.Net/C#: 实现支持断点续传多线程下载的 Http Web 客户端工具类 (第2版) (C# DIY HttpWebClient)

/* .Net/C#: 实现支持断点续传多线程下载的 Http Web 客户端工具类 (C# DIY HttpWebClient)
* Reflector 了一下 System.Net.WebClient ,改写或增加了若干:
* DownLoad、Upload 相关方法!
* DownLoad 相关改动较大!
* 增加了 DataReceive、ExceptionOccurrs 事件!
* 了解服务器端与客户端交互的 HTTP 协议参阅:
* 使文件下载的自定义连接支持 FlashGet 的断点续传多线程链接下载! JSP/Servlet 实现!
* http://blog.csdn.net/playyuer/archive/2004/08/02/58430.aspx
* 使文件下载的自定义连接支持 FlashGet 的断点续传多线程链接下载! C#/ASP.Net 实现!
* http://blog.csdn.net/playyuer/archive/2004/08/02/58281.aspx
*/
//2005-03-14 修订:
/* .Net/C#: 实现支持断点续传多线程下载的工具类
* Reflector 了一下 System.Net.WebClient ,改写或增加了若干:
* DownLoad、Upload 相关方法!
* 增加了 DataReceive、ExceptionOccurrs　事件
*/
namespace Microshaoft . Utils
{
using System ;
using System .IO ;
using System .Net ;
using System . Text ;
using System .Security ;
using System .Threading ;
using System .Collections.Specialized ;
/// <summary>
/// 记录下载的字节位置
/// </summary>
public class DownLoadState
{
private string _FileName;
private string _AttachmentName;
private int _Position;
private string _RequestURL;
private string _ResponseURL;
private int _Length;
private byte [] _Data;
public string FileName
{
get
{
return _FileName;
}
}
public int Position
{
get
{
return _Position;
}
}
public int Length
{
get
{
return _Length;
}
}
public string AttachmentName
{
get
{
return _AttachmentName;
}
}
public string RequestURL
{
get
{
return _RequestURL;
}
}
public string ResponseURL
{
get
{
return _ResponseURL;
}
}
public byte [] Data
{
get
{
return _Data;
}
}
internal DownLoadState ( string RequestURL, string ResponseURL, string FileName , string AttachmentName, int Position , int Length , byte [] Data )
{
this . _FileName = FileName ;
this . _RequestURL = RequestURL;
this . _ResponseURL = ResponseURL;
this . _AttachmentName = AttachmentName;
this . _Position = Position ;
this . _Data = Data ;
this . _Length = Length ;
}
internal DownLoadState ( string RequestURL, string ResponseURL, string FileName , string AttachmentName, int Position , int Length , ThreadCallbackHandler tch )
{
this . _RequestURL = RequestURL;
this . _ResponseURL = ResponseURL;
this . _FileName = FileName ;
this . _AttachmentName = AttachmentName;
this . _Position = Position ;
this . _Length = Length ;
this . _ThreadCallback = tch;
}
internal DownLoadState ( string RequestURL, string ResponseURL, string FileName , string AttachmentName, int Position , int Length )
{
this . _RequestURL = RequestURL;
this . _ResponseURL = ResponseURL;
this . _FileName = FileName ;
this . _AttachmentName = AttachmentName;
this . _Position = Position ;
this . _Length = Length ;
}
private ThreadCallbackHandler _ThreadCallback;
public HttpWebClient httpWebClient
{
get
{
return this . _hwc;
}
set
{
this . _hwc = value ;
}
}
internal Thread thread
{
get
{
return _thread;
}
set
{
_thread = value ;
}
}
private HttpWebClient _hwc;
private Thread _thread;
//
internal void StartDownloadFileChunk ()
{
if ( this . _ThreadCallback != null)
{
this . _ThreadCallback ( this . _RequestURL, this . _FileName, this . _Position, this . _Length ) ;
this . _hwc . OnThreadProcess ( this . _thread ) ;
}
}
}
//委托代理线程的所执行的方法签名一致
public delegate void ThreadCallbackHandler ( string S , string s, int I , int i ) ;
//异常处理动作
public enum ExceptionActions
{
Throw ,
CancelAll,
Ignore ,
Retry
}
/// <summary>
/// 包含 Exception 事件数据的类
/// </summary>
public class ExceptionEventArgs : System . EventArgs
{
private System . Exception _Exception ;
private ExceptionActions _ExceptionAction;
private DownLoadState _DownloadState;
public DownLoadState DownloadState
{
get
{
return _DownloadState;
}
}
public Exception Exception
{
get
{
return _Exception ;
}
}
public ExceptionActions ExceptionAction
{
get
{
return _ExceptionAction;
}
set
{
_ExceptionAction = value ;
}
}
internal ExceptionEventArgs ( System . Exception e, DownLoadState DownloadState )
{
this ._Exception = e;
this . _DownloadState = DownloadState;
}
}
/// <summary>
/// 包含 DownLoad 事件数据的类
/// </summary>
public class DownLoadEventArgs : System . EventArgs
{
private DownLoadState _DownloadState;
public DownLoadState DownloadState
{
get
{
return _DownloadState;
}
}
public DownLoadEventArgs ( DownLoadState DownloadState )
{
this . _DownloadState = DownloadState;
}
}
public class ThreadProcessEventArgs : System . EventArgs
{
private Thread _thread;
public Thread thread
{
get
{
return this . _thread;
}
}
public ThreadProcessEventArgs ( Thread thread )
{
this . _thread = thread;
}
}
/// <summary>
/// 支持断点续传多线程下载的类
/// </summary>
public class HttpWebClient
{
private static object _SyncLockObject = new object () ;
public delegate void DataReceiveEventHandler ( HttpWebClient Sender , DownLoadEventArgs e ) ;
public event DataReceiveEventHandler DataReceive; //接收字节数据事件
public delegate void ExceptionEventHandler ( HttpWebClient Sender , ExceptionEventArgs e ) ;
public event ExceptionEventHandler ExceptionOccurrs; //发生异常事件
public delegate void ThreadProcessEventHandler ( HttpWebClient Sender , ThreadProcessEventArgs e ) ;
public event ThreadProcessEventHandler ThreadProcessEnd; //发生多线程处理完毕事件
private int _FileLength; //下载文件的总大小
public int FileLength
{
get
{
return _FileLength;
}
}
/// <summary>
/// 分块下载文件
/// </summary>
/// <param name="Address">URL 地址</param>
/// <param name="FileName">保存到本地的路径文件名</param>
/// <param name="ChunksCount">块数,线程数</param>
public void DownloadFile ( string Address , string FileName , int ChunksCount )
{
int p = 0; // position
int s = 0; // chunk size
string a = null ;
HttpWebRequest hwrq;
HttpWebResponse hwrp = null ;
try
{
hwrq = ( HttpWebRequest ) WebRequest . Create ( this . GetUri ( Address )) ;
hwrp = ( HttpWebResponse ) hwrq . GetResponse () ;
long L = hwrp . ContentLength ;
hwrq . Credentials = this . m_credentials;
L = ((L == - 1 ) || (L > 0x7fffffff )) ? (( long ) 0x7fffffff ) : L ; //Int32.MaxValue 该常数的值为 2,147,483,647; 即十六进制的 0x7FFFFFFF
int l = ( int ) L ;
this . _FileLength = l;
//    在本地预定空间(竟然在多线程下不用先预定空间)
//    FileStream sw = new FileStream(FileName, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
//    sw.Write(new byte[l], 0, l);
//    sw.Close();
//    sw = null;
bool b = ( hwrp . Headers [ "Accept-Ranges" ] != null & hwrp . Headers [ "Accept-Ranges" ] == "bytes" ) ;
a = hwrp . Headers [ "Content-Disposition" ] ; //attachment
if ( a != null)
{
a = a . Substring ( a . LastIndexOf ( "filename=" ) + 9 ) ;
}
else
{
a = FileName ;
}
int ss = s;
if ( b )
{
s = l / ChunksCount;
if ( s < 2 * 64 * 1024 ) //块大小至少为 128 K 字节
{
s = 2 * 64 * 1024;
}
ss = s;
int i = 0;
while ( l > s )
{
l -= s;
if ( l < s )
{
s += l;
}
if ( i ++ > 0 )
{
DownLoadState x = new DownLoadState ( Address , hwrp . ResponseUri . AbsolutePath , FileName , a, p, s, new ThreadCallbackHandler ( this . DownloadFileChunk )) ;
//       单线程下载
//       x.StartDownloadFileChunk();
x . httpWebClient = this ;
//多线程下载
Thread t = new Thread (new ThreadStart ( x . StartDownloadFileChunk )) ;
//this.OnThreadProcess(t);
t . Start () ;
}
p += s;
}
s = ss;
byte [] buffer = this . ResponseAsBytes ( Address , hwrp, s, FileName ) ;
this . OnThreadProcess ( Thread . CurrentThread ) ;
//    lock (_SyncLockObject)
//    {
//     this._Bytes += buffer.Length;
//    }
}
}
catch ( Exception e )
{
ExceptionActions ea = ExceptionActions .Throw ;
if ( this . ExceptionOccurrs != null)
{
DownLoadState x = new DownLoadState ( Address , hwrp . ResponseUri . AbsolutePath , FileName , a, p, s ) ;
ExceptionEventArgs eea = new ExceptionEventArgs ( e, x ) ;
ExceptionOccurrs ( this , eea ) ;
ea = eea . ExceptionAction;
}
if ( ea == ExceptionActions .Throw)
{
if (!( e is WebException ) && !( e is SecurityException ))
{
throw new WebException ( "net_webclient" , e ) ;
}
throw ;
}
}
}
internal void OnThreadProcess ( Thread t )
{
if ( ThreadProcessEnd != null)
{
ThreadProcessEventArgs tpea = new ThreadProcessEventArgs ( t ) ;
ThreadProcessEnd ( this , tpea ) ;
}
}
/// <summary>
/// 下载一个文件块,利用该方法可自行实现多线程断点续传
/// </summary>
/// <param name="Address">URL 地址</param>
/// <param name="FileName">保存到本地的路径文件名</param>
/// <param name="Length">块大小</param>
public void DownloadFileChunk ( string Address , string FileName , int FromPosition, int Length )
{
HttpWebResponse hwrp = null ;
string a = null ;
try
{
//this._FileName = FileName;
HttpWebRequest hwrq = ( HttpWebRequest ) WebRequest . Create ( this . GetUri ( Address )) ;
//hwrq.Credentials = this.m_credentials;
hwrq . AddRange ( FromPosition ) ;
hwrp = ( HttpWebResponse ) hwrq . GetResponse () ;
a = hwrp . Headers [ "Content-Disposition" ] ; //attachment
if ( a != null)
{
a = a . Substring ( a . LastIndexOf ( "filename=" ) + 9 ) ;
}
else
{
a = FileName ;
}
byte [] buffer = this . ResponseAsBytes ( Address , hwrp, Length , FileName ) ;
//   lock (_SyncLockObject)
//   {
//    this._Bytes += buffer.Length;
//   }
}
catch ( Exception e )
{
ExceptionActions ea = ExceptionActions .Throw ;
if ( this . ExceptionOccurrs != null)
{
DownLoadState x = new DownLoadState ( Address , hwrp . ResponseUri . AbsolutePath , FileName , a, FromPosition, Length ) ;
ExceptionEventArgs eea = new ExceptionEventArgs ( e, x ) ;
ExceptionOccurrs ( this , eea ) ;
ea = eea . ExceptionAction;
}
if ( ea == ExceptionActions .Throw)
{
if (!( e is WebException ) && !( e is SecurityException ))
{
throw new WebException ( "net_webclient" , e ) ;
}
throw ;
}
}
}
internal byte [] ResponseAsBytes ( string RequestURL, WebResponse Response , long Length , string FileName )
{
string a = null ; //AttachmentName
int P = 0; //整个文件的位置指针
int num2 = 0;
try
{
a = Response . Headers [ "Content-Disposition" ] ; //attachment
if ( a != null)
{
a = a . Substring ( a . LastIndexOf ( "filename=" ) + 9 ) ;
}
long num1 = Length ; //Response.ContentLength;
bool flag1 = false ;
if ( num1 == - 1 )
{
flag1 = true ;
num1 = 0x10000; //64k
}
byte [] buffer1 = new byte [( int ) num1 ] ;
int p = 0; //本块的位置指针
string s = Response . Headers [ "Content-Range" ] ;
if ( s != null)
{
s = s . Replace ( "bytes " , "" ) ;
s = s . Substring ( 0, s . IndexOf ( "-" )) ;
P = Convert . ToInt32 ( s ) ;
}
int num3 = 0;
Stream S = Response . GetResponseStream () ;
do
{
num2 = S. Read ( buffer1, num3, (( int ) num1 ) - num3 ) ;
num3 += num2;
if ( flag1 && ( num3 == num1 ))
{
num1 += 0x10000;
byte [] buffer2 = new byte [( int ) num1 ] ;
Buffer . BlockCopy ( buffer1, 0, buffer2, 0, num3 ) ;
buffer1 = buffer2;
}
//    lock (_SyncLockObject)
//    {
//     this._bytes += num2;
//    }
if ( num2 > 0 )
{
if ( this . DataReceive != null)
{
byte [] buffer = new byte [ num2 ] ;
Buffer . BlockCopy ( buffer1, p, buffer, 0, buffer . Length ) ;
DownLoadState dls = new DownLoadState ( RequestURL, Response . ResponseUri . AbsolutePath , FileName , a, P , num2, buffer ) ;
DownLoadEventArgs dlea = new DownLoadEventArgs ( dls ) ;
//触发事件
this . OnDataReceive ( dlea ) ;
//System.Threading.Thread.Sleep(100);
}
p += num2; //本块的位置指针
P += num2; //整个文件的位置指针
}
else
{
break ;
}
}
while ( num2 != 0 ) ;
S. Close () ;
S = null ;
if ( flag1 )
{
byte [] buffer3 = new byte [ num3 ] ;
Buffer . BlockCopy ( buffer1, 0, buffer3, 0, num3 ) ;
buffer1 = buffer3;
}
return buffer1;
}
catch ( Exception e )
{
ExceptionActions ea = ExceptionActions .Throw ;
if ( this . ExceptionOccurrs != null)
{
DownLoadState x = new DownLoadState ( RequestURL, Response . ResponseUri . AbsolutePath , FileName , a, P , num2 ) ;
ExceptionEventArgs eea = new ExceptionEventArgs ( e, x ) ;
ExceptionOccurrs ( this , eea ) ;
ea = eea . ExceptionAction;
}
if ( ea == ExceptionActions .Throw)
{
if (!( e is WebException ) && !( e is SecurityException ))
{
throw new WebException ( "net_webclient" , e ) ;
}
throw ;
}
return null ;
}
}
private void OnDataReceive ( DownLoadEventArgs e )
{
//触发数据到达事件
DataReceive ( this , e ) ;
}
public byte [] UploadFile ( string address, string fileName )
{
return this . UploadFile ( address, "POST" , fileName, "file" ) ;
}
public string UploadFileEx ( string address, string method, string fileName, string fieldName )
{
return Encoding . ASCII . GetString ( UploadFile ( address, method, fileName, fieldName )) ;
}
public byte [] UploadFile ( string address, string method, string fileName, string fieldName )
{
byte [] buffer4;
FileStream stream1 = null ;
try
{
fileName = Path . GetFullPath ( fileName ) ;
string text1 = "---------------------" + DateTime . Now . Ticks . ToString ( "x" ) ;
string text2 = "application/octet-stream" ;
stream1 = new FileStream ( fileName, FileMode. Open , FileAccess. Read ) ;
WebRequest request1 = WebRequest . Create ( this . GetUri ( address )) ;
request1 . Credentials = this . m_credentials;
request1 . ContentType = "multipart/form-data; boundary=" + text1;
request1 . Method = method;
string [] textArray1 = new string [ 7 ] { "--" , text1, "\r\nContent-Disposition: form-data; name=\"" + fieldName + "\"; filename=\"" , Path . GetFileName ( fileName ) , "\"\r\nContent-Type: " , text2, "\r\n\r\n" } ;
string text3 = string . Concat ( textArray1 ) ;
byte [] buffer1 = Encoding . UTF8 . GetBytes ( text3 ) ;
byte [] buffer2 = Encoding . ASCII . GetBytes ( "\r\n--" + text1 + "\r\n" ) ;
long num1 = 0x7fffffffffffffff;
try
{
num1 = stream1 . Length ;
request1 . ContentLength = ( num1 + buffer1 . Length ) + buffer2 . Length ;
}
catch
{
}
byte [] buffer3 = new byte [ Math . Min ( 0x2000, ( int ) num1 )] ;
using ( Stream stream2 = request1 . GetRequestStream ())
{
int num2;
stream2 . Write ( buffer1, 0, buffer1 . Length ) ;
do
{
num2 = stream1 . Read ( buffer3, 0, buffer3 . Length ) ;
if ( num2 != 0 )
{
stream2 . Write ( buffer3, 0, num2 ) ;
}
}
while ( num2 != 0 ) ;
stream2 . Write ( buffer2, 0, buffer2 . Length ) ;
}
stream1 . Close () ;
stream1 = null ;
WebResponse response1 = request1 . GetResponse () ;
buffer4 = this . ResponseAsBytes ( response1 ) ;
}
catch ( Exception exception1 )
{
if ( stream1 != null)
{
stream1 . Close () ;
stream1 = null ;
}
if (!( exception1 is WebException ) && !( exception1 is SecurityException ))
{
//throw new WebException(SR.GetString("net_webclient"), exception1);
throw new WebException ( "net_webclient" , exception1 ) ;
}
throw ;
}
return buffer4;
}
private byte [] ResponseAsBytes ( WebResponse response )
{
int num2;
long num1 = response . ContentLength ;
bool flag1 = false ;
if ( num1 == - 1 )
{
flag1 = true ;
num1 = 0x10000;
}
byte [] buffer1 = new byte [( int ) num1 ] ;
Stream stream1 = response . GetResponseStream () ;
int num3 = 0;
do
{
num2 = stream1 . Read ( buffer1, num3, (( int ) num1 ) - num3 ) ;
num3 += num2;
if ( flag1 && ( num3 == num1 ))
{
num1 += 0x10000;
byte [] buffer2 = new byte [( int ) num1 ] ;
Buffer . BlockCopy ( buffer1, 0, buffer2, 0, num3 ) ;
buffer1 = buffer2;
}
}
while ( num2 != 0 ) ;
stream1 . Close () ;
if ( flag1 )
{
byte [] buffer3 = new byte [ num3 ] ;
Buffer . BlockCopy ( buffer1, 0, buffer3, 0, num3 ) ;
buffer1 = buffer3;
}
return buffer1;
}
private NameValueCollection m_requestParameters;
private Uri m_baseAddress;
private ICredentials m_credentials = CredentialCache . DefaultCredentials ;
public ICredentials Credentials
{
get
{
return this . m_credentials;
}
set
{
this . m_credentials = value ;
}
}
public NameValueCollection QueryString
{
get
{
if ( this . m_requestParameters == null)
{
this . m_requestParameters = new NameValueCollection () ;
}
return this . m_requestParameters;
}
set
{
this . m_requestParameters = value ;
}
}
public string BaseAddress
{
get
{
if ( this . m_baseAddress != null)
{
return this . m_baseAddress . ToString () ;
}
return string . Empty ;
}
set
{
if ((value == null) || (value. Length == 0 ))
{
this . m_baseAddress = null ;
}
else
{
try
{
this . m_baseAddress = new Uri (value) ;
}
catch ( Exception exception1 )
{
throw new ArgumentException ( "value" , exception1 ) ;
}
}
}
}
private Uri GetUri ( string path )
{
Uri uri1;
try
{
if ( this . m_baseAddress != null)
{
uri1 = new Uri ( this . m_baseAddress, path ) ;
}
else
{
uri1 = new Uri ( path ) ;
}
if ( this . m_requestParameters == null)
{
return uri1;
}
StringBuilder builder1 = new StringBuilder () ;
string text1 = string . Empty ;
for ( int num1 = 0; num1 < this . m_requestParameters . Count ; num1 ++)
{
builder1 . Append ( text1 + this . m_requestParameters . AllKeys [ num1 ] + "=" + this . m_requestParameters [ num1 ]) ;
text1 = "&" ;
}
UriBuilder builder2 = new UriBuilder ( uri1 ) ;
builder2 . Query = builder1 . ToString () ;
uri1 = builder2 . Uri ;
}
catch ( UriFormatException )
{
uri1 = new Uri ( Path . GetFullPath ( path )) ;
}
return uri1;
}
}
}
/// <summary>
/// 测试类
/// </summary>
class AppTest
{
int _k = 0;
int _K = 0;
static void Main ()
{
AppTest a = new AppTest () ;
Microshaoft . Utils . HttpWebClient x = new Microshaoft . Utils . HttpWebClient () ;
a . _K = 10;
//订阅 DataReceive　事件
x . DataReceive += new Microshaoft . Utils . HttpWebClient . DataReceiveEventHandler ( a . x_DataReceive ) ;
//订阅 ExceptionOccurrs　事件
x . ExceptionOccurrs += new Microshaoft . Utils . HttpWebClient . ExceptionEventHandler ( a . x_ExceptionOccurrs ) ;
x . ThreadProcessEnd += new Microshaoft . Utils . HttpWebClient . ThreadProcessEventHandler ( a . x_ThreadProcessEnd ) ;
string F = "http://localhost/download/phpMyAdmin-2.6.1-pl2.zip" ;
F = "http://down6.flashget.com/flashget182cn.exe" ;
a . _F = F ;
string f = F. Substring (F. LastIndexOf ( "/" ) + 1 ) ;
//(new System.Threading.Thread(new System.Threading.ThreadStart(new ThreadProcessState(F, @"E:\temp\" + f, 10, x).StartThreadProcess))).Start();
x . DownloadFile (F , @ "d:\temp\" + f, a._K);
//  x.DownloadFileChunk(F, @"E:\temp\" + f,15,34556);
System . Console . ReadLine () ;
//  string uploadfile = "e:\\test_local.rar";
//  string str = x.UploadFileEx("http://localhost/phpmyadmin/uploadaction.php", "POST", uploadfile, "file1");
//  System.Console.WriteLine(str);
//  System.Console.ReadLine();
}
string bs = "" ; //用于记录上次的位数
bool b = false ;
private int i = 0;
private static object _SyncLockObject = new object () ;
string _F;
string _f;
private void x_DataReceive ( Microshaoft . Utils . HttpWebClient Sender , Microshaoft . Utils . DownLoadEventArgs e )
{
if (! this . b )
{
lock ( _SyncLockObject )
{
if (! this . b )
{
System . Console . Write ( System . DateTime . Now . ToString () + " 已接收数据:           " ) ;
//System.Console.Write( System.DateTime.Now.ToString() + " 已接收数据:           ");
this . b = true ;
}
}
}
string f = e . DownloadState . FileName ;
if ( e . DownloadState . AttachmentName != null)
f = System .IO. Path . GetDirectoryName ( f ) + @ "\" + e.DownloadState.AttachmentName;
this . _f = f;
using ( System .IO. FileStream sw = new System .IO. FileStream ( f, System .IO.FileMode.OpenOrCreate , System .IO.FileAccess.ReadWrite , System .IO.FileShare.ReadWrite))
{
sw . Position = e . DownloadState . Position ;
sw . Write ( e . DownloadState . Data , 0, e . DownloadState . Data . Length ) ;
sw . Close () ;
}
string s = System . DateTime . Now . ToString () ;
lock ( _SyncLockObject )
{
this . i += e . DownloadState . Data . Length ;
System . Console . Write ( bs + "\b\b\b\b\b\b\b\b\b\b" + i + " / " + Sender . FileLength + " 字节数据 " + s ) ;
//System.Console.Write(bs + i + " 字节数据 " + s);
this . bs = new string ( '\b' , Digits ( i ) + 3 + Digits ( Sender . FileLength ) + s . Length ) ;
}
}
int Digits ( int n ) //数字所占位数
{
n = System . Math . Abs ( n ) ;
n = n / 10;
int i = 1;
while ( n > 0 )
{
n = n / 10;
i ++ ;
}
return i;
}
private void x_ExceptionOccurrs ( Microshaoft . Utils . HttpWebClient Sender , Microshaoft . Utils . ExceptionEventArgs e )
{
System . Console . WriteLine ( e . Exception . Message ) ;
//发生异常重新下载相当于断点续传,你可以自己自行选择处理方式
Microshaoft . Utils . HttpWebClient x = new Microshaoft . Utils . HttpWebClient () ;
x . DownloadFileChunk ( this . _F, this . _f, e . DownloadState . Position , e . DownloadState . Length ) ;
e . ExceptionAction = Microshaoft . Utils . ExceptionActions .Ignore ;
}
private void x_ThreadProcessEnd ( Microshaoft . Utils . HttpWebClient Sender , Microshaoft . Utils . ThreadProcessEventArgs e )
{
//if (e.thread.ThreadState == System.Threading.ThreadState.Stopped)
if ( this . _k ++ == this . _K - 1 )
System . Console . WriteLine ( "\nend" ) ;
}
}