Serial communication component VB (VB.NET) library for serial/usb port programs

Serial communication component VB and VB.NET library (DLL) for serial port (RS-232. RS-422, RS-485) communications. Features of the Windows Serial Communications Library (WSC4VB) include: Uses the standard Windows API to communicate with any device connected to a serial port (scale, modem, fingerprint scanner, printer servers, routers, etc). Includes 34 functions plus modem control, ANSI emulation, ASCII/XMODEM/YMODEM protocols, hardware and software flow control (XON/XOFF, RTS/CTS, DTR/DSR). Includes multiple Visual Basic and .NET example programs. Can be used from GUI mode or console mode programs. State driven Xmodem and Ymodem on multiple ports simultaneously (up to 256 connections). Is port re-entrant. Is fully thread safe. Can send Windows messages on completion of events (incoming character, etc.). Supports virtual serial ports (usb to serial converter, bluetooth serial); is multi-tasking, Supports any baudrate; can set baudrate, parity, stopbits; full buffered data transfer. Includes 16-bit (WSC16.DLL) and 32-bit (WSC32.DLL) versions. Supports all versions Visual Basic (VB 3.0, VB 4.0, VB 5.0, VB 6.0, and VB.NET). Works with PowerBuilder and Visual Basic for Applications (VBA) (e.g. Access, Excel, MS Office). Does not depend on support libraries. Makes calls to Windows API functions only. Can also use with Delphi, Visual C++, C#, VC.NET, PowerBASIC, Visual FoxPro, Visual dBase, Xbase++, and COBOL. Can be used with managed code. Can be ordered with or without source code for the DLL. Free technical support and updates for one year. Complete online and printed documentation. Requires a Windows Visual Basic compiler. Supports Windows 95/98/Me/NT/2000/2003/XP. The evaluation version of WSC4VB is fully functional and can be downloaded from http://www.marshallsoft.com/wsc4vb.htm. For Win/CE libraries, see http://www.marshallsoft.com/wsc4evb.htm