Send SMS using Skype4COM for C# Detailed description: http://ch3cooh.jp/other/skype-api/send-msm-using-skypeapi/

gistfile1.txt

using System;
using System.Diagnostics;
using System.Windows.Forms;

namespace SkypeAPISample
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            var sendNumber = "+81-80-xxxx-yyyy";
            var msgBody = "test message";

            SendSMSMessage(sendNumber, msgBody);
        }

        /// <summary>
        /// SMSを送信する
        /// </summary>
        /// <param name="number"></param>
        /// <param name="body"></param>
        void SendSMSMessage(string number, string body)
        {
            try
            {
                var skype = new SKYPE4COMLib.Skype();
                skype.Timeout = 120 * 1000; // タイムアウト時間を2分にする (単位:ミリ秒)

                var smsType = SKYPE4COMLib.TSmsMessageType.smsMessageTypeOutgoing;
                var message = skype.CreateSms(smsType, number);
                message.Body = body;
                message.Send();
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex);
            }
        }

    }
}