Implement SMS sending functionality in ASP.NET C# web application

Question

I have a requirement to send SMS to users from my ASP.NET web application. First I want to know whether any free service is available to do this? When I googled I got lots of links (even from stackoverflow) related to sending sms via way2sms.com 160by2 and such sort of things but unfortunately not even a single thing worked. I tried with the SmsClient.dll and ended up with the same story again.

I would like to get a very reliable reply from someone who has implemented the same and how it was done since now itself I have spend a lot of time googling and trying some sample codes got from the internet.

Answer 1

I had implemented a project where SMS text was generated after user selects some text and forwarded it to mobile numbers fetched from database.

The SMS gateway provider gave us a URL in which the SMS text and the mobile numbers were embedded as parameter values , something like below

string url =@"http://10.10.10.10/id=ourId&password=xyz&message="+smsText+"&mobileNum="+num[i];

This string string contained url which was called using WebClient class

using (WebClient client = new WebClient())
{
client.DownloadString(url);   
}