/// <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 }
// <snippet_CreateShare> //------------------------------------------------- // Create a file share //------------------------------------------------- public async Task CreateShareAsync(string shareName) { // <snippet_CreateShareClient> // 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); // </snippet_CreateShareClient> // 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"); } }
private async Task <string> ReadFileFromFileShare(ShareFileClient fileClient, string fileName) { var download = await fileClient.DownloadAsync(); using StreamReader reader = new StreamReader(download.Value.Content); var result = await reader.ReadToEndAsync(); return(result); }
/// <summary>Returns a stream so you can download a file</summary> /// <param name="directoryName">The directory of interest or empty/null if you want the root directory</param> /// <param name="fileName">The file name without a path</param> public async Task <Stream> DownloadAsync(string directoryName, string fileName) { ShareFileClient file = CreateClient(directoryName, fileName); //// Download the file ShareFileDownloadInfo download = await file.DownloadAsync(); return(download.Content); }
public async Task <String> GetFileContentAsync(String nombre) { ShareFileClient archivo = this.root.GetFileClient(nombre); var data = await archivo.DownloadAsync(); Stream stream = data.Value.Content; StreamReader reader = new StreamReader(stream); return(await reader.ReadToEndAsync()); }
/// <summary> /// Downloads a file from the Azure Shares files storage by calling <see cref="ShareFileClient.DownloadAsync(HttpRange, bool, CancellationToken)"/>. /// </summary> /// <param name="cancellationToken">The token used to signal cancellation request.</param> public override async Task RunAsync(CancellationToken cancellationToken) { Models.ShareFileDownloadInfo fileDownloadInfo = await _fileClient.DownloadAsync(cancellationToken : cancellationToken); // Copy the stream so it is actually downloaded. We use a local memory stream as destination to avoid the cost of copying to a file on disk. await fileDownloadInfo.Content.CopyToAsync(Stream.Null, (int)_stream.Length, cancellationToken : cancellationToken); #if DEBUG Console.WriteLine($"Downloaded file from {_fileClient.Path}. Content length: {fileDownloadInfo.ContentLength}"); #endif }
public static async Task <string> GetFile(string account, string key, string share, string file, string folder = null) { ShareFileClient fileClient = GetShareFileClient(account, key, share, file, folder); string tmpPath = Path.GetTempFileName(); ShareFileDownloadInfo download = await fileClient.DownloadAsync(); using (FileStream stream = System.IO.File.OpenWrite(tmpPath)) { download.Content.CopyTo(stream); } return(tmpPath); }
public async Task <MemoryStream> DownloadAsync(ConnectorConfig config, string fullFileName) { var dirName = Path.GetDirectoryName(fullFileName).ToString(); var fileName = Path.GetFileName(fullFileName).ToString(); ShareClient share = new ShareClient(config.connectionString, config.shareName); ShareDirectoryClient directory = share.GetDirectoryClient(dirName); ShareFileClient file = directory.GetFileClient(fileName); ShareFileDownloadInfo download = await file.DownloadAsync(); var stream = new MemoryStream(); await download.Content.CopyToAsync(stream); return(stream); }
public async Task <String> GetFileContentAsync(String filename) { ShareDirectoryClient raiz = this.cliente.GetRootDirectoryClient(); ShareFileClient file = raiz.GetFileClient(filename); String content = ""; var data = await file.DownloadAsync(); Stream stream = data.Value.Content; StreamReader reader = new StreamReader(stream); content = await reader.ReadToEndAsync(); return(content); }
/// <summary> /// Downloads the asynchronous. /// </summary> /// <param name="fileName">Name of the file.</param> /// <returns></returns> /// <exception cref="System.ArgumentNullException">fileName</exception> /// <exception cref="CloudFileSystem.Core.V1.FileManagement.Storage.StorageException"> /// shareExists - DownloadAsync or rootDirectoryExists - DownloadAsync or fileExists - /// DownloadAsync or downloadResponse - DownloadAsync /// </exception> public async Task <StorageFile> DownloadAsync(string fileName) { if (string.IsNullOrWhiteSpace(fileName)) { throw new ArgumentNullException(nameof(fileName)); } bool shareExists = await this._shareClient.ExistsAsync(); if (!shareExists) { throw new StorageException(nameof(shareExists), nameof(this.DownloadAsync)); } ShareDirectoryClient rootDirectory = this._shareClient.GetRootDirectoryClient(); bool rootDirectoryExists = await rootDirectory.ExistsAsync(); if (!rootDirectoryExists) { throw new StorageException(nameof(rootDirectoryExists), nameof(this.DownloadAsync)); } string safeName = this.RemoveInvalidCharacters(fileName); ShareFileClient file = rootDirectory.GetFileClient(safeName); bool fileExists = await file.ExistsAsync(); if (!fileExists) { throw new StorageException(nameof(fileExists), nameof(this.DownloadAsync)); } var downloadResponse = await file.DownloadAsync(); if (downloadResponse is null || downloadResponse.Value is null) { throw new StorageException(nameof(downloadResponse), nameof(this.DownloadAsync)); } return(new StorageFile(downloadResponse.Value.Content, downloadResponse.Value.ContentType, fileName, safeName)); }
/// <summary> /// Test some of the file storage operations. /// </summary> public async Task RunFileStorageOperationsAsync() { // These are used in the finally block to clean up the objects created during the demo. ShareClient shareClient = null; ShareFileClient shareFileClient = null; ShareDirectoryClient fileDirectory = null; BlobClient targetBlob = null; BlobContainerClient blobContainer = null; string destFile = null; string downloadFolder = null; // Name to be used for the file when downloading it so you can inspect it locally string downloadFile = null; try { //***** Setup *****// Console.WriteLine("Getting reference to the storage account."); // How to create a storage connection string - http://msdn.microsoft.com/en-us/library/azure/ee758697.aspx string storageConnectionString = ConfigurationManager.AppSettings.Get("StorageConnectionString"); string storageAccountName = ConfigurationManager.AppSettings.Get("StorageAccountName"); string storageAccountKey = ConfigurationManager.AppSettings.Get("StorageAccountKey"); Console.WriteLine("Instantiating file client."); // Create a share client for interacting with the file service. var shareServiceClient = new ShareServiceClient(storageConnectionString); // Create the share name -- use a guid in the name so it's unique. // This will also be used as the container name for blob storage when copying the file to blob storage. string shareName = "demotest-" + System.Guid.NewGuid().ToString(); // Name of folder to put the files in string sourceFolder = "testfolder"; // Name of file to upload and download string testFile = "HelloWorld.png"; // Folder where the HelloWorld.png file resides string localFolder = @".\"; // It won't let you download in the same folder as the exe file, // so use a temporary folder with the same name as the share. downloadFolder = Path.Combine(Path.GetTempPath(), shareName); //***** Create a file share *****// // Create the share if it doesn't already exist. Console.WriteLine("Creating share with name {0}", shareName); shareClient = shareServiceClient.GetShareClient(shareName); try { await shareClient.CreateIfNotExistsAsync(); Console.WriteLine(" Share created successfully."); } catch (RequestFailedException exRequest) { Common.WriteException(exRequest); Console.WriteLine("Please make sure your storage account has storage file endpoint enabled and specified correctly in the app.config - then restart the sample."); Console.WriteLine("Press any key to exit"); Console.ReadLine(); throw; } catch (Exception ex) { Console.WriteLine(" Exception thrown creating share."); Common.WriteException(ex); throw; } //***** Create a directory on the file share *****// // Create a directory on the share. Console.WriteLine("Creating directory named {0}", sourceFolder); ShareDirectoryClient rootDirectory = shareClient.GetRootDirectoryClient(); // If the source folder is null, then use the root folder. // If the source folder is specified, then get a reference to it. if (string.IsNullOrWhiteSpace(sourceFolder)) { // There is no folder specified, so return a reference to the root directory. fileDirectory = rootDirectory; Console.WriteLine(" Using root directory."); } else { // There was a folder specified, so return a reference to that folder. fileDirectory = rootDirectory.GetSubdirectoryClient(sourceFolder); await fileDirectory.CreateIfNotExistsAsync(); Console.WriteLine(" Directory created successfully."); } //***** Upload a file to the file share *****// // Get a file client. shareFileClient = fileDirectory.GetFileClient(testFile); // Upload a file to the share. Console.WriteLine("Uploading file {0} to share", testFile); // Set up the name and path of the local file. string sourceFile = Path.Combine(localFolder, testFile); if (File.Exists(sourceFile)) { using (FileStream stream = File.OpenRead(sourceFile)) { // Upload from the local file to the file share in azure. await shareFileClient.CreateAsync(stream.Length); await shareFileClient.UploadAsync(stream); } Console.WriteLine(" Successfully uploaded file to share."); } else { Console.WriteLine("File not found, so not uploaded."); } //***** Get list of all files/directories on the file share*****// // List all files/directories under the root directory. Console.WriteLine("Getting list of all files/directories under the root directory of the share."); var fileList = rootDirectory.GetFilesAndDirectoriesAsync(); // Print all files/directories listed above. await foreach (ShareFileItem listItem in fileList) { // listItem type will be ShareClient or ShareDirectoryClient. Console.WriteLine(" - {0} (type: {1})", listItem.Name, listItem.GetType()); } Console.WriteLine("Getting list of all files/directories in the file directory on the share."); // Now get the list of all files/directories in your directory. // Ordinarily, you'd write something recursive to do this for all directories and subdirectories. fileList = fileDirectory.GetFilesAndDirectoriesAsync(); // Print all files/directories in the folder. await foreach (ShareFileItem listItem in fileList) { // listItem type will be a file or directory Console.WriteLine(" - {0} (IsDirectory: {1})", listItem.Name, listItem.IsDirectory); } //***** Download a file from the file share *****// // Download the file to the downloadFolder in the temp directory. // Check and if the directory doesn't exist (which it shouldn't), create it. Console.WriteLine("Downloading file from share to local temp folder {0}.", downloadFolder); if (!Directory.Exists(downloadFolder)) { Directory.CreateDirectory(downloadFolder); } // Download the file. ShareFileDownloadInfo download = await shareFileClient.DownloadAsync(); downloadFile = Path.Combine(downloadFolder, testFile); using (FileStream stream = File.OpenWrite(downloadFile)) { await download.Content.CopyToAsync(stream); } Console.WriteLine(" Successfully downloaded file from share to local temp folder."); //***** Copy a file from the file share to blob storage, then abort the copy *****// // Copies can sometimes complete before there's a chance to abort. // If that happens with the file you're testing with, try copying the file // to a storage account in a different region. If it still finishes too fast, // try using a bigger file and copying it to a different region. That will almost always // take long enough to give you time to abort the copy. // If you want to change the file you're testing the Copy with without changing the value for the // rest of the sample code, upload the file to the share, then assign the name of the file // to the testFile variable right here before calling GetFileClient. // Then it will use the new file for the copy and abort but the rest of the code // will still use the original file. ShareFileClient shareFileCopy = fileDirectory.GetFileClient(testFile); // Upload a file to the share. Console.WriteLine("Uploading file {0} to share", testFile); // Set up the name and path of the local file. string sourceFileCopy = Path.Combine(localFolder, testFile); using (FileStream stream = File.OpenRead(sourceFile)) { // Upload from the local file to the file share in azure. await shareFileCopy.CreateAsync(stream.Length); await shareFileCopy.UploadAsync(stream); } Console.WriteLine(" Successfully uploaded file to share."); // Copy the file to blob storage. Console.WriteLine("Copying file to blob storage. Container name = {0}", shareName); // First get a blob service client. var blobServiceClient = new BlobServiceClient(storageConnectionString); // Get a blob container client and create it if it doesn't already exist. blobContainer = blobServiceClient.GetBlobContainerClient(shareName); await blobContainer.CreateIfNotExistsAsync(); // Get a blob client to the target blob. targetBlob = blobContainer.GetBlobClient(testFile); string copyId = string.Empty; // Get a share file client to be copied. shareFileClient = fileDirectory.GetFileClient(testFile); // 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 authenticate access to the source object, even if you are copying within the same // storage account. var sas = new AccountSasBuilder { // Allow access to Files Services = AccountSasServices.Files, // Allow access to the service level APIs ResourceTypes = AccountSasResourceTypes.All, // Access expires in 1 day! ExpiresOn = DateTime.UtcNow.AddDays(1) }; sas.SetPermissions(AccountSasPermissions.Read); var credential = new StorageSharedKeyCredential(storageAccountName, storageAccountKey); // Build a SAS URI var sasUri = new UriBuilder(shareFileClient.Uri) { Query = sas.ToSasQueryParameters(credential).ToString() }; // Start the copy of the file to the blob. CopyFromUriOperation operation = await targetBlob.StartCopyFromUriAsync(sasUri.Uri); copyId = operation.Id; Console.WriteLine(" File copy started successfully. copyID = {0}", copyId); // Now clean up after yourself. Console.WriteLine("Deleting the files from the file share."); // Delete the files because cloudFile is a different file in the range sample. shareFileClient = fileDirectory.GetFileClient(testFile); await shareFileClient.DeleteIfExistsAsync(); Console.WriteLine("Setting up files to test WriteRange and ListRanges."); //***** Write 2 ranges to a file, then list the ranges *****// // This is the code for trying out writing data to a range in a file, // and then listing those ranges. // Get a reference to a file and write a range of data to it . // Then write another range to it. // Then list the ranges. // Start at the very beginning of the file. long startOffset = 0; // Set the destination file name -- this is the file on the file share that you're writing to. destFile = "rangeops.txt"; shareFileClient = fileDirectory.GetFileClient(destFile); // Create a string with 512 a's in it. This will be used to write the range. int testStreamLen = 512; string textToStream = string.Empty; textToStream = textToStream.PadRight(testStreamLen, 'a'); using (MemoryStream ms = new MemoryStream(Encoding.Default.GetBytes(textToStream))) { // Max size of the output file; have to specify this when you create the file // I picked this number arbitrarily. long maxFileSize = 65536; Console.WriteLine("Write first range."); // Set the stream back to the beginning, in case it's been read at all. ms.Position = 0; // If the file doesn't exist, create it. // The maximum file size is passed in. It has to be big enough to hold // all the data you're going to write, so don't set it to 256k and try to write two 256-k blocks to it. if (!shareFileClient.Exists()) { Console.WriteLine("File doesn't exist, create empty file to write ranges to."); // Create a file with a maximum file size of 64k. await shareFileClient.CreateAsync(maxFileSize); Console.WriteLine(" Empty file created successfully."); } // Write the stream to the file starting at startOffset for the length of the stream. Console.WriteLine("Writing range to file."); var range = new HttpRange(startOffset, textToStream.Length); await shareFileClient.UploadRangeAsync(range, ms); // Download the file to your temp directory so you can inspect it locally. downloadFile = Path.Combine(downloadFolder, "__testrange.txt"); Console.WriteLine("Downloading file to examine."); download = await shareFileClient.DownloadAsync(); using (FileStream stream = File.OpenWrite(downloadFile)) { await download.Content.CopyToAsync(stream); } Console.WriteLine(" Successfully downloaded file with ranges in it to examine."); } // Now add the second range, but don't make it adjacent to the first one, or it will show only // one range, with the two combined. Put it like 1000 spaces away. When you get the range back, it will // start at the position at the 512-multiple border prior or equal to the beginning of the data written, // and it will end at the 512-multliple border after the actual end of the data. //For example, if you write to 2000-3000, the range will be the 512-multiple prior to 2000, which is // position 1536, or offset 1535 (because it's 0-based). // And the right offset of the range will be the 512-multiple after 3000, which is position 3072, // or offset 3071 (because it's 0-based). Console.WriteLine("Getting ready to write second range to file."); startOffset += testStreamLen + 1000; //randomly selected number // Create a string with 512 b's in it. This will be used to write the range. textToStream = string.Empty; textToStream = textToStream.PadRight(testStreamLen, 'b'); using (MemoryStream ms = new MemoryStream(Encoding.Default.GetBytes(textToStream))) { ms.Position = 0; // Write the stream to the file starting at startOffset for the length of the stream. Console.WriteLine("Write second range to file."); var range = new HttpRange(startOffset, textToStream.Length); await shareFileClient.UploadRangeAsync(range, ms); Console.WriteLine(" Successful writing second range to file."); // Download the file to your temp directory so you can examine it. downloadFile = Path.Combine(downloadFolder, "__testrange2.txt"); Console.WriteLine("Downloading file with two ranges in it to examine."); download = await shareFileClient.DownloadAsync(); using (FileStream stream = File.OpenWrite(downloadFile)) { await download.Content.CopyToAsync(stream); } Console.WriteLine(" Successfully downloaded file to examine."); } // Query and view the list of ranges. Console.WriteLine("Call to get the list of ranges."); var listOfRanges = await shareFileClient.GetRangeListAsync(new HttpRange()); Console.WriteLine(" Successfully retrieved list of ranges."); foreach (HttpRange range in listOfRanges.Value.Ranges) { Console.WriteLine(" --> filerange startOffset = {0}, endOffset = {1}", range.Offset, range.Offset + range.Length); } //***** Clean up *****// } catch (Exception ex) { Console.WriteLine(" Exception thrown. Message = {0}{1} Strack Trace = {2}", ex.Message, Environment.NewLine, ex.StackTrace); } finally { //Clean up after you're done. Console.WriteLine("Removing all files, folders, shares, blobs, and containers created in this demo."); // ****NOTE: You can just delete the file share, and everything will be removed. // This samples deletes everything off of the file share first for the purpose of // showing you how to delete specific files and directories. // Delete the file with the ranges in it. destFile = "rangeops.txt"; shareFileClient = fileDirectory.GetFileClient(destFile); await shareFileClient.DeleteIfExistsAsync(); Console.WriteLine("Deleting the directory on the file share."); // Delete the directory. bool success = await fileDirectory.DeleteIfExistsAsync(); if (success) { Console.WriteLine(" Directory on the file share deleted successfully."); } else { Console.WriteLine(" Directory on the file share NOT deleted successfully; may not exist."); } Console.WriteLine("Deleting the file share."); // Delete the share. await shareClient.DeleteAsync(); Console.WriteLine(" Deleted the file share successfully."); Console.WriteLine("Deleting the temporary download directory and the file in it."); // Delete the download folder and its contents. Directory.Delete(downloadFolder, true); Console.WriteLine(" Successfully deleted the temporary download directory."); Console.WriteLine("Deleting the container and blob used in the Copy/Abort test."); await targetBlob.DeleteIfExistsAsync(); await blobContainer.DeleteIfExistsAsync(); Console.WriteLine(" Successfully deleted the blob and its container."); } }