Example #1
0
        public static void WriteFile(string fullPath, string output, Boolean append)
        {
            ShareFileClient file = new ShareFileClient(CONNECTIONSTRING, SHARENAME, fullPath);

            string original = "";

            if (!append && file.Exists())
            {
                file.Delete();
            }
            if (append)
            {
                if (file.Exists())
                {
                    ShareFileDownloadInfo download = file.Download();
                    original = GetStreamContents(download.Content) + "\n";
                }
            }

            using (Stream outStream = GenerateStreamFromString(original + output)) {
//                if (!file.Exists())
                file.Create(outStream.Length);
                file.UploadRange(new HttpRange(0, outStream.Length), outStream);
            }
        }
        public async Task <string> ReadFile(string fileShare, string fileName)
        {
            string      json  = "";
            ShareClient share = new ShareClient(connectionString, fileShare);

            if (!share.Exists())
            {
                Exception error = new Exception($"Fileshare {fileName} does not exist ");
                throw error;
            }
            ShareDirectoryClient directory = share.GetRootDirectoryClient();
            ShareFileClient      file      = directory.GetFileClient(fileName);

            if (file.Exists())
            {
                using (Stream fileStream = await file.OpenReadAsync())
                {
                    using (StreamReader reader = new StreamReader(fileStream))
                    {
                        json = reader.ReadToEnd();
                    }
                }
            }
            else
            {
                Exception error = new Exception($"File {fileName} does not exist in Azure storage ");
                throw error;
            }
            return(json);
        }
        public async Task <string> SaveFileUri(string fileShare, string fileName, string fileContent)
        {
            ShareClient share = new ShareClient(connectionString, fileShare);

            if (!share.Exists())
            {
                share.Create();
            }
            ShareDirectoryClient rootDir = share.GetRootDirectoryClient();
            ShareFileClient      file    = rootDir.GetFileClient(fileName);

            if (!file.Exists())
            {
                file.Create(fileContent.Length);
            }

            byte[] outBuff = Encoding.ASCII.GetBytes(fileContent);
            ShareFileOpenWriteOptions options = new ShareFileOpenWriteOptions {
                MaxSize = outBuff.Length
            };
            var stream = await file.OpenWriteAsync(true, 0, options);

            stream.Write(outBuff, 0, outBuff.Length);
            stream.Flush();
            return(file.Uri.ToString());
        }
        public IActionResult DownloadFile(string userId, string fileName)
        {
            // Get a reference to a share and then create it
            ShareClient share = new ShareClient(Secret.AzureConnectionString, Secret.AzureFileShareName);

            if (!share.Exists())
            {
                share.Create();
            }

            // Get a reference to a directory and create it
            ShareDirectoryClient directory = share.GetDirectoryClient(Auth0Utils.GetUserFolder());

            if (!directory.Exists())
            {
                directory.Create();
            }

            // Get a reference to a file and upload it
            ShareFileClient fileClient = directory.GetFileClient(fileName);

            if (fileClient.Exists())
            {
                //ShareFileDownloadInfo download = file.Download();
                return(File(fileClient.OpenRead(), "application/octet-stream"));
            }
            else
            {
                return(NotFound());
            }
        }
Example #5
0
        /// <summary>
        /// Tests if a file exists in the current directory
        /// </summary>
        /// <param name="filename">The name of the file to check</param>
        /// <returns>True if successful. False if not. Any exceptions are thrown.</returns>
        public bool FileExists(string filename)
        {
            if (FileShare == null || Directory == null)
            {
                throw new Exception("Cannot check to Azure file exists: " + filename + " (null share or directory).");
            }

            // Get a reference to the file
            ShareFileClient file = Directory.GetFileClient(filename);

            // Check whether it exists.
            return(file.Exists());
        }
Example #6
0
        public static string ReadFile(string azurePath)
        {
            string          text = "";
            ShareFileClient file = new ShareFileClient(CONNECTIONSTRING, SHARENAME, azurePath);

            if (!file.Exists())
            {
                return(null);
            }
            using (Stream stream = file.OpenRead()) {
                StreamReader reader = new StreamReader(stream);
                text = reader.ReadToEnd();
            }
            return(text);
        }
Example #7
0
        public static void CopyToAzureFileShare(string localPath, string azurePath)
        {
            ShareFileClient newFile = new ShareFileClient(CONNECTIONSTRING, SHARENAME, azurePath);

            if (newFile.Exists())
            {
                newFile.Delete();
            }
            using (FileStream stream = File.OpenRead(localPath)) {
                newFile.Create(stream.Length);
                if (stream.Length > 0)
                {
                    newFile.UploadRange(new HttpRange(0, stream.Length), stream);
                }
            }
        }
        public async Task DeleteFile(string fileShare, string fileName)
        {
            ShareClient share = new ShareClient(connectionString, fileShare);

            if (!share.Exists())
            {
                Exception error = new Exception($"Fileshare {fileShare} does not exist ");
                throw error;
            }
            ShareDirectoryClient rootDir = share.GetRootDirectoryClient();
            ShareFileClient      file    = rootDir.GetFileClient(fileName);

            if (file.Exists())
            {
                await file.DeleteAsync();
            }
            else
            {
                Exception error = new Exception($"File {fileName} does not exist in Azure storage ");
                throw error;
            }
        }
Example #9
0
        public override void ExecuteCmdlet()
        {
            if (AsJob.IsPresent)
            {
                DoBeginProcessing();
            }

            string   filePath  = this.Source;
            FileInfo localFile = new FileInfo(filePath);

            if (!localFile.Exists)
            {
                throw new FileNotFoundException(string.Format(CultureInfo.CurrentCulture, Resources.SourceFileNotFound, this.Source));
            }
            long fileSize = localFile.Length;

            // if FIPS policy is enabled, must use native MD5 for DMlib.
            if (fipsEnabled)
            {
                if (fileSize < sizeTB)
                {
                    CloudStorageAccount.UseV1MD5 = false;
                }
                else // use Track2 SDK
                {
                    WriteWarning("The uploaded file won't have Content MD5 hash, since caculate MD5 hash fail, most possiblly caused by FIPS is enabled on this machine.");
                }
            }

            bool isDirectory;

            string[] path = NamingUtil.ValidatePath(this.Path, out isDirectory);
            var      cloudFileToBeUploaded =
                BuildCloudFileInstanceFromPathAsync(localFile.Name, path, isDirectory).ConfigureAwait(false).GetAwaiter().GetResult();

            if (ShouldProcess(cloudFileToBeUploaded.Name, "Set file content"))
            {
                // Step 2: Build the CloudFile object which pointed to the
                // destination cloud file.
                this.RunTask(async taskId =>
                {
                    var progressRecord = new ProgressRecord(
                        this.OutputStream.GetProgressId(taskId),
                        string.Format(CultureInfo.CurrentCulture, Resources.SendAzureFileActivity, localFile.Name,
                                      cloudFileToBeUploaded.GetFullPath(), cloudFileToBeUploaded.Share.Name),
                        Resources.PrepareUploadingFile);

                    if (fileSize <= sizeTB)
                    {
                        await DataMovementTransferHelper.DoTransfer(() =>
                                                                    this.TransferManager.UploadAsync(
                                                                        localFile.FullName,
                                                                        cloudFileToBeUploaded,
                                                                        new UploadOptions
                        {
                            PreserveSMBAttributes = context is null ? false : context.PreserveSMBAttribute.IsPresent
                        },
                                                                        this.GetTransferContext(progressRecord, localFile.Length),
                                                                        this.CmdletCancellationToken),
                                                                    progressRecord,
                                                                    this.OutputStream).ConfigureAwait(false);
                    }
                    else // use Track2 SDK
                    {
                        //Create File
                        ShareFileClient fileClient = AzureStorageFile.GetTrack2FileClient(cloudFileToBeUploaded, Channel.StorageContext);

                        // confirm overwrite if file exist
                        if (!this.Force.IsPresent &&
                            fileClient.Exists(this.CmdletCancellationToken) &&
                            !await this.OutputStream.ConfirmAsync(string.Format(CultureInfo.CurrentCulture, Resources.OverwriteConfirmation, Util.ConvertToString(cloudFileToBeUploaded))))
                        {
                            return;
                        }

                        await fileClient.CreateAsync(fileSize, cancellationToken: this.CmdletCancellationToken).ConfigureAwait(false);

                        //Prepare progress Handler
                        IProgress <long> progressHandler = new Progress <long>((finishedBytes) =>
                        {
                            if (progressRecord != null)
                            {
                                // Size of the source file might be 0, when it is, directly treat the progress as 100 percent.
                                progressRecord.PercentComplete   = 0 == fileSize ? 100 : (int)(finishedBytes * 100 / fileSize);
                                progressRecord.StatusDescription = string.Format(CultureInfo.CurrentCulture, Resources.FileTransmitStatus, progressRecord.PercentComplete);
                                this.OutputStream.WriteProgress(progressRecord);
                            }
                        });

                        long blockSize = 4 * 1024 * 1024;
                        int maxWorkers = 4;

                        List <Task> runningTasks = new List <Task>();

                        IncrementalHash hash = null;
                        if (!fipsEnabled)
                        {
                            hash = IncrementalHash.CreateHash(HashAlgorithmName.MD5);
                        }

                        using (FileStream stream = File.OpenRead(localFile.FullName))
                        {
                            byte[] buffer      = null;
                            long lastBlockSize = 0;
                            for (long offset = 0; offset < fileSize; offset += blockSize)
                            {
                                long currentBlockSize = offset + blockSize < fileSize ? blockSize : fileSize - offset;

                                // Only need to create new buffer when chunk size change
                                if (currentBlockSize != lastBlockSize)
                                {
                                    buffer        = new byte[currentBlockSize];
                                    lastBlockSize = currentBlockSize;
                                }
                                await stream.ReadAsync(buffer: buffer, offset: 0, count: (int)currentBlockSize);
                                if (!fipsEnabled && hash != null)
                                {
                                    hash.AppendData(buffer);
                                }

                                Task task = UploadFileRangAsync(fileClient,
                                                                new HttpRange(offset, currentBlockSize),
                                                                new MemoryStream(buffer),
                                                                progressHandler);
                                runningTasks.Add(task);

                                // Check if any of upload range tasks are still busy
                                if (runningTasks.Count >= maxWorkers)
                                {
                                    await Task.WhenAny(runningTasks).ConfigureAwait(false);

                                    // Clear any completed blocks from the task list
                                    for (int i = 0; i < runningTasks.Count; i++)
                                    {
                                        Task runningTask = runningTasks[i];
                                        if (!runningTask.IsCompleted)
                                        {
                                            continue;
                                        }

                                        await runningTask.ConfigureAwait(false);
                                        runningTasks.RemoveAt(i);
                                        i--;
                                    }
                                }
                            }
                            // Wait for all upload range tasks finished
                            await Task.WhenAll(runningTasks).ConfigureAwait(false);
                        }

                        // Need set file properties
                        if ((!fipsEnabled && hash != null) || (context != null && context.PreserveSMBAttribute.IsPresent))
                        {
                            ShareFileHttpHeaders header = null;
                            if (!fipsEnabled && hash != null)
                            {
                                header             = new ShareFileHttpHeaders();
                                header.ContentHash = hash.GetHashAndReset();
                            }

                            FileSmbProperties smbProperties = null;
                            if (context != null && context.PreserveSMBAttribute.IsPresent)
                            {
                                FileInfo sourceFileInfo         = new FileInfo(localFile.FullName);
                                smbProperties                   = new FileSmbProperties();
                                smbProperties.FileCreatedOn     = sourceFileInfo.CreationTimeUtc;
                                smbProperties.FileLastWrittenOn = sourceFileInfo.LastWriteTimeUtc;
                                smbProperties.FileAttributes    = Util.LocalAttributesToAzureFileNtfsAttributes(File.GetAttributes(localFile.FullName));
                            }

                            // set file header and attributes to the file
                            fileClient.SetHttpHeaders(httpHeaders: header, smbProperties: smbProperties);
                        }

                        if (this.PassThru)
                        {
                            // fetch latest file properties for output
                            cloudFileToBeUploaded.FetchAttributes();
                        }
                    }

                    if (this.PassThru)
                    {
                        WriteCloudFileObject(taskId, this.Channel, cloudFileToBeUploaded);
                    }
                });
        /// <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.");
            }
        }