C#读写共享文件夹

比眉伴天荒 2022-08-02 07:14 168阅读 0赞

## [C\#读写共享文件夹][C] ##

该试验分以下步骤：

1、在服务器设置一个共享文件夹，在这里我的服务器ip地址是10.80.88.180，共享文件夹名字是test，test里面有两个文件：good.txt和bad.txt，访问权限，用户名是admin，密码是admin。

2、新建一个webapplication项目，在前台页面加一个listbox，ID是ListBox1.

3、添加后台代码如下：其中包含的功能是读文件，这里以读good 文件为例；写文件，这里以写bad文件为例；还有是将test文件夹下的文件名列到listbox中。

![复制代码][copycode.gif]

using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Web;  
using System.Web.UI;  
using System.Web.UI.WebControls;  
using System.Text;  
using System.Diagnostics;  
using System.IO;  
  
  
namespace WebApplication2  
\{  
  
     public  class FileShare  
    \{  
         public FileShare() \{ \}  
  
         public  static  bool connectState( string path)  
        \{  
             return connectState(path, "", "");  
        \}  
  
         public  static  bool connectState( string path, string userName, string passWord)  
         \{  
             bool Flag =  false;  
            Process proc =  new Process();  
             try  
            \{  
                proc.StartInfo.FileName =  " cmd.exe ";  
                proc.StartInfo.UseShellExecute =  false;  
                proc.StartInfo.RedirectStandardInput =  true;  
                proc.StartInfo.RedirectStandardOutput= true;  
                proc.StartInfo.RedirectStandardError= true;  
                proc.StartInfo.CreateNoWindow= true;  
                proc.Start();  
                 string dosLine =  @" net use  " + path +  "  /User: " + userName +  "   " + passWord +  "  /PERSISTENT:YES ";  
                proc.StandardInput.WriteLine(dosLine);  
                proc.StandardInput.WriteLine( " exit ");  
                 while (!proc.HasExited)  
                \{  
                    proc.WaitForExit( 1000);  
                \}  
                 string errormsg = proc.StandardError.ReadToEnd();  
                proc.StandardError.Close();  
                 if ( string.IsNullOrEmpty(errormsg))  
                \{  
                    Flag =  true;  
                \}  
                 else  
                \{  
                     throw  new Exception(errormsg);  
                \}  
            \}  
             catch (Exception ex)  
            \{  
                 throw ex;  
            \}  
             finally  
            \{  
                proc.Close();  
                proc.Dispose();  
            \}  
             return Flag;  
        \}  
  
  
         // read file   
         public  static  void ReadFiles( string path)  
        \{  
             try  
            \{  
                 //  Create an instance of StreamReader to read from a file.  
                 //  The using statement also closes the StreamReader.   
                 using (StreamReader sr =  new StreamReader(path))  
                \{  
                    String line;  
                     //  Read and display lines from the file until the end of   
                     //  the file is reached.   
                     while ((line = sr.ReadLine()) !=  null)  
                    \{  
                        Console.WriteLine(line);  
                          
                    \}  
                \}  
            \}  
             catch (Exception e)  
            \{  
                 //  Let the user know what went wrong.   
                Console.WriteLine( " The file could not be read: ");  
                Console.WriteLine(e.Message);  
            \}   
  
        \}  
  
         // write file   
         public  static  void WriteFiles( string path)  
        \{  
             try  
            \{  
                 //  Create an instance of StreamWriter to write text to a file.  
                 //  The using statement also closes the StreamWriter.   
                 using (StreamWriter sw =  new StreamWriter(path))  
                \{  
                     //  Add some text to the file.   
                    sw.Write( " This is the  ");  
                    sw.WriteLine( " header for the file. ");  
                    sw.WriteLine( " \------------------- ");  
                     //  Arbitrary objects can also be written to the file.   
                    sw.Write( " The date is:  ");  
                    sw.WriteLine(DateTime.Now);  
                \}  
            \}  
             catch (Exception e)  
            \{  
                 //  Let the user know what went wrong.   
                Console.WriteLine( " The file could not be read: ");  
                Console.WriteLine(e.Message);  
            \}  
        \}  
    \}  
  
     public  partial  class \_Default : System.Web.UI.Page  
    \{  
         protected  void Page\_Load( object sender, EventArgs e)  
        \{  
              
             bool status =  false;  
  
             // 连接共享文件夹   
            status = FileShare.connectState( @" \\\\10.80.88.180\\test ",  " admin ",  " admin ");  
             if (status)  
            \{  
                DirectoryInfo theFolder =  new DirectoryInfo( @" \\\\10.80.88.180\\test ");  
  
                 // 先测试读文件，把目录路径与文件名连接   
                 string filename = theFolder.ToString()+ " \\\\good.txt ";  
                FileShare.ReadFiles(filename);  
  
                 // 测试写文件，拼出完整的路径   
                filename = theFolder.ToString() +  " \\\\bad.txt ";  
                FileShare.WriteFiles(filename);  
                 
                 // 遍历共享文件夹，把共享文件夹下的文件列表列到listbox   
                 foreach (FileInfo nextFile  in theFolder.GetFiles())  
                \{  
                    ListBox1.Items.Add(nextFile.Name);  
                \}  
            \}  
             else  
            \{  
                ListBox1.Items.Add( " 未能连接！ ");  
            \}  
        \}  
    \}

![复制代码][copycode.gif]

按以上步骤，即可实现读写网络共享文件。

[C]: http://www.cnblogs.com/ManMonth/archive/2011/10/11/2206998.html
[copycode.gif]: /images/20220731/2afd2239fb4e4307940b1a9bc16c4db9.png