C#读写共享文件夹

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。

 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();
                 }
                 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！");
             }
         }
     }}

转自:http://www.cnblogs.com/ManMonth/archive/2011/10/11/2206998.html