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c#使用file.copy實(shí)現(xiàn)文件備份示例

更新時(shí)間：2014年03月06日 12:02:11 作者：

需要把D盤Source文件夾中的所有名稱包含"LTE"的子文件夾Copy到E盤的Backup文件中，實(shí)現(xiàn)特定文件夾每天備份,下面使用file.copy實(shí)現(xiàn)一下這個(gè)功能

步驟：

1、遍歷D盤Source文件夾找出所有名稱包含LTE的文件，文件路徑存放到List<string>中
2、遍歷List<string>,把所有文件Copy到E盤的備份文件夾中

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.DirectoryServices;
using System.IO;

namespace CopyLTE
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                string txtPath = @"..\..\Dir\directory.txt";
                string srcPath = "";
                string aimPath = "";
                string KeyWords = "";
                List<string> KeyFloderList = new List<string>();
                if (File.Exists(txtPath) == false)
                {
                    Console.WriteLine("directory.txt不存在,無(wú)法獲取Copy路徑");
                }
                else
                {
                    GetCopyPath(txtPath, out srcPath, out aimPath, out KeyWords);
                    if (srcPath == "" || aimPath == "" || KeyWords == "")
                    {
                        Console.WriteLine("請(qǐng)?jiān)赿irectory.txt,輸入Copy的源文件夾,目的文件,和KeyWords");
                    }
                    else
                    {
                        DirectoryInfo FolderSource = new DirectoryInfo(srcPath);
                        foreach (DirectoryInfo NextFolder in FolderSource.GetDirectories())
                        {
                            if (NextFolder.FullName.Contains(KeyWords))
                            {
                                KeyFloderList.Add(NextFolder.FullName);
                            }
                        }
                    }
                }
                if (KeyFloderList.Count > 0)
                {
                    foreach (string FloderPath in KeyFloderList)
                    {
                        //Copy From Source To Backup
                        CopyDirectory(FloderPath, aimPath);
                    }
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        //
        private static void CopyDirectory(string srcdir, string desdir)
        {
            string folderName = srcdir.Substring(srcdir.LastIndexOf("\\") + 1);

string desfolderdir = desdir + "\\" + folderName;

            if (desdir.LastIndexOf("\\") == (desdir.Length - 1))
            {
                desfolderdir = desdir + folderName;
            }
            string[] filenames = Directory.GetFileSystemEntries(srcdir);

            foreach (string file in filenames)// 遍歷所有的文件和目錄
            {
                if (Directory.Exists(file))// 先當(dāng)作目錄處理如果存在這個(gè)目錄就遞歸Copy該目錄下面的文件
                {

                    string currentdir = desfolderdir + "\\" + file.Substring(file.LastIndexOf("\\") + 1);
                    if (!Directory.Exists(currentdir))
                    {
                        Directory.CreateDirectory(currentdir);
                    }

CopyDirectory(file, desfolderdir);
}

                else // 否則直接copy文件
                {
                    string srcfileName = file.Substring(file.LastIndexOf("\\") + 1);

                    srcfileName = desfolderdir + "\\" + srcfileName;
                    if (File.Exists(srcfileName))
                    {
                        File.Delete(srcfileName); //Delete Old Files
                    }

                    if (!Directory.Exists(desfolderdir))
                    {
                        Directory.CreateDirectory(desfolderdir);
                    }
                    File.Copy(file, srcfileName);
                }
            }
        }
        //取得路徑
        public static void GetCopyPath(string strTxt, out string From, out string To, out string keyWords)
        {
            try
            {
                string[] stringLines = File.ReadAllLines(strTxt, Encoding.Default);
                if (stringLines.Length >= 3)
                {
                    From = stringLines[0].ToString();
                    To = stringLines[1].ToString();
                    keyWords = stringLines[2].ToString();
                }
                else
                {
                    From = "";
                    To = "";
                    keyWords = "";
                    Console.WriteLine("請(qǐng)?jiān)赿irectory.txt,輸入Copy的源文件夾,目的文件,和KeyWords");
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}