110 重新启动标记应答。
120 服务在多久时间内ready。
125 数据链路埠开启，准备传送。
150 文件状态正常，开启数据连接端口。
200 命令执行成功。
202 命令执行失败。
211 系统状态或是系统求助响应。
212 目录的状态。
213 文件的状态。
214 求助的讯息。
215 名称系统类型。
220 新的联机服务ready。
221 服务的控制连接埠关闭，可以注销。
225 数据连结开启，但无传输动作。
226 关闭数据连接端口，请求的文件操作成功。
227 进入passive mode。
230 使用者登入。
250 请求的文件操作完成。
257 显示目前的路径名称。
331 用户名称正确，需要密码。
332 登入时需要账号信息。
350 请求的操作需要进一部的命令。
421 无法提供服务，关闭控制连结。
425 无法开启数据链路。
426 关闭联机，终止传输。
450 请求的操作未执行。
451 命令终止：有本地的错误。
452 未执行命令：磁盘空间不足。
500 格式错误，无法识别命令。
501 参数语法错误。
502 命令执行失败。
503 命令顺序错误。
504 命令所接的参数不正确。
530 未登入。
532 储存文件需要账户登入。
550 未执行请求的操作。
551 请求的命令终止，类
1 public class FtpClient 2 { 3 public static object obj = new object(); 4 5 #region 构造函数 6 /// <summary> 7 /// 缺省构造函数 8 /// </summary> 9 public FtpClient() 10 { 11 strRemoteHost = "10.132.26.86"; 12 strRemotePath = "00555"; 13 strRemoteUser = "uname"; 14 strRemotePass = "upass"; 15 strRemotePort = 21; 16 bConnected = false; 17 } 18 19 /// <summary> 20 /// 构造函数 21 /// </summary> 22 public FtpClient(string remoteHost, string remotePath, string remoteUser, string remotePass, int remotePort) 23 { 24 strRemoteHost = remoteHost; 25 strRemotePath = remotePath; 26 strRemoteUser = remoteUser; 27 strRemotePass = remotePass; 28 strRemotePort = remotePort; 29 Connect(); 30 } 31 32 #endregion 33 34 #region 字段 35 private int strRemotePort; 36 private Boolean bConnected; 37 private string strRemoteHost; 38 private string strRemotePass; 39 private string strRemoteUser; 40 private string strRemotePath; 41 42 /// <summary> 43 /// 服务器返回的应答信息(包含应答码) 44 /// </summary> 45 private string strMsg; 46 /// <summary> 47 /// 服务器返回的应答信息(包含应答码) 48 /// </summary> 49 private string strReply; 50 /// <summary> 51 /// 服务器返回的应答码 52 /// </summary> 53 private int iReplyCode; 54 /// <summary> 55 /// 进行控制连接的socket 56 /// </summary> 57 private Socket socketControl; 58 /// <summary> 59 /// 传输模式 60 /// </summary> 61 private TransferType trType; 62 /// <summary> 63 /// 接收和发送数据的缓冲区 64 /// </summary> 65 private static int BLOCK_SIZE = 512; 66 /// <summary> 67 /// 编码方式 68 /// </summary> 69 Encoding ASCII = Encoding.ASCII; 70 /// <summary> 71 /// 字节数组 72 /// </summary> 73 Byte[] buffer = new Byte[BLOCK_SIZE]; 74 #endregion 75 76 #region 属性 77 /// <summary> 78 /// FTP服务器IP地址 79 /// </summary> 80 public string RemoteHost 81 { 82 get 83 { 84 return strRemoteHost; 85 } 86 set 87 { 88 strRemoteHost = value; 89 } 90 } 91 92 /// <summary> 93 /// FTP服务器端口 94 /// </summary> 95 public int RemotePort 96 { 97 get 98 { 99 return strRemotePort; 100 } 101 set 102 { 103 strRemotePort = value; 104 } 105 } 106 107 /// <summary> 108 /// 当前服务器目录 109 /// </summary> 110 public string RemotePath 111 { 112 get 113 { 114 return strRemotePath; 115 } 116 set 117 { 118 strRemotePath = value; 119 } 120 } 121 122 /// <summary> 123 /// 登录用户账号 124 /// </summary> 125 public string RemoteUser 126 { 127 set 128 { 129 strRemoteUser = value; 130 } 131 } 132 133 /// <summary> 134 /// 用户登录密码 135 /// </summary> 136 public string RemotePass 137 { 138 set 139 { 140 strRemotePass = value; 141 } 142 } 143 144 /// <summary> 145 /// 是否登录 146 /// </summary> 147 public bool Connected 148 { 149 get 150 { 151 return bConnected; 152 } 153 } 154 #endregion 155 156 #region 链接 157 /// <summary> 158 /// 建立连接 159 /// </summary> 160 public void Connect() 161 { 162 lock (obj) 163 { 164 socketControl = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 165 IPEndPoint ep = new IPEndPoint(IPAddress.Parse(RemoteHost), strRemotePort); 166 try 167 { 168 socketControl.Connect(ep); 169 } 170 catch (Exception) 171 { 172 throw new IOException("不能连接ftp服务器"); 173 } 174 } 175 ReadReply(); 176 if (iReplyCode != 220) 177 { 178 DisConnect(); 179 throw new IOException(strReply.Substring(4)); 180 } 181 SendCommand("USER " + strRemoteUser); 182 if (!(iReplyCode == 331 || iReplyCode == 230)) 183 { 184 CloseSocketConnect(); 185 throw new IOException(strReply.Substring(4)); 186 } 187 if (iReplyCode != 230) 188 { 189 SendCommand("PASS " + strRemotePass); 190 if (!(iReplyCode == 230 || iReplyCode == 202)) 191 { 192 CloseSocketConnect(); 193 throw new IOException(strReply.Substring(4)); 194 } 195 } 196 bConnected = true; 197 ChDir(strRemotePath); 198 } 199 200 /// <summary> 201 /// 关闭连接 202 /// </summary> 203 public void DisConnect() 204 { 205 if (socketControl != null) 206 { 207 SendCommand("QUIT"); 208 } 209 CloseSocketConnect(); 210 } 211 #endregion 212 213 #region 传输模式 214 /// <summary> 215 /// 传输模式:二进制类型、ASCII类型 216 /// </summary> 217 public enum TransferType { Binary, ASCII }; 218 219 /// <summary> 220 /// 设置传输模式 221 /// </summary> 222 /// <param name="ttType">传输模式</param> 223 public void SetTransferType(TransferType ttType) 224 { 225 if (ttType == TransferType.Binary) 226 { 227 SendCommand("TYPE I");//binary类型传输 228 } 229 else 230 { 231 SendCommand("TYPE A");//ASCII类型传输 232 } 233 if (iReplyCode != 200) 234 { 235 throw new IOException(strReply.Substring(4)); 236 } 237 else 238 { 239 trType = ttType; 240 } 241 } 242 243 /// <summary> 244 /// 获得传输模式 245 /// </summary> 246 /// <returns>传输模式</returns> 247 public TransferType GetTransferType() 248 { 249 return trType; 250 } 251 #endregion 252 253 #region 文件操作 254 /// <summary> 255 /// 获得文件列表 256 /// </summary> 257 /// <param name="strMask">文件名的匹配字符串</param> 258 public string[] Dir(string strMask) 259 { 260 if (!bConnected) 261 { 262 Connect(); 263 } 264 Socket socketData = CreateDataSocket(); 265 SendCommand("NLST " + strMask); 266 if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226)) 267 { 268 throw new IOException(strReply.Substring(4)); 269 } 270 strMsg = ""; 271 Thread.Sleep(2000); 272 while (true) 273 { 274 int iBytes = socketData.Receive(buffer, buffer.Length, 0); 275 strMsg += ASCII.GetString(buffer, 0, iBytes); 276 if (iBytes < buffer.Length) 277 { 278 break; 279 } 280 } 281 char[] seperator = { ' ' }; 282 string[] strsFileList = strMsg.Split(seperator); 283 socketData.Close(); //数据socket关闭时也会有返回码 284 if (iReplyCode != 226) 285 { 286 ReadReply(); 287 if (iReplyCode != 226) 288 { 289 290 throw new IOException(strReply.Substring(4)); 291 } 292 } 293 return strsFileList; 294 } 295 296 public void newPutByGuid(string strFileName, string strGuid) 297 { 298 if (!bConnected) 299 { 300 Connect(); 301 } 302 string str = strFileName.Substring(0, strFileName.LastIndexOf("\")); 303 string strTypeName = strFileName.Substring(strFileName.LastIndexOf(".")); 304 strGuid = str + "\" + strGuid; 305 Socket socketData = CreateDataSocket(); 306 SendCommand("STOR " + Path.GetFileName(strGuid)); 307 if (!(iReplyCode == 125 || iReplyCode == 150)) 308 { 309 throw new IOException(strReply.Substring(4)); 310 } 311 FileStream input = new FileStream(strGuid, FileMode.Open); 312 input.Flush(); 313 int iBytes = 0; 314 while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0) 315 { 316 socketData.Send(buffer, iBytes, 0); 317 } 318 input.Close(); 319 if (socketData.Connected) 320 { 321 socketData.Close(); 322 } 323 if (!(iReplyCode == 226 || iReplyCode == 250)) 324 { 325 ReadReply(); 326 if (!(iReplyCode == 226 || iReplyCode == 250)) 327 { 328 throw new IOException(strReply.Substring(4)); 329 } 330 } 331 } 332 333 /// <summary> 334 /// 获取文件大小 335 /// </summary> 336 /// <param name="strFileName">文件名</param> 337 /// <returns>文件大小</returns> 338 public long GetFileSize(string strFileName) 339 { 340 if (!bConnected) 341 { 342 Connect(); 343 } 344 SendCommand("SIZE " + Path.GetFileName(strFileName)); 345 long lSize = 0; 346 if (iReplyCode == 213) 347 { 348 lSize = Int64.Parse(strReply.Substring(4)); 349 } 350 else 351 { 352 throw new IOException(strReply.Substring(4)); 353 } 354 return lSize; 355 } 356 357 358 /// <summary> 359 /// 获取文件信息 360 /// </summary> 361 /// <param name="strFileName">文件名</param> 362 /// <returns>文件大小</returns> 363 public string GetFileInfo(string strFileName) 364 { 365 if (!bConnected) 366 { 367 Connect(); 368 } 369 Socket socketData = CreateDataSocket(); 370 SendCommand("LIST " + strFileName); 371 string strResult = ""; 372 if (!(iReplyCode == 150 || iReplyCode == 125 373 || iReplyCode == 226 || iReplyCode == 250)) 374 { 375 throw new IOException(strReply.Substring(4)); 376 } 377 byte[] b = new byte[512]; 378 MemoryStream ms = new MemoryStream(); 379 380 while (true) 381 { 382 int iBytes = socketData.Receive(b, b.Length, 0); 383 ms.Write(b, 0, iBytes); 384 if (iBytes <= 0) 385 { 386 387 break; 388 } 389 } 390 byte[] bt = ms.GetBuffer(); 391 strResult = System.Text.Encoding.ASCII.GetString(bt); 392 ms.Close(); 393 return strResult; 394 } 395 396 /// <summary> 397 /// 删除 398 /// </summary> 399 /// <param name="strFileName">待删除文件名</param> 400 public void Delete(string strFileName) 401 { 402 if (!bConnected) 403 { 404 Connect(); 405 } 406 SendCommand("DELE " + strFileName); 407 if (iReplyCode != 250) 408 { 409 throw new IOException(strReply.Substring(4)); 410 } 411 } 412 413 /// <summary> 414 /// 重命名(如果新文件名与已有文件重名,将覆盖已有文件) 415 /// </summary> 416 /// <param name="strOldFileName">旧文件名</param> 417 /// <param name="strNewFileName">新文件名</param> 418 public void Rename(string strOldFileName, string strNewFileName) 419 { 420 if (!bConnected) 421 { 422 Connect(); 423 } 424 SendCommand("RNFR " + strOldFileName); 425 if (iReplyCode != 350) 426 { 427 throw new IOException(strReply.Substring(4)); 428 } 429 // 如果新文件名与原有文件重名,将覆盖原有文件 430 SendCommand("RNTO " + strNewFileName); 431 if (iReplyCode != 250) 432 { 433 throw new IOException(strReply.Substring(4)); 434 } 435 } 436 #endregion 437 438 #region 上传和下载 439 /// <summary> 440 /// 下载一批文件 441 /// </summary> 442 /// <param name="strFileNameMask">文件名的匹配字符串</param> 443 /// <param name="strFolder">本地目录(不得以结束)</param> 444 public void Get(string strFileNameMask, string strFolder) 445 { 446 if (!bConnected) 447 { 448 Connect(); 449 } 450 string[] strFiles = Dir(strFileNameMask); 451 foreach (string strFile in strFiles) 452 { 453 if (!strFile.Equals(""))//一般来说strFiles的最后一个元素可能是空字符串 454 { 455 Get(strFile, strFolder, strFile); 456 } 457 } 458 } 459 460 /// <summary> 461 /// 下载一个文件 462 /// </summary> 463 /// <param name="strRemoteFileName">要下载的文件名</param> 464 /// <param name="strFolder">本地目录(不得以结束)</param> 465 /// <param name="strLocalFileName">保存在本地时的文件名</param> 466 public void Get(string strRemoteFileName, string strFolder, string strLocalFileName) 467 { 468 Socket socketData = CreateDataSocket(); 469 try 470 { 471 if (!bConnected) 472 { 473 Connect(); 474 } 475 SetTransferType(TransferType.Binary); 476 if (strLocalFileName.Equals("")) 477 { 478 strLocalFileName = strRemoteFileName; 479 } 480 SendCommand("RETR " + strRemoteFileName); 481 if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250)) 482 { 483 throw new IOException(strReply.Substring(4)); 484 } 485 FileStream output = new FileStream(strFolder + "\" + strLocalFileName, FileMode.Create); 486 while (true) 487 { 488 int iBytes = socketData.Receive(buffer, buffer.Length, 0); 489 output.Write(buffer, 0, iBytes); 490 if (iBytes <= 0) 491 { 492 break; 493 } 494 } 495 output.Close(); 496 if (socketData.Connected) 497 { 498 socketData.Close(); 499 } 500 if (!(iReplyCode == 226 || iReplyCode == 250)) 501 { 502 ReadReply(); 503 if (!(iReplyCode == 226 || iReplyCode == 250)) 504 { 505 throw new IOException(strReply.Substring(4)); 506 } 507 } 508 } 509 catch 510 { 511 socketData.Close(); 512 socketData = null; 513 socketControl.Close(); 514 bConnected = false; 515 socketControl = null; 516 } 517 } 518 519 /// <summary> 520 /// 下载一个文件 521 /// </summary> 522 /// <param name="strRemoteFileName">要下载的文件名</param> 523 /// <param name="strFolder">本地目录(不得以结束)</param> 524 /// <param name="strLocalFileName">保存在本地时的文件名</param> 525 public void GetNoBinary(string strRemoteFileName, string strFolder, string strLocalFileName) 526 { 527 if (!bConnected) 528 { 529 Connect(); 530 } 531 532 if (strLocalFileName.Equals("")) 533 { 534 strLocalFileName = strRemoteFileName; 535 } 536 Socket socketData = CreateDataSocket(); 537 SendCommand("RETR " + strRemoteFileName); 538 if (!(iReplyCode == 150 || iReplyCode == 125 || iReplyCode == 226 || iReplyCode == 250)) 539 { 540 throw new IOException(strReply.Substring(4)); 541 } 542 FileStream output = new FileStream(strFolder + "\" + strLocalFileName, FileMode.Create); 543 while (true) 544 { 545 int iBytes = socketData.Receive(buffer, buffer.Length, 0); 546 output.Write(buffer, 0, iBytes); 547 if (iBytes <= 0) 548 { 549 break; 550 } 551 } 552 output.Close(); 553 if (socketData.Connected) 554 { 555 socketData.Close(); 556 } 557 if (!(iReplyCode == 226 || iReplyCode == 250)) 558 { 559 ReadReply(); 560 if (!(iReplyCode == 226 || iReplyCode == 250)) 561 { 562 throw new IOException(strReply.Substring(4)); 563 } 564 } 565 } 566 567 /// <summary> 568 /// 上传一批文件 569 /// </summary> 570 /// <param name="strFolder">本地目录(不得以结束)</param> 571 /// <param name="strFileNameMask">文件名匹配字符(可以包含*和?)</param> 572 public void Put(string strFolder, string strFileNameMask) 573 { 574 string[] strFiles = Directory.GetFiles(strFolder, strFileNameMask); 575 foreach (string strFile in strFiles) 576 { 577 Put(strFile); 578 } 579 } 580 581 /// <summary> 582 /// 上传一个文件 583 /// </summary> 584 /// <param name="strFileName">本地文件名</param> 585 public void Put(string strFileName) 586 { 587 if (!bConnected) 588 { 589 Connect(); 590 } 591 Socket socketData = CreateDataSocket(); 592 if (Path.GetExtension(strFileName) == "") 593 SendCommand("STOR " + Path.GetFileNameWithoutExtension(strFileName)); 594 else 595 SendCommand("STOR " + Path.GetFileName(strFileName)); 596 597 if (!(iReplyCode == 125 || iReplyCode == 150)) 598 { 599 throw new IOException(strReply.Substring(4)); 600 } 601 602 FileStream input = new FileStream(strFileName, FileMode.Open); 603 int iBytes = 0; 604 while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0) 605 { 606 socketData.Send(buffer, iBytes, 0); 607 } 608 input.Close(); 609 if (socketData.Connected) 610 { 611 socketData.Close(); 612 } 613 if (!(iReplyCode == 226 || iReplyCode == 250 || iReplyCode == 200)) 614 { 615 ReadReply(); 616 if (!(iReplyCode == 226 || iReplyCode == 250 || iReplyCode == 200)) 617 { 618 throw new IOException(strReply.Substring(4)); 619 } 620 } 621 } 622 623 624 /// <summary> 625 /// 上传一个文件 626 /// </summary> 627 /// <param name="strFileName">本地文件名</param> 628 public void PutByGuid(string strFileName, string strGuid) 629 { 630 if (!bConnected) 631 { 632 Connect(); 633 } 634 string str = strFileName.Substring(0, strFileName.LastIndexOf("\")); 635 string strTypeName = strFileName.Substring(strFileName.LastIndexOf(".")); 636 strGuid = str + "\" + strGuid; 637 System.IO.File.Copy(strFileName, strGuid); 638 System.IO.File.SetAttributes(strGuid, System.IO.FileAttributes.Normal); 639 Socket socketData = CreateDataSocket(); 640 SendCommand("STOR " + Path.GetFileName(strGuid)); 641 if (!(iReplyCode == 125 || iReplyCode == 150)) 642 { 643 throw new IOException(strReply.Substring(4)); 644 } 645 FileStream input = new FileStream(strGuid, FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read); 646 int iBytes = 0; 647 while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0) 648 { 649 socketData.Send(buffer, iBytes, 0); 650 } 651 input.Close(); 652 File.Delete(strGuid); 653 if (socketData.Connected) 654 { 655 socketData.Close(); 656 } 657 if (!(iReplyCode == 226 || iReplyCode == 250)) 658 { 659 ReadReply(); 660 if (!(iReplyCode == 226 || iReplyCode == 250)) 661 { 662 throw new IOException(strReply.Substring(4)); 663 } 664 } 665 } 666 #endregion 667 668 #region 目录操作 669 /// <summary> 670 /// 创建目录 671 /// </summary> 672 /// <param name="strDirName">目录名</param> 673 public void MkDir(string strDirName) 674 { 675 if (!bConnected) 676 { 677 Connect(); 678 } 679 SendCommand("MKD " + strDirName); 680 if (iReplyCode != 257) 681 { 682 throw new IOException(strReply.Substring(4)); 683 } 684 } 685 686 /// <summary> 687 /// 删除目录 688 /// </summary> 689 /// <param name="strDirName">目录名</param> 690 public void RmDir(string strDirName) 691 { 692 if (!bConnected) 693 { 694 Connect(); 695 } 696 SendCommand("RMD " + strDirName); 697 if (iReplyCode != 250) 698 { 699 throw new IOException(strReply.Substring(4)); 700 } 701 } 702 703 /// <summary> 704 /// 改变目录 705 /// </summary> 706 /// <param name="strDirName">新的工作目录名</param> 707 public void ChDir(string strDirName) 708 { 709 if (strDirName.Equals(".") || strDirName.Equals("")) 710 { 711 return; 712 } 713 if (!bConnected) 714 { 715 Connect(); 716 } 717 SendCommand("CWD " + strDirName); 718 if (iReplyCode != 250) 719 { 720 throw new IOException(strReply.Substring(4)); 721 } 722 this.strRemotePath = strDirName; 723 } 724 #endregion 725 726 #region 内部函数 727 /// <summary> 728 /// 将一行应答字符串记录在strReply和strMsg,应答码记录在iReplyCode 729 /// </summary> 730 private void ReadReply() 731 { 732 strMsg = ""; 733 strReply = ReadLine(); 734 iReplyCode = Int32.Parse(strReply.Substring(0, 3)); 735 } 736 737 /// <summary> 738 /// 建立进行数据连接的socket 739 /// </summary> 740 /// <returns>数据连接socket</returns> 741 private Socket CreateDataSocket() 742 { 743 SendCommand("PASV"); 744 if (iReplyCode != 227) 745 { 746 throw new IOException(strReply.Substring(4)); 747 } 748 int index1 = strReply.IndexOf('('); 749 int index2 = strReply.IndexOf(')'); 750 string ipData = strReply.Substring(index1 + 1, index2 - index1 - 1); 751 int[] parts = new int[6]; 752 int len = ipData.Length; 753 int partCount = 0; 754 string buf = ""; 755 for (int i = 0; i < len && partCount <= 6; i++) 756 { 757 char ch = Char.Parse(ipData.Substring(i, 1)); 758 if (Char.IsDigit(ch)) 759 buf += ch; 760 else if (ch != ',') 761 { 762 throw new IOException("Malformed PASV strReply: " + strReply); 763 } 764 if (ch == ',' || i + 1 == len) 765 { 766 try 767 { 768 parts[partCount++] = Int32.Parse(buf); 769 buf = ""; 770 } 771 catch (Exception) 772 { 773 throw new IOException("Malformed PASV strReply: " + strReply); 774 } 775 } 776 } 777 string ipAddress = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3]; 778 int port = (parts[4] << 8) + parts[5]; 779 Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 780 IPEndPoint ep = new IPEndPoint(IPAddress.Parse(ipAddress), port); 781 try 782 { 783 s.Connect(ep); 784 } 785 catch (Exception) 786 { 787 throw new IOException("无法连接ftp服务器"); 788 } 789 return s; 790 } 791 792 /// <summary> 793 /// 关闭socket连接(用于登录以前) 794 /// </summary> 795 private void CloseSocketConnect() 796 { 797 lock (obj) 798 { 799 if (socketControl != null) 800 { 801 socketControl.Close(); 802 socketControl = null; 803 } 804 bConnected = false; 805 } 806 } 807 808 /// <summary> 809 /// 读取Socket返回的所有字符串 810 /// </summary> 811 /// <returns>包含应答码的字符串行</returns> 812 private string ReadLine() 813 { 814 lock (obj) 815 { 816 while (true) 817 { 818 int iBytes = socketControl.Receive(buffer, buffer.Length, 0); 819 strMsg += ASCII.GetString(buffer, 0, iBytes); 820 if (iBytes < buffer.Length) 821 { 822 break; 823 } 824 } 825 } 826 char[] seperator = { ' ' }; 827 string[] mess = strMsg.Split(seperator); 828 if (strMsg.Length > 2) 829 { 830 strMsg = mess[mess.Length - 2]; 831 } 832 else 833 { 834 strMsg = mess[0]; 835 } 836 if (!strMsg.Substring(3, 1).Equals(" ")) //返回字符串正确的是以应答码(如220开头,后面接一空格,再接问候字符串) 837 { 838 return ReadLine(); 839 } 840 return strMsg; 841 } 842 843 /// <summary> 844 /// 发送命令并获取应答码和最后一行应答字符串 845 /// </summary> 846 /// <param name="strCommand">命令</param> 847 public void SendCommand(String strCommand) 848 { 849 lock (obj) 850 { 851 Byte[] cmdBytes = Encoding.ASCII.GetBytes((strCommand + " ").ToCharArray()); 852 socketControl.Send(cmdBytes, cmdBytes.Length, 0); 853 Thread.Sleep(500); 854 ReadReply(); 855 } 856 } 857 #endregion 858 }