第一次写随笔，发个文件操作类作为首次吧。FileManager

相关的文件操作都应该可以应用到了。

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Text;
  4 using System.IO;
  5 using System.Web;
  6 using System.Web.UI.WebControls;
  7 using Microsoft.VisualBasic.FileIO;
  8 
  9 namespace SSS.Components
 10 {
 11     /// <summary>
 12     /// IO操作
 13     /// </summary>
 14     public static class FileManager
 15     {
 16         /// <summary>
 17         /// 上传文件
 18         /// </summary>
 19         /// <param name="targetDir"></param>
 20         /// <param name="fileUpload"></param>
 21         /// <returns></returns>
 22         public static bool UploadFile(string targetDir, FileUpload fileUpload)
 23         {
 24             string fileName = Path.Combine(targetDir, fileUpload.FileName);
 25             if (!File.Exists(fileName))
 26             {
 27                 fileUpload.SaveAs(fileName);
 28                 return true;
 29             }
 30             return false;
 31         }
 32 
 33         /// <summary>
 34         /// 判断指定名称的文件或目录是否存在。
 35         /// </summary>
 36         /// <param name="path"></param>
 37         /// <returns></returns>
 38         public static bool IsEntriesExists(string path)
 39         {
 40             if (Directory.Exists(path)) return true;
 41             if (File.Exists(path)) return true;
 42             return false;
 43         }
 44 
 45         /// <summary>
 46         /// 创建目录
 47         /// </summary>
 48         /// <param name="directoryPath">目录完全路径</param>
 49         public static void CreateDirectory(string directoryPath)
 50         {
 51             if (!Directory.Exists(directoryPath))
 52                 Directory.CreateDirectory(directoryPath);
 53         }
 54 
 55         /// <summary>
 56         ///  重命名文件或文件夹
 57         /// </summary>
 58         /// <param name="path">文件或文件夹的完全路径</param>
 59         /// <param name="newName">新名称，无需路径</param>
 60         /// <returns></returns>
 61         public static void RenameEntries(string path, string newName)
 62         {
 63             if (Directory.Exists(path))
 64             {
 65                 FileSystem.RenameDirectory(path, newName);
 66             }
 67             if (File.Exists(path))
 68             {
 69                 FileSystem.RenameFile(path, newName);
 70             }
 71         }
 72 
 73 
 74 
 75         /// <summary>
 76         /// 删除
 77         /// </summary>
 78         /// <param name="path"></param>
 79         public static void DeleteEntries(string path)
 80         {
 81             if (Directory.Exists(path))
 82             {
 83                 Directory.Delete(path, true);
 84             }
 85             if (File.Exists(path))
 86             {
 87                 File.Delete(path);
 88             }
 89         }
 90 
 91         /// <summary>
 92         /// 返回以KB为单位的文件长度
 93         /// </summary>
 94         /// <param name="fileLength"></param>
 95         /// <returns></returns>
 96         public static string GetKBSize(long fileLength)
 97         {
 98             return (Convert.ToInt32(fileLength / 1024) + 1).ToString() + " KB";
 99         }
 
         private static Encoding _globalEncoding = Encoding.GetEncoding("GB2312");
 
         public static Encoding GlobalEncoding
         {
             get { return _globalEncoding; }
             set { _globalEncoding = value; }
         }
 
         #region 读写文件
 
         public static string ReadFile(string filePath)
         {
             return FileManager.ReadFile(filePath, null);
         }
 
         public static string ReadFile(string filePath, Encoding encoding)
         {
             if (IsEntriesExists(filePath))
             {
                 try
                 {
                     string content = encoding != null ? File.ReadAllText(filePath, encoding) : File.ReadAllText(filePath);
                     return content;
                 }
                 catch { }
             }
             return string.Empty;
         }
 
         public static bool WriteFile(string filePath, string contents)
         {
             return FileManager.WriteFile(filePath, contents, null);
         }
 
         public static bool WriteFile(string filePath, string contents, Encoding encoding)
         {
             if (!string.IsNullOrEmpty(filePath))
             {
                 try
                 {
                     string directoryPath = Path.GetDirectoryName(filePath);
                     if (!Directory.Exists(directoryPath))
                         CreateDirectory(directoryPath);
 
                     if (encoding != null)
                         File.WriteAllText(filePath, contents, encoding);
                     else
                         File.WriteAllText(filePath, contents);
                     return true;
                 }
                 catch { }
             }
             return false;
         }
         #endregion
     }