Set up, gives full control over your serial port with just a few lines of code.
Edit By BS Editor: Simplify RS-232 serial port communications in any Visual Basic.NET, C#, C++, or other .NET project with PortController.NET.

PortController.NET is a powerful .NET component that takes only seconds to set up and gives you full control over your serial port with just a few lines of code. With PortController.NET, you can Create software that interacts with laboratory instruments, navigational devices, medical Equipment, and more in minutes.

PortController.NET:

Works with all types of serial ports, including USB converters, Bluetooth, IR, or any virtual port
Can control an unlimited number of ports simultaneously, from COM1 to COM9999
Performs multithreaded reads and writes with one simple function call
Supports reading and writing of binary data
Supports XMODEM, XMODEM-CRC, XMODEM-1K, YMODEM, and ZMODEM file transfers
Notifies your application when data arrives or events occur on the port
Lets you set baud rate, parity, data bits, and stop bits parameters
Gives you full control of status line and handshaking states
Is a native .NET managed component (both Visual Studio 2005 / .NET CLR 2.0 and Visual Studio 2003 / .NET CLR 1.1)
Comes with 12 example applications (Visual Basic, C#, and C++)
Can be redistributed to your customers royalty-free as part of your application you can free download PortController.NET 2.1 now.