C#如何：複製、刪除和移動檔案和檔案夾

https://msdn.microsoft.com/zh-cn/library/cc148994

如何：複製、刪除和移動檔案和檔案夾

Visual Studio 2013 其他版本

以下樣本說明如何使用 System.IO 命名空間中的 System.IO.File、System.IO.Directory、System.IO.FileInfo 和 System.IO.DirectoryInfo 類以同步方式複製、移動和刪除檔案和檔案夾。 這些樣本沒有提供進度列或其他任何使用者介面。 如果您想提供一個標準進度對話方塊，請參見如何：提供檔案操作進度對話方塊（C# 編程指南）。

在操作多個檔案時，請使用 System.IO.FileSystemWatcher 提供一些事件，以便可以利用這些事件計算進度。 另一種方法是使用平台叫用來調用 Windows Shell 中相應的檔案相關方法。 有關如何非同步執行這些檔案操作的資訊，請參見非同步檔案 I/O。 樣本

下面的樣本示範如何複製檔案和目錄。 C#

// Simple synchronous file copy operations with no user interface.// To run this sample, first create the following directories and files:// C:\Users\Public\TestFolder// C:\Users\Public\TestFolder\test.txt// C:\Users\Public\TestFolder\SubDir\test.txtpublic class SimpleFileCopy{    static void Main()    {        string fileName = "test.txt";        string sourcePath = @"C:\Users\Public\TestFolder";        string targetPath =  @"C:\Users\Public\TestFolder\SubDir";        // Use Path class to manipulate file and directory paths.        string sourceFile = System.IO.Path.Combine(sourcePath, fileName);        string destFile = System.IO.Path.Combine(targetPath, fileName);        // To copy a folder's contents to a new location:        // Create a new target folder, if necessary.        if (!System.IO.Directory.Exists(targetPath))        {            System.IO.Directory.CreateDirectory(targetPath);        }        // To copy a file to another location and         // overwrite the destination file if it already exists.        System.IO.File.Copy(sourceFile, destFile, true);        // To copy all the files in one directory to another directory.        // Get the files in the source folder. (To recursively iterate through        // all subfolders under the current directory, see        // "How to: Iterate Through a Directory Tree.")        // Note: Check for target path was performed previously        //       in this code example.        if (System.IO.Directory.Exists(sourcePath))        {            string[] files = System.IO.Directory.GetFiles(sourcePath);            // Copy the files and overwrite destination files if they already exist.            foreach (string s in files)            {                // Use static Path methods to extract only the file name from the path.                fileName = System.IO.Path.GetFileName(s);                destFile = System.IO.Path.Combine(targetPath, fileName);                System.IO.File.Copy(s, destFile, true);            }        }        else        {            Console.WriteLine("Source path does not exist!");        }        // Keep console window open in debug mode.        Console.WriteLine("Press any key to exit.");        Console.ReadKey();    }}

下面的樣本示範如何移動檔案和目錄。 C#

// Simple synchronous file move operations with no user interface.public class SimpleFileMove{    static void Main()    {        string sourceFile = @"C:\Users\Public\public\test.txt";        string destinationFile = @"C:\Users\Public\private\test.txt";        // To move a file or folder to a new location:        System.IO.File.Move(sourceFile, destinationFile);        // To move an entire directory. To programmatically modify or combine        // path strings, use the System.IO.Path class.        System.IO.Directory.Move(@"C:\Users\Public\public\test\", @"C:\Users\Public\private");    }}

下面的樣本示範如何刪除檔案和目錄。 C#