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C# FileStream.Dispose的代码示例
通过代码示例来学习C# FileStream.Dispose方法
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FileStream.Dispose是C#的System.IO命名空间下中的一个方法, 小编为大家找了一些网络大拿们常见的代码示例，源码中的FileStream.Dispose() 已经帮大家高亮显示了，大家可以重点学习FileStream.Dispose() 方法的写法，从而快速掌握该方法的应用。
FileStream.Dispose的代码示例1 - TryWriteTempFile()
using System.IO; public virtual bool TryWriteTempFile( ITracer tracer, Stream source, string tempFilePath, out long fileLength, out Task flushTask, bool throwOnError = false) { fileLength = 0; flushTask = null; try { Stream fileStream = null; try { fileStream = this.fileSystem.OpenFileStream( tempFilePath, FileMode.OpenOrCreate, FileAccess.Write, FileShare.Read, callFlushFileBuffers: false); // Any flushing to disk will be done asynchronously StreamUtil.CopyToWithBuffer(source, fileStream); fileLength = fileStream.Length; if (this.Enlistment.FlushFileBuffersForPacks) { // Flush any data buffered in FileStream to the file system fileStream.Flush(); // FlushFileBuffers using FlushAsync // Do this last to ensure that the stream is not being accessed after it's been disposed flushTask = fileStream.FlushAsync().ContinueWith((result) => fileStream.Dispose()); } } finally { if (flushTask == null && fileStream != null) { fileStream.Dispose(); } } this.ValidateTempFile(tempFilePath, tempFilePath); } catch (Exception ex) { if (flushTask != null) { flushTask.Wait(); flushTask = null; } this.CleanupTempFile(this.Tracer, tempFilePath); if (tracer != null) { EventMetadata metadata = CreateEventMetadata(ex); metadata.Add("tempFilePath", tempFilePath); tracer.RelatedWarning(metadata, $"{nameof(this.TryWriteTempFile)}: Exception caught while writing temp file", Keywords.Telemetry); } if (throwOnError) { throw; } else { return false; } } return true; }
开发者ID:microsoft，项目名称:VFSForGit，代码行数:77，代码来源:GitObjects.cs
在TryWriteTempFile()方法中，FileStream的代码示例类中的Dispose的代码示例方法一共出现了2次， 见黄色背景高亮显示的地方，欢迎大家点赞
FileStream.Dispose的代码示例2 - YaraScanFile()
using System.IO; public static ListYaraScanFile(string fileName, bool verbose) { List beaconScanMatches = new List (); using (var ctx = new YaraContext()) { Rules rules = null; try { using (Compiler compiler = new Compiler()) { // Retrieve YARA rules from YaraRules static class and compile them for scanning foreach (string rule in YaraRules.meterpreterRules) { compiler.AddRuleString(rule); } compiler.AddRuleString(YaraRules.cobaltStrikeRule); rules = compiler.GetRules(); } // Scanner and ScanResults do not need to be disposed. var scanner = new Scanner(); List results = new List (); // If file size > 2GB, stream the file and use ScanMemory() on file chunks rather than reading the whole file via if (new FileInfo(fileName).Length < Int32.MaxValue) { results.AddRange(scanner.ScanFile(fileName, rules)); } else { using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read)) { // Parse the file in 200MB chunks int chunkSize = 1024 * 1024 * 200; byte[] chunk = new byte[chunkSize]; int bytesRead = 0; long bytesToRead = fileStream.Length; while (bytesToRead != 0) { int n = fileStream.Read(chunk, 0, chunkSize); if (n == 0) { break; } // Yara scan the file chunk and add any results to the list var scanResults = scanner.ScanMemory(chunk, rules); // Because the file is being scanned in chunks, match offsets are based on the start of the chunk. Need to add // previous bytes read to the current match offsets if (scanResults.Count > 0) { foreach (ScanResult result in scanResults) { if (result.MatchingRule.Identifier.Contains("CobaltStrike")) { foreach (string key in result.Matches.Keys) { result.Matches[key][0].Offset += (ulong)bytesRead; } results.Add(result); } } } bytesRead += n; bytesToRead -= n; // Shitty progress update if (verbose && bytesRead > 0 && bytesRead <= fileStream.Length) Console.Write($"\r\tScanned {bytesRead} bytes of {fileStream.Length} byte file..."); } } if (verbose) Console.WriteLine($"\r\tFinished scanning file: {fileName}\t\t\t"); } beaconScanMatches = ParseScanResults(results); } finally { // Rules and Compiler objects must be disposed. if (rules != null) rules.Dispose(); } return beaconScanMatches; } }
开发者ID:Apr4h，项目名称:CobaltStrikeScan，代码行数:98，代码来源:CobaltStrikeScan.cs
在YaraScanFile()方法中，FileStream的代码示例类中的Dispose的代码示例方法一共出现了1次， 见黄色背景高亮显示的地方，欢迎大家点赞
FileStream.Dispose的代码示例3 - ExecuteCoreAsync()
using System.IO; protected override TaskExecuteCoreAsync() { // Make sure there's only one server with the same identity at a time. var serverMutexName = MutexName.GetServerMutexName(Pipe.Value()); Mutex serverMutex = null; var holdsMutex = false; try { serverMutex = new Mutex(initiallyOwned: true, name: serverMutexName, createdNew: out holdsMutex); } catch (Exception ex) { // The Mutex constructor can throw in certain cases. One specific example is docker containers // where the /tmp directory is restricted. In those cases there is no reliable way to execute // the server and we need to fall back to the command line. // Example: https://github.com/dotnet/roslyn/issues/24124 Error.Write($"Server mutex creation failed. {ex.Message}"); return Task.FromResult(-1); } if (!holdsMutex) { // Another server is running, just exit. Error.Write("Another server already running..."); return Task.FromResult(1); } FileStream pidFileStream = null; try { try { // Write the process and pipe information to a file in a well-known location. pidFileStream = WritePidFile(); } catch (Exception ex) { // Something happened when trying to write to the pid file. Log and move on. ServerLogger.LogException(ex, "Failed to create PID file."); } TimeSpan? keepAlive = null; if (KeepAlive.HasValue() && int.TryParse(KeepAlive.Value(), out var result)) { // Keep alive times are specified in seconds keepAlive = TimeSpan.FromSeconds(result); } var host = ConnectionHost.Create(Pipe.Value()); var compilerHost = CompilerHost.Create(); ExecuteServerCore(host, compilerHost, Cancelled, eventBus: null, keepAlive: keepAlive); } finally { serverMutex.ReleaseMutex(); serverMutex.Dispose(); pidFileStream?.Close(); } return Task.FromResult(0); }
开发者ID:aspnet，项目名称:Razor，代码行数:67，代码来源:ServerCommand.cs
在ExecuteCoreAsync()方法中，FileStream的代码示例类中的Dispose的代码示例方法一共出现了1次， 见黄色背景高亮显示的地方，欢迎大家点赞
FileStream.Dispose的代码示例4 - OpenAsync()
using System.IO; public override IAsyncOperationOpenAsync(FileAccessMode accessMode) { return AsyncInfo.Run((cancellationToken) => SafetyExtensions.Wrap (async () => { bool rw = accessMode is FileAccessMode.ReadWrite; if (Path == containerPath) { if (backingFile is not null) { return await backingFile.OpenAsync(accessMode); } var file = NativeFileOperationsHelper.OpenFileForRead(containerPath, rw); return file.IsInvalid ? null : new FileStream(file, rw ? FileAccess.ReadWrite : FileAccess.Read).AsRandomAccessStream(); } if (!rw) { SevenZipExtractor zipFile = await OpenZipFileAsync(); if (zipFile is null || zipFile.ArchiveFileData is null) { return null; } //zipFile.IsStreamOwner = true; var entry = zipFile.ArchiveFileData.FirstOrDefault(x => System.IO.Path.Combine(containerPath, x.FileName) == Path); if (entry.FileName is not null) { var ms = new MemoryStream(); await zipFile.ExtractFileAsync(entry.Index, ms); ms.Position = 0; return new NonSeekableRandomAccessStreamForRead(ms, entry.Size) { DisposeCallback = () => zipFile.Dispose() }; } return null; } throw new NotSupportedException("Can't open zip file as RW"); }, ((IPasswordProtectedItem)this).RetryWithCredentialsAsync)); }
开发者ID:files-community，项目名称:Files，代码行数:45，代码来源:ZipStorageFile.cs
在OpenAsync()方法中，FileStream的代码示例类中的Dispose的代码示例方法一共出现了1次， 见黄色背景高亮显示的地方，欢迎大家点赞
FileStream.Dispose的代码示例5 - Output()
using System.IO; public override int Output(IEnumerablesource, BsonValue options) { var filename = GetOption(options, "filename")?.AsString ?? throw new LiteException(0, "Collection $file_json requires string as 'filename' or a document field 'filename'"); var overwritten = GetOption(options, "overwritten", false).AsBoolean; var encoding = GetOption(options, "encoding", "utf-8").AsString; var delimiter = GetOption(options, "delimiter", ",").AsString[0]; var header = GetOption(options, "header", true).AsBoolean; var index = 0; IList headerFields = null; FileStream fs = null; StreamWriter writer = null; try { foreach (var doc in source) { if (index++ == 0) { fs = new FileStream(filename, overwritten ? FileMode.OpenOrCreate : FileMode.CreateNew); writer = new StreamWriter(fs, Encoding.GetEncoding(encoding)); headerFields = doc.Keys.ToList(); // print file header if (header) { var idxHeader = 0; foreach (var elem in doc) { if (idxHeader++ > 0) writer.Write(delimiter); writer.Write(elem.Key); } writer.WriteLine(); } } else { writer.WriteLine(); } var idxValue = 0; foreach(var field in headerFields) { var value = doc[field]; if (idxValue++ > 0) writer.Write(delimiter); this.WriteValue(value, writer); } } if (index > 0) { writer.Flush(); } } finally { if (writer != null) writer.Dispose(); if (fs != null) fs.Dispose(); } return index; }
开发者ID:mbdavid，项目名称:LiteDB，代码行数:71，代码来源:SysFileCsv.cs
在Output()方法中，FileStream的代码示例类中的Dispose的代码示例方法一共出现了2次， 见黄色背景高亮显示的地方，欢迎大家点赞
FileStream.Dispose的代码示例6 - Output()
using System.IO; public override int Output(IEnumerablesource, BsonValue options) { var filename = GetOption(options, "filename")?.AsString ?? throw new LiteException(0, "Collection $file_json requires string as filename or a document field 'filename'"); var pretty = GetOption(options, "pretty", false).AsBoolean; var indent = GetOption(options, "indent", 4).AsInt32; var encoding = GetOption(options, "encoding", "utf-8").AsString; var overwritten = GetOption(options, "overwritten", false).AsBoolean; var index = 0; FileStream fs = null; StreamWriter writer = null; JsonWriter json = null; try { foreach (var doc in source) { if (index++ == 0) { fs = new FileStream(filename, overwritten ? FileMode.OpenOrCreate : FileMode.CreateNew); writer = new StreamWriter(fs, Encoding.GetEncoding(encoding)); json = new JsonWriter(writer) { Pretty = pretty, Indent = indent }; writer.WriteLine("["); } else { writer.WriteLine(","); } json.Serialize(doc); } if (index > 0) { writer.WriteLine(); writer.Write("]"); writer.Flush(); } } finally { if (writer != null) writer.Dispose(); if (fs != null) fs.Dispose(); } return index; }
开发者ID:mbdavid，项目名称:LiteDB，代码行数:54，代码来源:SysFileJson.cs
在Output()方法中，FileStream的代码示例类中的Dispose的代码示例方法一共出现了2次， 见黄色背景高亮显示的地方，欢迎大家点赞
FileStream.Dispose的代码示例7 - Seek()
using System.IO; public override long Seek(long offset, SeekOrigin origin) { var position = origin == SeekOrigin.Begin ? offset : origin == SeekOrigin.Current ? _stream.Position + offset : _stream.Position - offset; // when offset pass limit first time, change current _stream from MemoryStrem to FileStream with TempFilename() if (position > _maxMemoryUsage && this.InMemory) { // create new filename if not passed on ctor (must be unique _filename = _filename ?? Path.Combine(Path.GetTempPath(), "litedb_" + Guid.NewGuid() + ".db"); var file = new FileStream(_filename, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None, PAGE_SIZE, FileOptions.RandomAccess); // copy data from memory to disk _stream.Position = 0; _stream.CopyTo(file); // dispose MemoryStream _stream.Dispose(); // and replace with FileStream _stream = file; } return _stream.Seek(offset, origin); }
开发者ID:mbdavid，项目名称:LiteDB，代码行数:30，代码来源:TempStream.cs
在Seek()方法中，FileStream的代码示例类中的Dispose的代码示例方法一共出现了1次， 见黄色背景高亮显示的地方，欢迎大家点赞
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