AT command for sending sms through code

Question

Hello

Actually i am doing a computer program in C# to send and receive SMS through gsm mode(serial port)
i am using the below code

port = new SerialPort(cmbport.Text, 115200, Parity.None, 8, StopBits.One);
port.Open();
port.WriteLine("AT\r");

after opening the port the program is halt, it does not execute the api
writeline

if any body have idea please suggest me
waiting your reply
thanks
sadaba lam

Vulpes · Answer

This article may help: http://www.codeproject.com/Articles/38705/Send-and-Read-SMS-through-a-GSM-Modem-using-AT-Com

mamta rupareliya · Answer

How to send SMS Using AT Command ASP.NET Application

Sam Hobbs · Answer

That is a very fast baud rate; are you sure the phone can handle 115000 characters per second?

Vulpes · Answer

I'd try using port.Write(AT) rather than port.WriteLine(AT) as the latter will send an extra 
 on Windows.