Ｃ＃ 创建文件夹
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。
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if (!Directory.Exists(sPath))
{
Directory.CreateDirectory(sPath);
}
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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。
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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 {}
}
}
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以下代码演示了如何计算文件夹大小。
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// 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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