如何創建遞歸函數來複制所有文件和文件夾

Question

我想創建一個函數，它將遞歸地將源文件夾及其內的所有文件和文件夾複製到不同的位置。

目前，我必須定義主文件夾內的每個文件夾，這使得代碼變得臃腫和冗餘。

這樣做的更有效的方法是什麼？

Answer 1

來源：C# - Copy files and folders recursively from source to destination folder in c-sharp

public static void CopyFolder(string sourceFolder, string destFolder) 
{ 
    if (!Directory.Exists(destFolder)) 
     Directory.CreateDirectory(destFolder); 

    string[] files = Directory.GetFiles(sourceFolder); 
    foreach (string file in files) 
    { 
     string name = Path.GetFileName(file); 
     string dest = Path.Combine(destFolder, name); 
     File.Copy(file, dest); 
    } 
    string[] folders = Directory.GetDirectories(sourceFolder); 
    foreach (string folder in folders) 
    { 
     string name = Path.GetFileName(folder); 
     string dest = Path.Combine(destFolder, name); 
     CopyFolder(folder, dest); 
    } 
} 

Answer 2

看看我的問題：

performance of copying directories 我用並行的foreach，它是非常快的

private static void CopyAll(string SourcePath, string DestinationPath) 
{ 

string[] directories = System.IO.Directory.GetDirectories(SourcePath, "*.*", SearchOption.AllDirectories); 

Parallel.ForEach(directories, dirPath => 
{ 
    Directory.CreateDirectory(dirPath.Replace(SourcePath, DestinationPath)); 
}); 

string[] files = System.IO.Directory.GetFiles(SourcePath, "*.*", SearchOption.AllDirectories); 

Parallel.ForEach(files, newPath => 
{ 
    File.Copy(newPath, newPath.Replace(SourcePath, DestinationPath)); 
}); 
} 

Answer 3

使用GetDirectories/GetFiles的是有些出在我眼裏的日期，我會用Directory.EnumerateFileSystemEntries(source);，因爲它更快。

Answer 4

做這種方式

void Copy(string sourceDir, string targetDir) 
{ 
    Directory.CreateDirectory(targetDir); 
    foreach (var file in Directory.GetFiles(sourceDir)) 
     File.Copy(file, Path.Combine(targetDir, Path.GetFileName(file))); 

    foreach (var directory in Directory.GetDirectories(sourceDir)) 
     Copy(directory, Path.Combine(targetDir, Path.GetFileName(directory))); 
}