asp.net 文件的操作

最近稍微对Asp.net文件操作的做了以下总结，下面贴出让大家共享

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Web;
using System.Web.Security;
using System.Web.UI;

namespace Tjjj

...{
    /**//// <summary>
    /// 文件操作类
    /// </summary>
   public class FileFuncation
    ...{
       /**//// <summary>
       /// 删除文件
       /// </summary>
       /// <param name="name">文件加名称</param>
       public static void  DelFile(string name)
       ...{

               File.Delete(HttpContext.Current.Server.MapPath(name));
   
 
       }
       /**//// <summary>
       /// 删除文件夹
       /// </summary>
       /// <param name="name">文件夹名称</param>
       public static void DelFolder(string name)
       ...{
           Directory.Delete(HttpContext.Current.Server.MapPath(name), true);         
       }
       /**//// <summary>
       /// 新建文件夹
       /// </summary>
       /// <param name="str">文件夹路径及保存名称</param>
       public static void Newfolder(string str)
       ...{
           string text1 = "";
           string[] textArray1 = str.Split(new char[] ...{ '/' });
           for (int num1 = 0; num1 < textArray1.Length; num1++)
           ...{
               text1 = text1 + textArray1[num1] + "/";
               if (!Directory.Exists(HttpContext.Current.Server.MapPath(text1)))
               ...{
                   Directory.CreateDirectory(HttpContext.Current.Server.MapPath(text1));
               }
           }
       }
       /**//// <summary>
       /// 读取文件
       /// </summary>
       /// <param name="fileName">文件名称</param>
       /// <returns></returns>
       public static string ReadFile(string fileName)
       ...{
           string strContent=string.Empty;
           if (File.Exists(HttpContext.Current.Server.MapPath(fileName)))
           ...{
               Encoding fileEncoding = TxtFileEncoding.GetEncoding(HttpContext.Current.Server.MapPath(fileName), Encoding.GetEncoding("GB2312"));//取得这txt文件的编码 

               StreamReader reader1 = new StreamReader(HttpContext.Current.Server.MapPath(fileName),fileEncoding);
               strContent = reader1.ReadToEnd();
               reader1.Close();
               
           }
           return strContent;
       }
       /**//// <summary>
       /// 保存文件
       /// </summary>
       /// <param name="filename">文件名称</param>
       /// <param name="content">保存的数据</param>
       public static void SaveFile(string filename,string content)
       ...{

           StreamWriter sr = new StreamWriter(HttpContext.Current.Server.MapPath(filename),false,Encoding.GetEncoding("GB2312"));
           sr.WriteLine(content);
           sr.Close();
       }
       /**//// <summary>
       /// 创建文件
       /// </summary>
       /// <param name="filePath">文件路径/文件名</param>
       /// <param name="strContent"></param>
       public static void CreatFile(string filePath,string strContent)
       ...{
           StreamWriter sr = new StreamWriter(HttpContext.Current.Server.MapPath(filePath));           
           sr.Write(strContent);
           sr.Close();
           
       }
       /**//// <summary>
       /// 移动文件
       /// </summary>
       /// <param name="Name">文件名</param>
       /// <param name="DestName">移动后的文件名</param>
       public static void ReName(string Name, string DestName)
       ...{
           File.Move(HttpContext.Current.Server.MapPath(Name), HttpContext.Current.Server.MapPath(DestName));
          
 
       }
       /**//// <summary>
       /// 文件下载
       /// </summary>
       /// <param name="path">文件保存路径</param>
       public static void DownLoad(string path)
       ...{
            System.IO.FileInfo fi = new System.IO.FileInfo(path);
           HttpContext.Current.Response.Clear();
           HttpContext.Current.Response.ClearHeaders();
           HttpContext.Current.Response.Buffer = false;

           HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(System.Text.Encoding.UTF8.GetBytes(path)));
           HttpContext.Current.Response.AppendHeader("Content-Length", fi.Length.ToString());
           HttpContext.Current.Response.ContentType = "application/octet-stream";
           HttpContext.Current.Response.WriteFile(path);
           HttpContext.Current.Response.Flush();
           HttpContext.Current.Response.End();
       }
   }
}