請問如何copy整個文件夾

Question

没有现成的.
=========================
using System;
using System.IO;namespace FrameworkExamples
{
    //HOW TO: recursively copy all the files and sub dirs in a given directory
    //        to another directory    class SampleRecursiveCopy
    {
        static void Main()
        {
            string srcdir, destdir;
            bool   recursive;            recursive = true;
            srcdir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory), "images");
            destdir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory), "images2");            FileCopy(srcdir, destdir, recursive);
        }        private static void FileCopy(string srcdir, string destdir, bool recursive)
        {
            DirectoryInfo   dir;
            FileInfo[]      files;
            DirectoryInfo[] dirs;
            string          tmppath;            //determine if the destination directory exists, if not create it
            if (! Directory.Exists(destdir))
            {
                Directory.CreateDirectory(destdir);
            }            dir = new DirectoryInfo(srcdir);
            
            //if the source dir doesn't exist, throw
            if (! dir.Exists)
            {
                throw new ArgumentException("source dir doesn't exist -> " + srcdir);
            }            //get all files in the current dir
            files = dir.GetFiles();            //loop through each file
            foreach(FileInfo file in files)
            {
                //create the path to where this file should be in destdir
                tmppath=Path.Combine(destdir, file.Name);                                //copy file to dest dir
                file.CopyTo(tmppath, false);
            }            //cleanup
            files = null;
            
            //if not recursive, all work is done
            if (! recursive)
            {
                return;
            }            //otherwise, get dirs
            dirs = dir.GetDirectories();            //loop through each sub directory in the current dir
            foreach(DirectoryInfo subdir in dirs)
            {
                //create the path to the directory in destdir
                tmppath = Path.Combine(destdir, subdir.Name);                //recursively call this function over and over again
                //with each new dir.
                FileCopy(subdir.FullName, tmppath, recursive);
            }
            
            //cleanup
            dirs = null;
            
            dir = null;
        }
    }
}

Answer 1

方法一：使用API函数
public class ShellFiles{[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto, Pack=1)]public struct SHFILEOPSTRUCT{public IntPtr hwnd;[MarshalAs(UnmanagedType.U4)] public int wFunc;public string pFrom;public string pTo;public short fFlags;[MarshalAs(UnmanagedType.Bool)] public bool fAnyOperationsAborted;public IntPtr hNameMappings;public string lpszProgressTitle;}[DllImport("shell32.dll", CharSet=CharSet.Auto)]static extern int SHFileOperation(ref SHFILEOPSTRUCT FileOp);const int FO_DELETE = 3;const int FO_COPY = 2;const int FOF_ALLOWUNDO = 0x40;const int FOF_NOCONFIRMATION = 0x10; //Don't prompt the user.;const int FOF_SIMPLEPROGRESS = 0x100;public void SendToRecyclyBin(string path){SHFILEOPSTRUCT shf = new SHFILEOPSTRUCT();shf.wFunc = FO_DELETE;shf.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION;shf.pFrom = path;SHFileOperation(ref shf);}public void Copy(string from, string to){DirectoryInfo source = new DirectoryInfo(from);DirectoryInfo dest = new DirectoryInfo(to);if(!dest.Exists)dest.Create();SHFILEOPSTRUCT shf = new SHFILEOPSTRUCT();shf.wFunc = FO_COPY;shf.fFlags = FOF_ALLOWUNDO;shf.pFrom = from;shf.pTo = to;SHFileOperation(ref shf);} 
}
方法二：递归调用(程序简单，但比较慢)
public sealed class DirectoryUtils
{
private DirectoryUtils()
{
} 
/// <summary>
///    Copies a directory to a new location.
/// </summary>
/// <param name="src">Source directory path</param>
/// <param name="dest">Destination directory path</param> public static void CopyDirectory(String src, String dest)
{
DirectoryInfo di = new DirectoryInfo(src); foreach(FileSystemInfo fsi in di.GetFileSystemInfos()) 
{
String destName = Path.Combine(dest, fsi.Name);
if (fsi is FileInfo)
File.Copy(fsi.FullName, destName);
else 
{
Directory.CreateDirectory(destName);
CopyDirectory(fsi.FullName, destName);
}
}
}
}