using?System;
using?System.Collections.Generic;
using?System.Text;
using?System.IO;

namespace?Helper
{
????public?class?MyFileStream
????{
????????private?FileStream?filestream;
????????public?MyFileStream（string?path?FileMode?mode）
????????{
????????????try
????????????{
????????????????filestream?=?new?FileStream（path?mode）;

????????????}
????????????catch?（System.Security.SecurityException）
????????????{
????????????????throw?new?Exception（“打開文件失??！沒有足夠權(quán)限！“）;
????????????}
????????????catch?（IOException）
????????????{
????????????????throw?new?Exception（“打開文件失?。\\O錯(cuò)誤！“）;
????????????}
????????????catch
????????????{
????????????????throw?new?Exception（“打開文件失?。∥床东@錯(cuò)誤原因！“）;
????????????}
????????}
????????///?

????????///?讀文件，
????????///?
???????
????????public?int?readfile（ref?byte[]?buffer?int?len）
????????{
????????????if?（filestream?!=?null）
????????????{
????????????????int?lenth?=?filestream.Read（buffer?0?len）;
????????????????return?lenth;
????????????}
????????????else
????????????{
????????????????return?-1;
????????????}
????????}
????????///?

????????///?設(shè)置流文件的當(dāng)前位置
????????///?
???????
????????public?void?SetOffset（int?offset?SeekOrigin?origin）
????????{
????????????if?（filestream?!=?null）
????????????{
????????????????filestream.Seek（offset?origin）;
????????????}
????????}
????????///?

????????///?寫文件
????????///?
??????
????????public?bool?writefile（byte[]?buffer?int?len）
????????{

????????????if?（filestream?!=?null）
????????????{
????????????????filestream.Write（buffer?0?len）;
????????????????return?true;
????????????}
????????????else
????????????{
????????????????return?false;
????????????}
????????}
????????///?

????????///?獲得流長度
????????///?

????????///?
????????public?long?getlenth（）
????????{
????????????if?（filestream?!=?null）
????????????????return?filestream.Length;
????????????else
????????????????return?-1;
????????}
????????///?

????????///?關(guān)閉文件流
????????///?

????????public?void?close（）
????????{
????????????filestream.Close（）;

????????}
????}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????20480??2008-12-31?08:17??MyFTP\Helper\bin\Debug\Helper.dll

?????文件??????32256??2008-12-31?08:17??MyFTP\Helper\bin\Debug\Helper.pdb

?????文件???????2033??2008-12-28?21:29??MyFTP\Helper\Helper.csproj

?????文件???????2290??2008-12-28?20:37??MyFTP\Helper\MyFileStream.cs

?????文件???????6922??2008-12-28?21:29??MyFTP\Helper\MySocket.cs

?????文件??????20480??2008-12-31?08:17??MyFTP\Helper\obj\Debug\Helper.dll

?????文件??????32256??2008-12-31?08:17??MyFTP\Helper\obj\Debug\Helper.pdb

?????文件????????130??2008-12-31?08:17??MyFTP\Helper\obj\Helper.csproj.FileList.txt

?????文件???????1325??2008-12-28?14:36??MyFTP\Helper\Properties\AssemblyInfo.cs

?????文件???????7297??2008-12-28?21:29??MyFTP\Helper\Protocol.cs

?????文件??????20480??2008-12-31?08:17??MyFTP\MyFTP\bin\Debug\Helper.dll

?????文件??????32256??2008-12-31?08:17??MyFTP\MyFTP\bin\Debug\Helper.pdb

?????文件??????20480??2008-12-31?08:17??MyFTP\MyFTP\bin\Debug\MyFTP.exe

?????文件??????19968??2008-12-31?08:17??MyFTP\MyFTP\bin\Debug\MyFTP.pdb

?????文件???????5632??2005-12-08?14:51??MyFTP\MyFTP\bin\Debug\MyFTP.vshost.exe

?????文件???????2150??2008-12-28?14:48??MyFTP\MyFTP\MyFTP_server.csproj

?????文件??????20480??2008-12-31?08:17??MyFTP\MyFTP\obj\Debug\MyFTP.exe

?????文件??????19968??2008-12-31?08:17??MyFTP\MyFTP\obj\Debug\MyFTP.pdb

?????文件???????4790??2008-12-31?08:17??MyFTP\MyFTP\obj\Debug\ResolveAssemblyReference.cache

?????文件????????170??2008-12-31?08:17??MyFTP\MyFTP\obj\MyFTP_server.csproj.FileList.txt

?????文件??????11893??2008-12-31?08:17??MyFTP\MyFTP\Program.cs

?????文件???????1175??2008-12-28?14:33??MyFTP\MyFTP\Properties\AssemblyInfo.cs

?????文件???????1880??2008-12-28?14:37??MyFTP\MyFTP.sln

????..A..H.?????22528??2008-12-31?08:18??MyFTP\MyFTP.suo

?????文件??????20480??2008-12-31?08:17??MyFTP\MyFTP_client\bin\Debug\Helper.dll

?????文件??????32256??2008-12-31?08:17??MyFTP\MyFTP_client\bin\Debug\Helper.pdb

?????文件??????24576??2008-12-31?08:17??MyFTP\MyFTP_client\bin\Debug\MyFTP_client.exe

?????文件??????24064??2008-12-31?08:17??MyFTP\MyFTP_client\bin\Debug\MyFTP_client.pdb

?????文件???????5632??2005-12-08?14:51??MyFTP\MyFTP_client\bin\Debug\MyFTP_client.vshost.exe

?????文件???????2164??2008-12-28?15:19??MyFTP\MyFTP_client\MyFTP_client.csproj

............此處省略32個(gè)文件信息