C#中如何创建文件夹

2024-07-05 19:30| 来源: 网络整理| 查看: 265

C#中对文件夹操作需要用到Directory Class。其中提供了创建、删除、移动、枚举等静态方法。该类不能被继承。

以下代码实现了创建文件夹。

if (!Directory.Exists(sPath)) { Directory.CreateDirectory(sPath); }

以下是MSDN上Directory Class的Sample code。

http://msdn.microsoft.com/en-us/library/system.io.directory.aspx

以下代码首先检查指定的文件夹是否存在，若存在则删除之，否则创建之。接下来移动文件夹，在其中创建文件并统计文件夹中文件数目。

using System; using System.IO; class Test { public static void Main() { // Specify the directories you want to manipulate. string path = @"c:\MyDir"; string target = @"c:\TestDir"; try { // Determine whether the directory exists. if (!Directory.Exists(path)) { // Create the directory it does not exist. Directory.CreateDirectory(path); } if (Directory.Exists(target)) { // Delete the target to ensure it is not there. Directory.Delete(target, true); } // Move the directory. Directory.Move(path, target); // Create a file in the directory. File.CreateText(target + @"\myfile.txt"); // Count the files in the target directory. Console.WriteLine("The number of files in {0} is {1}", target, Directory.GetFiles(target).Length); } catch (Exception e) { Console.WriteLine("The process failed: {0}", e.ToString()); } finally {} } }

以下代码演示了如何计算文件夹大小。

// The following example calculates the size of a directory // and its subdirectories, if any, and displays the total size // in bytes. using System; using System.IO; public class ShowDirSize { public static long DirSize(DirectoryInfo d) { long Size = 0; // Add file sizes. FileInfo[] fis = d.GetFiles(); foreach (FileInfo fi in fis) { Size += fi.Length; } // Add subdirectory sizes. DirectoryInfo[] dis = d.GetDirectories(); foreach (DirectoryInfo di in dis) { Size += DirSize(di); } return(Size); } public static void Main(string[] args) { if (args.Length != 1) { Console.WriteLine("You must provide a directory argument at the command line."); } else { DirectoryInfo d = new DirectoryInfo(args[0]); long dsize = DirSize(d); Console.WriteLine("The size of {0} and its subdirectories is {1} bytes.", d, dsize); } } }

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