如何將多個文件夾複製到另一個文件夾？

Question

現在是這個問題： 我有很多代碼都做同樣的事情。也就是說，它將兩個文件夾的內容複製到目標文件夾中，並將它們合併到目標文件夾中。我的問題是，我找不到（經過很多谷歌搜索）如何實際複製源目錄+內容而不僅僅是其內容和子文件夾然後最終合併。

這可能是我如何獲取目錄：我使用文件夾選擇對話框，將路徑名添加到列表框（要顯示），然後從列表框中的項目創建（字符串）目錄列表。

這是目前爲止的代碼。 （有些來自MSDN）

public static void CopyAll(DirectoryInfo source, DirectoryInfo target) 
    { 
     if (source.FullName.ToLower() == target.FullName.ToLower()) 
     { 
      return; 
     } 

     // Check if the target directory exists, if not, create it. 
     if (Directory.Exists(target.FullName) == false) 
     { 
      Directory.CreateDirectory(target.FullName); 
     } 

     // Copy each file into it's new directory. 
     foreach (FileInfo fi in source.GetFiles()) 
     { 
      fi.CopyTo(Path.Combine(target.ToString(), fi.Name), true); 
     } 

     // Copy each subdirectory using recursion. 
     foreach (DirectoryInfo diSourceSubDir in source.GetDirectories()) 
     { 
      DirectoryInfo nextTargetSubDir = 
       target.CreateSubdirectory(diSourceSubDir.Name); 
      CopyAll(diSourceSubDir, nextTargetSubDir); 
     } 
    } 
    //This is inside a button click Method 

    List<string> pathList = new List<string>(); 
     pathList = lstBox.Items.Cast<String>().ToList(); 

     string sourceDirectory; 
     string targetDirectory; 

     DirectoryInfo dirSource; 
     DirectoryInfo dirTarget; 

     for (int i = 0 ; i < pathList.Count; i++) 
     { 
      sourceDirectory = pathList.ElementAt(i); 
      targetDirectory = browserSave.SelectedPath; //browserSave is the Folder Selection Dialog 
      dirSource = new DirectoryInfo(sourceDirectory); 
      dirTarget = new DirectoryInfo(targetDirectory); 

      CopyAll(dirSource, dirTarget);     
     } 

煩人的C＃沒有Directory.Copy函數，這將是非常有用的。 重述。

我選擇文件夾1. 我選擇文件夾2. 我選擇目的地文件夾。 I按OK。 預期結果：目標文件夾內有兩個文件夾，即文件夾1和文件夾2。兩者都有裏面的所有文件。 實際結果：目標文件夾合併了鬆散文件，並且源文件夾的子目錄完好無損。 （這是什麼煩人）

我希望這是足夠的信息，爲您的專業人士提供幫助。

Answer 1

的問題是你永遠做一個新的目標，你的目的地 - 這將使新的目標具有相同名稱的來源爲循環的每個迭代，然後複製到目標。

for (int i = 0 ; i < pathList.Count; i++) 
{ 
    sourceDirectory = pathList.ElementAt(i); 
    targetDirectory = browserSave.SelectedPath; //browserSave is the Folder Selection Dialog 
    dirSource = new DirectoryInfo(sourceDirectory); 

    string targetPath = target.Fullname+ 
        Path.DirectorySeparatorChar+ 
        sourceDirectory.Split(Path.DirectorySeparatorChar).Last()); 

    Directory.CreateDirectory(targetPath); 

    dirTarget = new DirectoryInfo(targetPath); 

    CopyAll(dirSource, dirTarget);     
} 

警告我沒有測試，所以我可能有錯別字，但你的想法。

Answer 2

而不是DirectoryInfo通過string作爲參數。請參閱下面的代碼。

private void DirectoryCopy(
    string sourceDirName, string destDirName, bool copySubDirs) 
{ 
    DirectoryInfo dir = new DirectoryInfo(sourceDirName); 
    DirectoryInfo[] dirs = dir.GetDirectories(); 

    // If the source directory does not exist, throw an exception. 
    if (!dir.Exists) 
    { 
     throw new DirectoryNotFoundException(
      "Source directory does not exist or could not be found: " 
      + sourceDirName); 
    } 

    // If the destination directory does not exist, create it. 
    if (!Directory.Exists(destDirName)) 
    { 
     Directory.CreateDirectory(destDirName); 
    } 


    // Get the file contents of the directory to copy. 
    FileInfo[] files = dir.GetFiles(); 

    foreach (FileInfo file in files) 
    { 
     // Create the path to the new copy of the file. 
     string temppath = Path.Combine(destDirName, file.Name); 

     // Copy the file. 
     file.CopyTo(temppath, false); 
    } 

    // If copySubDirs is true, copy the subdirectories. 
    if (copySubDirs) 
    { 

     foreach (DirectoryInfo subdir in dirs) 
     { 
      // Create the subdirectory. 
      string temppath = Path.Combine(destDirName, subdir.Name); 

      // Copy the subdirectories. 
      DirectoryCopy(subdir.FullName, temppath, copySubDirs); 
     } 
    } 
} 

在main函數中。

static void Main(string[] args) 
    { 

     List<string> directoryNames = new List<string>() // For multiple source folders 
     { 
      "C:\\Folder1", "C:\\Folder2" 
     }; 

     string destDirName = "C:\\Folder3"; 
     foreach (string sourceDirName in directoryNames) 
     { 
      DirectoryCopy(sourceDirName, destDirName, true) 
     } 
    } 

Answer 3

這將幫助你解決你的問題。這個功能是一個通用的遞歸函數複製文件夾與或不合並子文件夾。

public static void DirectoryCopy(string sourceDirPath, string destDirName, bool isCopySubDirs) 
{ 
    // Get the subdirectories for the specified directory. 
    DirectoryInfo directoryInfo = new DirectoryInfo(sourceDirPath); 
    DirectoryInfo[] directories = directoryInfo.GetDirectories(); 
    if (!directoryInfo.Exists) 
    { 
     throw new DirectoryNotFoundException("Source directory does not exist or could not be found: " 
      + sourceDirPath); 
    } 
    DirectoryInfo parentDirectory = Directory.GetParent(directoryInfo.FullName); 
    destDirName = System.IO.Path.Combine(parentDirectory.FullName, destDirName); 

    // If the destination directory doesn't exist, create it. 
    if (!Directory.Exists(destDirName)) 
    { 
     Directory.CreateDirectory(destDirName); 
    } 
    // Get the files in the directory and copy them to the new location. 
    FileInfo[] files = directoryInfo.GetFiles(); 

    foreach (FileInfo file in files) 
    { 
     string tempPath = System.IO.Path.Combine(destDirName, file.Name); 

     if (File.Exists(tempPath)) 
     { 
      File.Delete(tempPath); 
     } 

     file.CopyTo(tempPath, false); 
    } 
    // If copying subdirectories, copy them and their contents to new location using recursive function. 
    if (isCopySubDirs) 
    { 
     foreach (DirectoryInfo item in directories) 
     { 
      string tempPath = System.IO.Path.Combine(destDirName, item.Name); 
      DirectoryCopy(item.FullName, tempPath, isCopySubDirs); 
     } 
    } 
} 

Answer 4

請嘗試以下操作。您顯然需要在調用操作時相應地設置源文件夾和目標文件夾。此外，我會建議你不要在事件處理程序中嵌入任何邏輯。 希望這有助於。

  Action<string, string> action = null; 
      action = (source,dest) => 
       { 
        if(Directory.Exists(source)) 
        { 
         DirectoryInfo sInfo = new DirectoryInfo(source); 
         if (!Directory.Exists(dest)) 
         { 
          Directory.CreateDirectory(dest); 
         } 
         Array.ForEach(sInfo.GetFiles("*"), a => File.Copy(a.FullName, Path.Combine(dest,a.Name))); 
         foreach (string dir in Directory.EnumerateDirectories(source)) 
         { 
          string sSubDirPath = dir.Substring(source.Length+1,dir.Length-source.Length-1); 
          string dSubDirPath = Path.Combine(dest,sSubDirPath); 
          action(dir, dSubDirPath); 
         } 
        } 
       }; 
      action(@"C:\source", @"C:\dest");