复制目录及其内容异步(Copy directories and their contents async)

复制目录及其内容异步(Copy directories and their contents async)

我在MSDN上找到了这个解决方案，它可以将文件从一个目录复制到另一个目录，但它只从主目录而不是子目录复制。

如何修改此解决方案，以便复制所有文件夹及其内容？

string StartDirectory = @"C:\Users\..."; string EndDirectory = @"C:\Users\...."; //Creates all of the directories and sub-directories foreach (string dirPath in Directory.GetDirectories(StartDirectory, "*", SearchOption.AllDirectories)) Directory.CreateDirectory(dirPath.Replace(StartDirectory, EndDirectory)); foreach (string filename in Directory.EnumerateFiles(StartDirectory)) { using (FileStream SourceStream = File.Open(filename, FileMode.Open)) { using (FileStream DestinationStream = File.Create(EndDirectory + filename.Substring(filename.LastIndexOf('\\')))) { await SourceStream.CopyToAsync(DestinationStream); } } }

I have found this solution on MSDN that can copy files from a one directory to another, but it only copies from the main directory and not the sub-directories.

How can I modify this solution so it will also copy all of the folders and their contents?

string StartDirectory = @"C:\Users\..."; string EndDirectory = @"C:\Users\...."; //Creates all of the directories and sub-directories foreach (string dirPath in Directory.GetDirectories(StartDirectory, "*", SearchOption.AllDirectories)) Directory.CreateDirectory(dirPath.Replace(StartDirectory, EndDirectory)); foreach (string filename in Directory.EnumerateFiles(StartDirectory)) { using (FileStream SourceStream = File.Open(filename, FileMode.Open)) { using (FileStream DestinationStream = File.Create(EndDirectory + filename.Substring(filename.LastIndexOf('\\')))) { await SourceStream.CopyToAsync(DestinationStream); } } }

最满意答案

展开第一个循环以包围内部循环，它应该工作。 您正在使用第一个for循环搜索所有文件夹，但仅枚举顶级文件夹中的文件。 您还需要枚举每个子文件夹中的文件。 此外，在这种情况下，DirectoryInfo将比Directory更容易使用。

DirectoryInfo StartDirectory = new DirectoryInfo(@"C:\Users\..."); DirectoryInfo EndDirectory = new DirectoryInfo(@"C:\Users\...."); //Creates all of the directories and sub-directories foreach (DirectoryInfo dirInfo in StartDirectory.GetDirectories("*", SearchOption.AllDirectories)) { string dirPath = dirInfo.FullName; string outputPath = dirPath.Replace(StartDirectory.FullName, EndDirectory.FullName); Directory.CreateDirectory(outputPath); foreach (FileInfo file in dirInfo.EnumerateFiles()) { using (FileStream SourceStream = file.OpenRead()) { using (FileStream DestinationStream = File.Create(outputPath + file.Name)) { SourceStream.CopyToAsync(DestinationStream); } } } }

solved it with two loops, one for all of the sub-directories (the first) and one for the main directory:

foreach (string dirPath in Directory.GetDirectories(StartDirectory, "*", SearchOption.AllDirectories)) { Directory.CreateDirectory(dirPath.Replace(StartDirectory, EndDirectory)); foreach (string filename in Directory.EnumerateFiles(dirPath)) { using (FileStream SourceStream = File.Open(filename, FileMode.Open)) { using (FileStream DestinationStream = File.Create(filename.Replace(StartDirectory, EndDirectory))) { await SourceStream.CopyToAsync(DestinationStream); } } } } foreach (string filename in Directory.EnumerateFiles(StartDirectory)) { using (FileStream SourceStream = File.Open(filename, FileMode.Open)) { using (FileStream DestinationStream = File.Create(EndDirectory + filename.Substring(filename.LastIndexOf('\\')))) { await SourceStream.CopyToAsync(DestinationStream); } } }