.IsDirectory)
{
remaining.Enqueue(dir.GetSubdirectoryClient(item.Name));
}
}
}
}
/// <summary>
/// Trigger a recoverable error.
/// </summary>
/// <param name="connectionString">
/// A connection string to your Azure Storage account.
/// </param>
/// <param name="shareName">
/// The name of an existing share
/// </param>
public static async Task ErrorsAsync(string connectionString, string shareName)
{
ShareClient share = new ShareClient(connectionString, shareName);
try
{
// Try to create the share again
await share.CreateAsync();
}
catch (RequestFailedException ex)
when (ex.ErrorCode == ShareErrorCode.ShareAlreadyExists)
{
// Ignore any errors if the share already exists
}
}
}
}