C#递归拷贝文件夹下文件以及文件夹

演示用递归的方法复制指定文件夹下所有文件(包括子文件夹)到指定位置，比较简单，主要是递归调用，以及字节流读取写入字节操作。直接上代码！

界面设计（wpf设计）

 1 <window x:class="lddecryption.mainwindow"
 2         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 5         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 6         xmlns:local="clr-namespace:lddecryption"
 7         mc:ignorable="d"
 8         title="mainwindow" height="200" width="600">
 9     <grid>
10         <grid.rowdefinitions>
11             <rowdefinition/>
12             <rowdefinition/>
13             <rowdefinition height="auto"/>
14         </grid.rowdefinitions>
15         <dockpanel grid.row="0" verticalalignment="center">
16             <textblock text="源路径"/>
17             <button content="..." name="btnsourceurl" dockpanel.dock="right" width="60" click="btnsourceurl_click"/>
18             <textbox name="txtsourceurl"/>
19         </dockpanel>
20         <dockpanel grid.row="1" verticalalignment="center">
21             <textblock text="目的路径"/>
22             <button content="..." name="btndesurl" dockpanel.dock="right" width="60" click="btndesurl_click"/>
23             <textbox name="txtdesurl"/>
24         </dockpanel>
25         <dockpanel grid.row="3">
26             <button content="确定" name="btnok" width="60" click="btnok_click"/>
27         </dockpanel>
28     </grid>
29 </window>

后台代码

  1 using microsoft.win32;
  2 using system;
  3 using system.collections.generic;
  4 using system.io;
  5 using system.linq;
  6 using system.text;
  7 using system.threading.tasks;
  8 using system.windows;
  9 using system.windows.controls;
 10 using system.windows.data;
 11 using system.windows.documents;
 12 using system.windows.forms;
 13 using system.windows.input;
 14 using system.windows.media;
 15 using system.windows.media.imaging;
 16 using system.windows.navigation;
 17 using system.windows.shapes;
 18 
 19 namespace lddecryption
 20 {
 21     /// <summary>
 22     /// mainwindow.xaml 的交互逻辑
 23     /// </summary>
 24     public partial class mainwindow : window
 25     {
 26         public mainwindow()
 27         {
 28             initializecomponent();
 29         }
 30 
 31         private void btnsourceurl_click(object sender, routedeventargs e)
 32         {
 33             //openfiledialog openfiledialog = new openfiledialog();
 34             //openfiledialog.showdialog();
 35             folderbrowserdialog folderbrowser = new folderbrowserdialog();
 36             folderbrowser.description = "选择源路径";
 37             folderbrowser.shownewfolderbutton = false;
 38             folderbrowser.rootfolder = environment.specialfolder.mycomputer;
 39             if (folderbrowser.showdialog() == system.windows.forms.dialogresult.ok)
 40             {
 41                 this.txtsourceurl.text = folderbrowser.selectedpath;
 42             }
 43         }
 44 
 45         private void btndesurl_click(object sender, routedeventargs e)
 46         {
 47             folderbrowserdialog folderbrowser = new folderbrowserdialog();
 48             folderbrowser.description = "选择目的路径";
 49             folderbrowser.shownewfolderbutton = true;
 50             folderbrowser.rootfolder = environment.specialfolder.mycomputer;
 51             if (folderbrowser.showdialog() == system.windows.forms.dialogresult.ok)
 52             {
 53                 this.txtdesurl.text = folderbrowser.selectedpath;
 54             }
 55         }
 56 
 57         private void btnok_click(object sender, routedeventargs e)
 58         {
 59             var sour = this.txtsourceurl.text.trim();
 60             if (!directory.exists(sour))
 61             {
 62                 system.windows.messagebox.show("源路径不存在");
 63                 return;
 64             }
 65             var des = txtdesurl.text.trim();
 66             if (!directory.exists(des))
 67             {
 68                 directory.createdirectory(des);
 69             }
 70             descryptioncopy(sour, des);
 71             system.windows.messagebox.show("ok!", "", messageboxbutton.ok);
 72         }
 73 
 74         /// <summary>
 75         /// 复制文件夹==递归方法
 76         /// </summary>
 77         /// <param name="strsource">源文件夹</param>
 78         /// <param name="strdes">目标文件夹</param>
 79         private void descryptioncopy(string strsource, string strdes)
 80         {
 81             if (!directory.exists(strsource))
 82             {
 83                 return;
 84             }
 85             //
 86             var strdesnew = system.io.path.combine(strdes, system.io.path.getfilename(strsource));
 87             if (!directory.exists(strdesnew))
 88             {
 89                 directory.createdirectory(strdesnew);
 90             }
 91             var filelist = directory.getfilesystementries(strsource);
 92             if (filelist == null || filelist.length == 0)
 93             {
 94                 return;
 95             }
 96             for (int i = 0; i < filelist.length; i++)
 97             {
 98                 var file = filelist[i];
 99                 if (directory.exists(file))
100                 {
101                     var des = system.io.path.combine(strdesnew, system.io.path.getfilename(file));
102                     descryptioncopy(file, strdesnew);
103                 }
104                 else
105                 {
106                     var des = system.io.path.combine(strdesnew, system.io.path.getfilename(file));
107                     filecopy(file, des);
108                 }
109             }
110         }
111 
112         /// <summary>
113         /// 文件拷贝
114         /// </summary>
115         /// <param name="filesource"></param>
116         /// <param name="filedestination"></param>
117         private void filecopy(string filesource, string filedestination)
118         {
119             filestream readstream = new filestream(filesource, filemode.open, fileaccess.read, fileshare.readwrite);
120             var buff = new byte[1024 * 1024 * 10];//10m
121             filestream writstream = new filestream(filedestination, filemode.openorcreate, fileaccess.write, fileshare.read);
122             //
123             int off;
124             do
125             {
126                 off = readstream.read(buff, 0, buff.length);
127                 writstream.write(buff, 0, off);
128             } while (off > 0);
129             readstream.close();
130             writstream.flush();
131             writstream.close();
132         }
133 
134     }
135 }

//

system.io.file.copy(file, path, true);此方法即可复制指定文件到指定目录。