Asp.net对文件夹和文件的操作类

using System;
using System.IO;
using System.Web;

namespace SEC
{
    /**//// <summary>
    /// 对文件和文件夹的操作类
    /// </summary>
    public class FileControl
    {
        public FileControl()
        {
           
        }
        /**//// <summary>
        /// 在根目录下创建文件夹
        /// </summary>
        /// <param name="FolderPath">要创建的文件路径</param>
        public void CreateFolder(string FolderPathName)
        {
            if(FolderPathName.Trim().Length>0)
            {
                try
                {
                    string CreatePath = System.Web.HttpContext.Current.Server.MapPath

("../../../Images/"+FolderPathName).ToString();
                    if(!Directory.Exists(CreatePath))
                    {
                        Directory.CreateDirectory(CreatePath);
                    }     
                }
                catch
                {
                    throw;
                }
            }
        }

        /**//// <summary>
        /// 删除一个文件夹下面的字文件夹和文件
        /// </summary>
        /// <param name="FolderPathName"></param>
        public void DeleteChildFolder(string FolderPathName)
        {
            if(FolderPathName.Trim().Length>0)
            {
                try
                {
                    string CreatePath = System.Web.HttpContext.Current.Server.MapPath

(FolderPathName).ToString();
                    if(Directory.Exists(CreatePath))
                    {
                        Directory.Delete(CreatePath,true);
                    }     
                }
                catch
                {
                    throw;
                }
            }
        }

        /**//// <summary>
        /// 删除一个文件
        /// </summary>
        /// <param name="FilePathName"></param>
        public void DeleteFile(string FilePathName)
        {
            try
            {
                FileInfo DeleFile = new FileInfo(System.Web.HttpContext.Current.Server.MapPath

(FilePathName).ToString());
                DeleFile.Delete();
            }
            catch
            {
            }
        }
        public void CreateFile(string FilePathName)
        {
            try
            {
                //创建文件夹
                string[] strPath= FilePathName.Split('/');
                CreateFolder(FilePathName.Replace("/" + strPath[strPath.Length-1].ToString(),"")); //创建文件

夹
                FileInfo CreateFile =new FileInfo(System.Web.HttpContext.Current.Server.MapPath

(FilePathName).ToString());         //创建文件
                if(!CreateFile.Exists)
                {
                    FileStream FS=CreateFile.Create();     
                    FS.Close();
                }
            }
            catch
            {
            }
        }
        /**//// <summary>
        /// 删除整个文件夹及其字文件夹和文件
        /// </summary>
        /// <param name="FolderPathName"></param>
        public void DeleParentFolder(string FolderPathName)
        {
            try
            {
                DirectoryInfo DelFolder = new DirectoryInfo(System.Web.HttpContext.Current.Server.MapPath

(FolderPathName).ToString());
                if(DelFolder.Exists)
                {
                    DelFolder.Delete(); 
                }
            }
            catch
            {
            }
        }
        /**//// <summary>
        /// 在文件里追加内容
        /// </summary>
        /// <param name="FilePathName"></param>
        public void ReWriteReadinnerText(string FilePathName,string WriteWord)
        {
            try
            {
                //建立文件夹和文件
                //CreateFolder(FilePathName);
                CreateFile(FilePathName);
                //得到原来文件的内容
                FileStream FileRead=new FileStream(System.Web.HttpContext.Current.Server.MapPath

(FilePathName).ToString(),FileMode.Open,FileAccess.ReadWrite);
                StreamReader FileReadWord=new StreamReader(FileRead,System.Text.Encoding.Default);
                string OldString = FileReadWord.ReadToEnd().ToString();
                OldString = OldString + WriteWord; 
                //把新的内容重新写入
                StreamWriter FileWrite=new StreamWriter(FileRead,System.Text.Encoding.Default);
                FileWrite.Write(WriteWord);
                //关闭
                FileWrite.Close();
                FileReadWord.Close();
                FileRead.Close();
            }
            catch
            {
                //    throw;
            }
        }

        /**//// <summary>
        /// 在文件里追加内容
        /// </summary>
        /// <param name="FilePathName"></param>
        public string ReaderFileData(string FilePathName)
        {
            try
            {
    
                FileStream FileRead=new FileStream(System.Web.HttpContext.Current.Server.MapPath

(FilePathName).ToString(),FileMode.Open,FileAccess.Read);
                StreamReader FileReadWord=new StreamReader(FileRead,System.Text.Encoding.Default);
                string TxtString = FileReadWord.ReadToEnd().ToString();                
                //关闭
                FileReadWord.Close();
                FileRead.Close();
                return TxtString;
            }
            catch
            {
                throw;
            }
        }
        /**//// <summary>
        /// 读取文件夹的文件
        /// </summary>
        /// <param name="FilePathName"></param>
        /// <returns></returns>
        public DirectoryInfo checkValidSessionPath(string FilePathName)
        {               
            try
            {
                DirectoryInfo MainDir = new DirectoryInfo(System.Web.HttpContext.Current.Server.MapPath

(FilePathName));
                return MainDir;    
               
            }
            catch
            {
                throw;
            }
        }
    }
}