I ve developed a c# winforms application for sending sms by using this article of Sending sms using GSM It works pretty well... Now i want to send sms using GSM communication (ie) a mobile phone connected to PC and i have detect it and send sms using it in asp.net.....
Is it possible Connecting and sending message through GSM modem using asp.net?
There should be no difference if your app is a regular console/winforms app or whether it's an ASP.NET app.
You would just want to be a bit more security-conscious if anyone on the internet is able to connect to your website and send messages...
Of course you can! The only point is that, as ASP.NET is a server side programming, the GSM modem will have to be connected to the server running the app. Even, your already developed code can be reused. Put that code as an assembly with public interface to get the functionalities. Include it in the ASP.NET app and you can send SMS.
Yes. You could create a Windows service that contains the logic for accessing the GSM modem and sending SMS messages. This service can then be access from your ASP.NET web application.
There are lots of articles out there on running a WCF service as a Windows service, here's one on MSDN, Hosting and Consuming WCF Services.
But on second thought, setting up a service may be overkill here. You could use your library from within your app just as fine.
You can do it as mentioned by Kangkan in his answer. You will need to connect your modem to the server which is less feasible and very much less recommended to do so. The best option you can have is to subscribe to a third-party SMS gateway and send SMS through their HTTP apis. There are many such providers available that provide this kindaa service. Just google them and you'll find the one that best suits your needs.