C# FileInfo.Open的代码示例
FileInfo.Open方法的主要功能描述
通过代码示例来学习C# FileInfo.Open方法
通过代码示例来学习编程是非常高效的。
1. 代码示例提供了一个具体而直观的学习环境，使初学者能够立即看到编程概念和语法的实际应用。
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FileInfo.Open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FileInfo.Open() 已经帮大家高亮显示了，大家可以重点学习FileInfo.Open() 方法的写法，从而快速掌握该方法的应用。
FileInfo.Open的代码示例1 - ServiceLogContainsUpgradeMessaging()
using System.IO;
private bool ServiceLogContainsUpgradeMessaging()
{
// This test checks for the upgrade timer start message in the Service log
// file. GVFS.Service should schedule the timer as it starts.
string expectedTimerMessage = "Checking for product upgrades. (Start)";
string serviceLogFolder = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData),
"GVFS",
GVFSServiceProcess.TestServiceName,
"Logs");
DirectoryInfo logsDirectory = new DirectoryInfo(serviceLogFolder);
FileInfo logFile = logsDirectory.GetFiles()
.OrderByDescending(f => f.LastWriteTime)
.FirstOrDefault();
if (logFile != null)
{
using (StreamReader fileStream = new StreamReader(File.Open(logFile.FullName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)))
{
string nextLine = null;
while ((nextLine = fileStream.ReadLine()) != null)
{
if (nextLine.Contains(expectedTimerMessage))
{
return true;
}
}
}
}
return false;
}
开发者ID: microsoft, 项目名称: VFSForGit, 代码行数: 34, 代码来源: GVFSUpgradeReminderTests.cs
在microsoft提供的ServiceLogContainsUpgradeMessaging()方法中，该源代码示例一共有34行， 其中使用了FileInfo.Open()2次, 并且小编将这些方法高亮显示出来了，希望对您了解FileInfo.Open()有帮助。 如果您觉得有帮助的话，请帮忙点赞或转发。
该代码示例的点赞次数为3, 点赞数越大, 从某种程度说明这个示例对了解FileInfo.Open()可能更有帮助。
FileInfo.Open的代码示例2 - GitRequestsReplacementForTruncatedObject()
using System.IO;
[TestCase]
public void GitRequestsReplacementForTruncatedObject()
{
Action truncateObject = (string objectPath) =>
{
FileInfo objectFileInfo = new FileInfo(objectPath);
using (FileStream objectStream = new FileStream(objectPath, FileMode.Open))
{
objectStream.SetLength(objectFileInfo.Length - 8);
}
};
this.RunGitDiffWithCorruptObject(truncateObject);
// TODO 1114508: Update git cat-file to request object from GVFS when it finds a truncated object on disk.
////this.RunGitCatFileWithCorruptObject(truncateObject);
this.RunGitResetHardWithCorruptObject(truncateObject);
this.RunGitCheckoutOnFileWithCorruptObject(truncateObject);
}
开发者ID: microsoft, 项目名称: VFSForGit, 代码行数: 22, 代码来源: GitCorruptObjectTests.cs
在microsoft提供的GitRequestsReplacementForTruncatedObject()方法中，该源代码示例一共有22行， 其中使用了FileInfo.Open()1次, 并且小编将这些方法高亮显示出来了，希望对您了解FileInfo.Open()有帮助。 如果您觉得有帮助的话，请帮忙点赞或转发。
该代码示例的点赞次数为3, 点赞数越大, 从某种程度说明这个示例对了解FileInfo.Open()可能更有帮助。
FileInfo.Open的代码示例3 - TruncatedObjectRedownloaded()
using System.IO;
[TestCase, Order(17)]
public void TruncatedObjectRedownloaded()
{
GitProcess.InvokeProcess(this.Enlistment.RepoRoot, "checkout " + this.Enlistment.Commitish);
ProcessResult revParseResult = GitProcess.InvokeProcess(this.Enlistment.RepoRoot, "rev-parse :Test_EPF_WorkingDirectoryTests/TruncatedObjectRedownloaded.txt");
string sha = revParseResult.Output.Trim();
sha.Length.ShouldEqual(40);
string objectPath = Path.Combine(this.Enlistment.GetObjectRoot(this.fileSystem), sha.Substring(0, 2), sha.Substring(2, 38));
objectPath.ShouldNotExistOnDisk(this.fileSystem);
string corruptObjectFolderPath = Path.Combine(this.Enlistment.DotGVFSRoot, "CorruptObjects");
int initialCorruptObjectCount = 0;
if (this.fileSystem.DirectoryExists(corruptObjectFolderPath))
{
initialCorruptObjectCount = new DirectoryInfo(corruptObjectFolderPath).EnumerateFileSystemInfos().Count();
}
// Read a copy of TruncatedObjectRedownloaded.txt to force the object to be downloaded
GitProcess.InvokeProcess(this.Enlistment.RepoRoot, "rev-parse :Test_EPF_WorkingDirectoryTests/TruncatedObjectRedownloaded_copy.txt").Output.Trim().ShouldEqual(sha);
string testFileContents = this.Enlistment.GetVirtualPathTo("Test_EPF_WorkingDirectoryTests", "TruncatedObjectRedownloaded_copy.txt").ShouldBeAFile(this.fileSystem).WithContents();
objectPath.ShouldBeAFile(this.fileSystem);
string modifedFile = "Test_EPF_WorkingDirectoryTests/TruncatedObjectRedownloaded.txt";
GVFSHelpers.ModifiedPathsShouldNotContain(this.Enlistment, this.fileSystem, modifedFile);
// Truncate the contents of objectPath
string tempTruncatedObjectPath = objectPath + "truncated";
FileInfo objectFileInfo = new FileInfo(objectPath);
long objectLength = objectFileInfo.Length;
using (FileStream objectStream = new FileStream(objectPath, FileMode.Open))
using (FileStream truncatedObjectStream = new FileStream(tempTruncatedObjectPath, FileMode.CreateNew))
{
for (int i = 0; i < (objectStream.Length - 16); ++i)
{
truncatedObjectStream.WriteByte((byte)objectStream.ReadByte());
}
}
this.fileSystem.DeleteFile(objectPath);
this.fileSystem.MoveFile(tempTruncatedObjectPath, objectPath);
tempTruncatedObjectPath.ShouldNotExistOnDisk(this.fileSystem);
objectPath.ShouldBeAFile(this.fileSystem);
new FileInfo(objectPath).Length.ShouldEqual(objectLength - 16);
// Windows should correct a corrupt obect
// Read the original path and verify its contents are correct
this.Enlistment.GetVirtualPathTo("Test_EPF_WorkingDirectoryTests", "TruncatedObjectRedownloaded.txt").ShouldBeAFile(this.fileSystem).WithContents(testFileContents);
// Confirm there's a new item in the corrupt objects folder
corruptObjectFolderPath.ShouldBeADirectory(this.fileSystem).WithItems().Count().ShouldEqual(initialCorruptObjectCount + 1);
// File should not be in ModifiedPaths.dat
GVFSHelpers.ModifiedPathsShouldNotContain(this.Enlistment, this.fileSystem, "Test_EPF_WorkingDirectoryTests/TruncatedObjectRedownloaded.txt");
}
开发者ID: microsoft, 项目名称: VFSForGit, 代码行数: 55, 代码来源: WorkingDirectoryTests.cs
在microsoft提供的TruncatedObjectRedownloaded()方法中，该源代码示例一共有55行， 其中使用了FileInfo.Open()1次, 并且小编将这些方法高亮显示出来了，希望对您了解FileInfo.Open()有帮助。 如果您觉得有帮助的话，请帮忙点赞或转发。
该代码示例的点赞次数为3, 点赞数越大, 从某种程度说明这个示例对了解FileInfo.Open()可能更有帮助。
FileInfo.Open的代码示例4 - YaraScanFile()
using System.IO;
public static List YaraScanFile(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Apr4h提供的YaraScanFile()方法中，该源代码示例一共有98行， 其中使用了FileInfo.Open()1次, 并且小编将这些方法高亮显示出来了，希望对您了解FileInfo.Open()有帮助。 如果您觉得有帮助的话，请帮忙点赞或转发。
该代码示例的点赞次数为3, 点赞数越大, 从某种程度说明这个示例对了解FileInfo.Open()可能更有帮助。
FileInfo.Open的代码示例5 - GetBeaconsFromFile()
using System.IO;
///
/// Get Cobalt Strike Configurations from a file and output their contents to the console .
///
/// Name of memory/dump file to be scanned for Cobalt Strike beacons
private static void GetBeaconsFromFile(string fileName)
{
OutputMessageToConsole(LogLevel.Info, $"Scanning file: {fileName}");
List beacons = new List();
if (File.Exists(fileName))
{
// Check the size of the file. If > 500MB, and notify that scanning will take time
var fileSize = new FileInfo(fileName).Length;
if (fileSize > Int32.MaxValue)
{
OutputMessageToConsole(LogLevel.Warn, $"\tFile is large: {fileSize / (1024 * 1024)} MB. Scanning will be slow.");
}
// Yara scan the file and return any matches
List beaconMatches = CobaltStrikeScan.YaraScanFile(fileName, opts.Verbose);
// Extract config bytes at each match offset and parse the beacon config from them
if (beaconMatches.Count > 0)
{
if (opts.Verbose)
{
OutputMessageToConsole(LogLevel.Info, $"\t{beaconMatches.Count} Signature(s) detected in file. Attempting to extract and parse config...\n");
}
foreach (BeaconMatch match in beaconMatches)
{
try
{
byte[] beaconConfigBytes = new byte[4096];
// Get a byte array from the offset of the file with beacon matches to avoid cases
// where the file is too big to read in to a File object
using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
fileStream.Seek((long)match.Offset, SeekOrigin.Begin);
fileStream.Read(beaconConfigBytes, 0, 4096);
}
match.Offset = 0;
beacons.Add(new Beacon(beaconConfigBytes, match.Offset, match.Version));
}
catch (System.IO.IOException)
{
/*
if (opts.Verbose)
{
OutputMessageToConsole(LogLevel.Error, $"Error extracting signatured data from file at offset: {match.Offset}");
}
*/
}
}
if (beacons.Count > 0)
{
foreach (Beacon beacon in beacons)
{
if (beacon.isValidBeacon())
{
OutputMessageToConsole(LogLevel.Success, $"Cobalt Strike Beacon Configuration\n");
beacon.OutputToConsole();
}
}
}
else
OutputBeaconNotFoundMessage();
}
else { OutputBeaconNotFoundMessage(); }
}
else
{
OutputMessageToConsole(LogLevel.Error, $"File doesn't exist: {fileName}\nExiting...");
System.Environment.Exit(1);
}
}
开发者ID: Apr4h, 项目名称: CobaltStrikeScan, 代码行数: 78, 代码来源: ConsoleUI.cs
在Apr4h提供的GetBeaconsFromFile()方法中，该源代码示例一共有78行， 其中使用了FileInfo.Open()1次, 并且小编将这些方法高亮显示出来了，希望对您了解FileInfo.Open()有帮助。 如果您觉得有帮助的话，请帮忙点赞或转发。
该代码示例的点赞次数为3, 点赞数越大, 从某种程度说明这个示例对了解FileInfo.Open()可能更有帮助。
FileInfo.Open的代码示例6 - Send()
using System.IO;
///
/// Sends the specified file using the WebSocket connection.
///
///
///
/// A
///
/// The file is sent as the binary data.
///
///
///
/// The current state of the connection is not Open.
///
///
///
///
///
/// The file does not exist.
///
///
/// -or-
///
///
/// The file could not be opened.
///
///
public void Send(FileInfo fileInfo) {
if (_readyState != WebSocketState.Open) {
var msg = "The current state of the connection is not Open.";
throw new InvalidOperationException(msg);
}
if (fileInfo == null)
throw new ArgumentNullException("fileInfo");
if (!fileInfo.Exists) {
var msg = "The file does not exist.";
throw new ArgumentException(msg, "fileInfo");
}
FileStream stream;
if (!fileInfo.TryOpenRead(out stream)) {
var msg = "The file could not be opened.";
throw new ArgumentException(msg, "fileInfo");
}
send(Opcode.Binary, stream);
}
开发者ID: ntminer, 项目名称: NtMiner, 代码行数: 52, 代码来源: WebSocket.cs
在ntminer提供的Send()方法中，该源代码示例一共有52行， 其中使用了FileInfo.Open()1次, 并且小编将这些方法高亮显示出来了，希望对您了解FileInfo.Open()有帮助。 如果您觉得有帮助的话，请帮忙点赞或转发。
该代码示例的点赞次数为3, 点赞数越大, 从某种程度说明这个示例对了解FileInfo.Open()可能更有帮助。
FileInfo.Open()方法的常见问题及解答
C#中FileInfo.Open()的常见错误类型及注意事项
FileInfo.Open的错误类型有很多， 这里就不一一阐述了，本文只列出一些常见的代码示例供参考，大家可以看一下代码中Catch语句中是否有常见的错误捕获及处理。
C#中FileInfo.Open()的构造函数有哪些
FileInfo.Open构造函数功能基本类似，只是参数不同; 目前主流的集成开发环境都已经带智能提醒了，如:Visual Studio; 大家可以非常轻松的通过Visual Studio中的智能提醒，了解对应构造函数的用法。
如何使用ChartGPT写一段FileInfo.Open的代码
你可以在ChartGPT中输入如下的指令："提供一个如何使用FileInfo.Open的C#代码示例"
ChartGPT写出的代码和本文中的小编提供的代码的区别。 ChartGPT发展到现在已经非常聪明了，但需要使用这提供非常专业的问题，才可能有比较好的源代码示例； 而本文中， 小编已经帮您列出来基本所有类和所有方法的使用示例， 而且这些示例基本都是一些网络大佬提供的源码，可以更方便的供一些开发菜鸟或者资深开发参考和学习。
FileInfo.Open所在的类及名称空间
FileInfo.Open是System.IO下的方法。
FileInfo.Open怎么使用?
FileInfo.Open使用上比较简单，可以参考MSDN中的帮助文档，也参考本文中提供的7个使用示例。
FileInfo.Open菜鸟教程
对于菜鸟来说，本文中提供的7个FileInfo.Open写法都将非常直观的帮您掌握FileInfo.Open的用法，是一个不错的参考教程。
本文中的FileInfo.Open方法示例由csref.cn整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。