.NET SMS Gateway Api Post cURL

SMS Gateway

 public void SendSMS(string smsText, string sendTo) 
        { 
            #region Variables 
            string userId = ConfigurationManager.AppSettings["SMSGatewayUserID"]; 
            string pwd = ConfigurationManager.AppSettings["SMSGatewayPassword"]; 
            string postURL = ConfigurationManager.AppSettings["SMSGatewayPostURL"]; 
             
            StringBuilder postData = new StringBuilder(); 
            string responseMessage = string.Empty; 
            HttpWebRequest request = null; 
            #endregion 
 
            try 
            { 
                // Prepare POST data  
                postData.Append("action=send"); 
                postData.Append("&username=" + userId); 
                postData.Append("&passphrase=" + pwd); 
                postData.Append("&phone=" + sendTo); 
                postData.Append("&message=" + smsText); 
                byte[] data = new System.Text.ASCIIEncoding().GetBytes(postData.ToString()); 
 
                // Prepare web request 
                request = (HttpWebRequest)WebRequest.Create(postURL); 
                request.Method = "POST"; 
                request.ContentType = "application/x-www-form-urlencoded"; 
                request.ContentLength = data.Length; 
 
                // Write data to stream 
                using (Stream newStream = request.GetRequestStream()) 
                { 
                    newStream.Write(data, 0, data.Length); 
                } 
 
                // Send the request and get a response 
                using(HttpWebResponse  response = (HttpWebResponse)request.GetResponse()) 
                { 
                    // Read the response 
                    using (StreamReader srResponse = new StreamReader(response.GetResponseStream())) 
                    { 
                        responseMessage = srResponse.ReadToEnd(); 
                    } 
 
                    // Logic to interpret response from your gateway goes here 
                    Response.Write(String.Format("Response from gateway: {0}", responseMessage));  
                } 
            } 
            catch (Exception objException) 
            { 
                Response.Write(objException.ToString()); 
            }             
        }