How to send SMS using ASP.NET through HTTP [c#, from website]

protected void buttonSendOnClick(object sender, EventArgs e)
//are required fields filled in:
if (textboxRecipient.Text == “”)
textboxError.Text += “Recipient(s) field must not be empty!\n”;
textboxError.Visible = true;

//we creating the necessary URL string:
string ozSURL = “”; //where the SMS Gateway is running
string ozSPort = “9501”; //port number where the SMS Gateway is listening
string ozUser = HttpUtility.UrlEncode(“admin”); //username for successful login
string ozPassw = HttpUtility.UrlEncode(“abc123”); //user’s password
string ozMessageType = “SMS:TEXT”; //type of message
string ozRecipients = HttpUtility.UrlEncode(textboxRecipient.Text); //who will get the message
string ozMessageData = HttpUtility.UrlEncode(textboxMessage.Text); //body of message

string createdURL = ozSURL + “:” + ozSPort + “/httpapi” +
“?action=sendMessage” +
“&username=” + ozUser +
“&password=” + ozPassw +
“&messageType=” + ozMessageType +
“&recipient=” + ozRecipients +
“&messageData=” + ozMessageData;

//Create the request and send data to the SMS Gateway Server by HTTP connection
HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(createdURL);

//Get response from the SMS Gateway Server and read the answer
HttpWebResponse myResp = (HttpWebResponse)myReq.GetResponse();
System.IO.StreamReader respStreamReader = new System.IO.StreamReader(myResp.GetResponseStream());
string responseString = respStreamReader.ReadToEnd();

//inform the user
textboxError.Text = responseString;
textboxError.Visible = true;
catch (Exception)
//if sending request or getting response is not successful the SMS Gateway Server may do not run
textboxError.Text = “The SMS Gateway Server is not running!”;
textboxError.Visible = true;



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