文件的一些操作

/**//**//**//**//**//**//**//// <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("../"+FolderPathName).ToString(); 
                    if(!Directory.Exists(CreatePath)) 
                    ......{ 
                        Directory.CreateDirectory(CreatePath); 
                    } 
                    else
                    ......{
                        Response.Write("The Folder Has Exists.");
                    }
                } 
                catch 
                ......{ 
                    throw; 
                } 
            } 
        } 

        /**//**//**//**//**//**//**//// <summary> 
        /// 删除一个文件夹下面的子文件夹和文件 
        /// </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; 
            } 
        }