问题:复制文件夹的时候,只需要覆盖修改过的文件即可,其他同名文件可以直接跳过,但是计算机总是问是否全部覆盖或者全部取消.全部覆盖浪费太多时间,全部取消则达不到我们的要求.
解决:文件复制管理
1 选择源文件和目标文件
2 碰到同目录同文件时,自动检查最后修改日期,不同则直接覆盖,相同则跳过
3 自动遍历所有子文件夹或者文件
方法:
1 建立源文件树(treeview1) 源文件和目标文件树(treeview2)
2 启动时自动加载系统盘符
3 单击结点时自动遍历当前结点
4 点击复制键,自动检查和复制源文件到目标目录,并显示状态.
运行界面如下:
详细代码如下:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace FileOperation
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
treeView1.Nodes.Add("我的电脑");
treeView2.Nodes.Add("我的电脑");
}
private void EnumDrives(TreeNode ParentNode,TreeView tr)
{
if (ParentNode.Nodes.Count == 0)
{
DriveInfo[] myAllDrivers = DriveInfo.GetDrives();
foreach (DriveInfo drive in myAllDrivers)
{
tr.SelectedNode = ParentNode;
string type;
if (drive.DriveType.ToString() == "Fixed")
type = "本地磁盘";
else
type = "可移动磁盘";
TreeNode TempNode = new TreeNode();
TempNode.Text = drive.Name + type;//drive.DriveType.ToString();
TempNode.Tag = drive.Name;
TempNode.ImageIndex = 1;
TempNode.SelectedImageIndex = 1;
tr.SelectedNode.Nodes.Add(TempNode);
tr.SelectedNode.Nodes[tr.SelectedNode.Nodes.Count - 1].EnsureVisible();
}
}
}
// 递归实现加载目录
private void EnumDirectories(TreeNode ParentNode,TreeView tr)
{
tr.SelectedNode = ParentNode;
string DirectoryPath;
try
{
DirectoryPath = ParentNode.Tag.ToString();
}
catch
{
return;
}
if (ParentNode.Nodes.Count == 0)
{
if (DirectoryPath.Substring(DirectoryPath.Length - 1) != @"")
DirectoryPath += @"";
try
{
//遍历当前文件夹下的文件夹
foreach (string directory in Directory.GetDirectories(DirectoryPath))
{
TreeNode TempNode = new TreeNode();
TempNode.Text = directory.Substring(directory.LastIndexOf(@""") + 1);
TempNode.Tag = directory;
TempNode.ImageIndex = 3;
TempNode.SelectedImageIndex = 4;
tr.SelectedNode.Nodes.Add(TempNode);
tr.SelectedNode.Nodes[tr.SelectedNode.Nodes.Count - 1].EnsureVisible();
}
//************************************************编历当前文件夹下的文件
if (tr.Name.ToString() == "treeView1")
{
DirectoryInfo dir = new DirectoryInfo(DirectoryPath);
FileInfo[] files = dir.GetFiles();
foreach (FileInfo file in files)
{
TreeNode TempNode = new TreeNode();
TempNode.Text = file.Name;
TempNode.Tag = file.DirectoryName +"""" +file.Name;
TempNode.ImageIndex = 5;
TempNode.SelectedImageIndex = 5;
tr.SelectedNode.Nodes.Add(TempNode);
tr.SelectedNode.Nodes[tr.SelectedNode.Nodes.Count - 1].EnsureVisible();
}
}
//************************************************
}
catch (Exception)
{
}
if (tr.Name.ToString() == "treeView1")
lb_yuanshi.Text = treeView1.SelectedNode.Tag.ToString();
else
lb_obj.Text = treeView2.SelectedNode.Tag.ToString();
}
}
private void treeView1_DoubleClick(object sender, EventArgs e)
{
// lb_yuanshi.Text = treeView1.SelectedNode.Tag.ToString();
}
private void treeView1_MouseClick(object sender, MouseEventArgs e)
{
}
///<summary>
///初始化原始目录树
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
private void treeView1_AfterSelect_1(object sender, TreeViewEventArgs e)
{
if (e.Node.Text.ToString() != "我的电脑")
EnumDirectories(e.Node,treeView1);
else
{
e.Node.ImageIndex = 0; //电脑图标固定
EnumDrives(e.Node,treeView1);
}
}
///<summary>
///
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
private void bt_copy_Click(object sender, EventArgs e)
{
this.btInfo.Text = "正在复制文件或者文件夹！请稍候......";
try
{
if (MessageBox.Show("复制" + treeView1.SelectedNode.Tag.ToString() + " 到: " + treeView2.SelectedNode.Tag.ToString(), "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1) == DialogResult.OK)
{
CopyFileFolder(treeView1.SelectedNode.Tag.ToString(), treeView2.SelectedNode.Tag.ToString());
this.btInfo.Text = "";
treeView2.Nodes.RemoveAt(0);
treeView2.Nodes.Add("我的电脑");
}
}
catch
{
this.btInfo.Text = "";
MessageBox.Show("请选择目标目录（文件）和原始目录（文件）");
}
}
///<summary>
///初始化目标目录树
///</summary>
///<param name="sender"></param>
///<param name="e"></param>
private void treeView2_AfterSelect(object sender, TreeViewEventArgs e)
{
if (e.Node.Text.ToString() != "我的电脑")
EnumDirectories(e.Node, treeView2);
else
{
e.Node.ImageIndex = 0; //电脑图标固定
EnumDrives(e.Node,treeView2);
}
}
private void lb_obj_Click(object sender, EventArgs e)
{
}
private void treeView2_Click(object sender, EventArgs e)
{
}
///<summary>
///复制文件或者目录
///</summary>
///<param name="path">原始目录</param>
///<param name="objpath">目的目录</param>
private void CopyFileFolder(string path, string objpath)
{
try
{
FileInfo fi = new FileInfo(path);
if (fi.Attributes.ToString().Contains("Directory")) //判断字符串为目录还是文件
{
// MessageBox.Show("目录 ");
CopyFolder(path, objpath);
}
else
{
// MessageBox.Show("文件 ");
//if(File.Exists(@"c:"tempuploads"newFile.txt")) //如果文件存在
if (File.Exists(objpath + path.Substring(path.LastIndexOf(@""") + 1)))
{
FileInfo f1 = new FileInfo(path);
FileInfo f2 = new FileInfo(objpath + path.Substring(path.LastIndexOf(@""") + 1));
if (f1.LastWriteTime != f2.LastWriteTime||f1.Name!=f2.Name) //文件修改时间一样跳过
{
File.Copy(@path, objpath + path.Substring(path.LastIndexOf(@""") + 1), true);
// MessageBox.Show("检查复制成功");
}
}
else
{
File.Copy(@path, objpath + path.Substring(path.LastIndexOf(@""") + 1),true);
// MessageBox.Show("复制成功");
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public static void FileCopy(string path, string objpath)
{
if (File.Exists(objpath))
{
FileInfo f1 = new FileInfo(path);
FileInfo f2 = new FileInfo(objpath);
if (f1.LastWriteTime != f2.LastWriteTime) //文件修改时间一样跳过
{
File.Copy(@path, objpath, true);
// MessageBox.Show("检查复制成功");
}
}
else
{
File.Copy(@path, objpath , true);
// MessageBox.Show("复制成功");
}
}
///<summary>
///创建文件夹
///</summary>
///<param name="SourcePath">原始路径</param>
///<returns></returns>
public static bool CreateFolder(string SourcePath)
{
try
{
Directory.CreateDirectory(SourcePath);
return true;
}
catch
{
return false;
}
}
///<summary>
///复制文件夹[循环遍历]
///</summary>
///<param name="SourcePath">原始路径</param>
///<param name="DestinPath">目地的路径</param>
///<returns></returns>
public static bool CopyFolder(string SourcePath, string DestinPath)
{
if (Directory.Exists(SourcePath))
{
CreateFolder(DestinPath + SourcePath.Substring(SourcePath.LastIndexOf(@""") +1));//第一次创建跟目录文件夹
string sourcePath = SourcePath;//[变化的]原始路径
string destinPath = DestinPath + SourcePath.Substring(SourcePath.LastIndexOf(@""") + 1);//[变化的]目地的路径
Queue<string> source = new Queue<string>();//存原始文件夹路径
Queue<string> destin = new Queue<string>();//存目地的文件夹路径
bool IsHasChildFolder = true;//是否有子文件夹
string tempDestinPath = string.Empty;//临时目地的,将被存于destin中
while (IsHasChildFolder)
{
string[] fileList = Directory.GetFileSystemEntries(sourcePath);// 得到源目录的文件列表，该里面是包含文件以及目录路径的一个数组
for (int i = 0; i < fileList.Length; i++)// 遍历所有的文件和目录
{
tempDestinPath = destinPath + """" + Path.GetFileName(fileList[i]);//取得子文件路径
if (Directory.Exists(fileList[i]))//存在文件夹时
{
source.Enqueue(fileList[i]);//当前的子目录的原始路径进队列
destin.Enqueue(tempDestinPath);//当前的子目录的目地的路径进队列
CreateFolder(tempDestinPath);//创建子文件夹
}
else//存在文件
{
// File.Copy(fileList[i], tempDestinPath, true);//复制文件
FileCopy(fileList[i], tempDestinPath);
}
}
if (source.Count > 0 && source.Count == destin.Count)//存在子文件夹时
{
sourcePath = source.Dequeue();
destinPath = destin.Dequeue();
}
else
{
IsHasChildFolder = false;
}
}
return true;
}
else
{
return false;
}
}
}
}
