How to communicate serial port using c#.net

[volkan]

I am a bit new in C# and havent seen any class that communicates with serial port. Do you know how can i make it or do you have any library codes for it.

 

[asic1984]

hi

there is an activex control called mscomm32 that u can use easily in your application

or if u are using visual studio.net 2005 u will find a library called System.io.ports as what i think

 

[neuralc]

Hi

Using .NET Framework v2.0: **broken link removed**

Using an assembly in .NET Framework 1.1: https://sourceforge.net/projects/serialportnet


HH

NeuralC

 

[muddasserniaz]

https://www.devhood.com/tutorials/tutorial_details.aspx?tutorial_id=320

 

[mertkan65]

I have the same problem. I try to control modem trough RS232 with a software running in windows. I have planned to use C++ how can I do it? Also I need an user interface.

 

[Jayson]

I have the same problem. I try to control modem trough RS232 with a software running in windows. I have planned to use C++ how can I do it? Also I need an user interface.

Here's some code that will help you get started using the Win32 API. Even though this is C code, it will work in a C++ program too.

#include <windows.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
   DCB dcb;
   HANDLE hCom;
   BOOL fSuccess;
   char *pcCommPort = "COM2";

   hCom = CreateFile( pcCommPort,
                    GENERIC_READ | GENERIC_WRITE,
                    0,    // must be opened with exclusive-access
                    NULL, // no security attributes
                    OPEN_EXISTING, // must use OPEN_EXISTING
                    0,    // not overlapped I/O
                    NULL  // hTemplate must be NULL for comm devices
                    );

   if (hCom == INVALID_HANDLE_VALUE) 
   {
       // Handle the error.
       printf ("CreateFile failed with error %d.\n", GetLastError());
       return (1);
   }

   // Build on the current configuration, and skip setting the size
   // of the input and output buffers with SetupComm.

   fSuccess = GetCommState(hCom, &dcb);

   if (!fSuccess) 
   {
      // Handle the error.
      printf ("GetCommState failed with error %d.\n", GetLastError());
      return (2);
   }

   // Fill in DCB: 57,600 bps, 8 data bits, no parity, and 1 stop bit.

   dcb.BaudRate = CBR_57600;     // set the baud rate
   dcb.ByteSize = 8;             // data size, xmit, and rcv
   dcb.Parity = NOPARITY;        // no parity bit
   dcb.StopBits = ONESTOPBIT;    // one stop bit

   fSuccess = SetCommState(hCom, &dcb);

   if (!fSuccess) 
   {
      // Handle the error.
      printf ("SetCommState failed with error %d.\n", GetLastError());
      return (3);
   }

   printf ("Serial port %s successfully reconfigured.\n", pcCommPort);
   return (0);
}

just remember that before your program exits use the

BOOL CloseHandle(
  HANDLE hObject
);

otherwise you might block access to the serial port until you reboot your computer.

- Jayson