门户网站设计特点,营销策划咨询机构,网站会员系统方案,果洛wap网站建设哪家好C# 备份目标文件夹
方法1#xff1a;通过 递归 或者 迭代 结合 C# 方法
参数说明#xff1a;
sourceFolder#xff1a;源文件夹路径destinationFolder#xff1a;目标路径excludeNames#xff1a;源文件夹中不需备份的文件或文件夹路径哈希表errorLog#xff1a;输出错…C# 备份目标文件夹
方法1通过 递归 或者 迭代 结合 C# 方法
参数说明
sourceFolder源文件夹路径destinationFolder目标路径excludeNames源文件夹中不需备份的文件或文件夹路径哈希表errorLog输出错误log
递归实现 private bool CopyAllFolder(string sourceFolder, string destinationFolder, HashSetstring excludeNames, out string errorLog){errorLog string.Empty;try{if (!Directory.Exists(destinationFolder)){Directory.CreateDirectory(destinationFolder);}string[] directories Directory.GetDirectories(sourceFolder);string[] files Directory.GetFiles(sourceFolder);foreach (string file in files){if (excludeNames.Count ! 0 excludeNames.Contains(file)){continue;}try{if (!BRTools.IsFileReady(file) || !BRTools.IsNotFileInUse(file, out errorLog)) // 检测文件是否被占用{return false;}string destinationFile Path.Combine(destinationFolder, Path.GetFileName(file));File.Copy(file, destinationFile, true);}catch (Exception ex){errorLog $Error copying file {file}: {ex.Message}\n;return false;}}foreach (string directory in directories){if (excludeNames.Count ! 0 excludeNames.Contains(directory)){continue;}string destinationSubFolder Path.Combine(destinationFolder, Path.GetFileName(directory));if (!CopyAllFolder(directory, destinationSubFolder, excludeNames, out string subfolderErrorLog)){errorLog subfolderErrorLog;return false;}}return true;}catch (Exception ex){errorLog $Error during folder copy: Message {ex.Message}, StackTrace {ex.StackTrace}\n;return false;}}迭代实现 private bool CopyAllFolder(string sourceFolder, string destinationFolder, HashSetstring excludeNames, out string errorLog){errorLog string.Empty;try{if (!Directory.Exists(destinationFolder)){Directory.CreateDirectory(destinationFolder);}Stackstring directoryStack new Stackstring();directoryStack.Push(sourceFolder);while (directoryStack.Count 0){string currentDirectory directoryStack.Pop();string[] directories Directory.GetDirectories(currentDirectory);string[] files Directory.GetFiles(currentDirectory);foreach (string file in files){if (excludeNames.Count ! 0 excludeNames.Contains(file)){continue;}try{if (!BRTools.IsFileReady(file) || !BRTools.IsNotFileInUse(file, out errorLog)){return false;}string destinationFile Path.Combine(destinationFolder, Path.GetFileName(file));File.Copy(file, destinationFile, true);}catch (Exception ex){errorLog $Error copying file {file}: {ex.Message}\n;return false;}}foreach (string directory in directories){if (excludeNames.Count ! 0 excludeNames.Contains(directory)){continue;}string destinationSubFolder Path.Combine(destinationFolder, Path.GetFileName(directory));if (!CopyAllFolder(directory, destinationSubFolder, excludeNames, out string subfolderErrorLog)){errorLog subfolderErrorLog;return false;}directoryStack.Push(directory);}}return true;}catch (Exception ex){errorLog $Error during folder copy: Message {ex.Message}, StackTrace {ex.StackTrace}\n;return false;}}方法2利用 Windows API [DllImport(shell32.dll, CharSet CharSet.Auto)]public static extern int SHFileOperation(ref SHFILEOPSTRUCT lpFileOp);[StructLayout(LayoutKind.Sequential, CharSet CharSet.Auto)]public struct SHFILEOPSTRUCT{public IntPtr hwnd;public int wFunc;public string pFrom;public string pTo;public short fFlags;public bool fAnyOperationsAborted;public IntPtr hNameMappings;}const int FO_COPY 0x0002;const int FOF_NOCONFIRMATION 0x0010;const int FOF_SILENT 0x0004;const int FOF_NO_UI FOF_NOCONFIRMATION | FOF_SILENT;private bool CopyDirectory(string sourceDir, string destDir, out string errorLog){errorLog string.Empty;try{SHFILEOPSTRUCT fileOp new SHFILEOPSTRUCT();fileOp.wFunc FO_COPY;fileOp.pFrom sourceDir \0 \0; // Must end with double null characterfileOp.pTo destDir \0 \0; // Must end with double null character//fileOp.fFlags FOF_NO_UI;fileOp.fFlags FOF_NO_UI | FOF_NOCONFIRMATION; // 忽略UI和确认对话框int result SHFileOperation(ref fileOp);// 检查返回值if (result ! 0){errorLog $SHFileOperation failed with error code: {result};return false;}return true;}catch (Exception ex){errorLog $Failed to copy the entire folder {sourceDir}: Message {ex.Message}, StackTrace {ex.StackTrace}\n;return false;}}private bool CopyFolder(string sourceFolder, string destinationFolder, HashSetstring excludeNames, out string errorLog){errorLog string.Empty;try{if (!CopyDirectory(sourceFolder, destinationFolder, out errorLog)){this.logger.Warning($errorLog: {errorLog});return false;}if (excludeNames.Count ! 0){foreach (var item in excludeNames){var targetPath Path.Combine(destinationFolder, GetSonFolderPath(sourceFolder, item)); // 获取已备份路径下需排除的文件夹或文件路径if (Directory.Exists(item)){ DeleteDir(targetPath);}if(File.Exists(item)){DeleteDir(targetPath);}}}return true;}catch(Exception ex){errorLog $Error during folder copy, and exception is: Message {ex.Message}, StackTrace {ex.StackTrace}\n;return false;}}private string GetSonFolderPath(string folderPath, string targetPath){string result string.Empty;try{folderPath folderPath.TrimEnd(Path.DirectorySeparatorChar) Path.DirectorySeparatorChar;if (!isFilePath(targetPath)){targetPath targetPath.TrimEnd(Path.DirectorySeparatorChar) Path.DirectorySeparatorChar;}else{targetPath Path.GetDirectoryName(targetPath).TrimEnd(Path.DirectorySeparatorChar);}if (targetPath.StartsWith(folderPath, StringComparison.OrdinalIgnoreCase)){result targetPath.Substring(folderPath.Length);}}catch (Exception){result string.Empty;}return result;}private bool isFilePath(string targetPath){if (Path.HasExtension(targetPath) File.Exists(targetPath))return true;return false;}private void DeleteFile(string file){if (File.Exists(file)){FileInfo fi new FileInfo(file);if (fi.IsReadOnly){fi.IsReadOnly false;}File.Delete(file);}}private void DeleteDir(string dir){if (Directory.Exists(dir)){foreach (string childName in Directory.GetFileSystemEntries(dir)){if (File.Exists(childName)){FileInfo fi new FileInfo(childName);if (fi.IsReadOnly){fi.IsReadOnly false;}File.Delete(childName);}elseDeleteDir(childName);}Directory.Delete(dir, true);}}注意方法2有一个漏洞该方法无法成功捕捉到源文件夹下被占用的文件信息
