plz help solve this error in age calculation apps using webservice consume

namespace Age_Calculator_Apps
{
    public partial class Form1 : Form
    {
        //ServiceReference1.Age_calculationSoapClient obj = new ServiceReference1.Age_calculationSoapClient();
        localhost.Age_calculation obj = new localhost.Age_calculation();
        int day, month, year;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {

            day = Convert.ToInt32(textBox1.Text.ToString());
            month = Convert.ToInt32(textBox2.Text.ToString());
            year= Convert.ToInt32(textBox3.Text.ToString());

            int days = obj.converttodaysweb(day,  year, month);

            MessageBox.Show("you are"+ " "+ days +""+ "days year old");
        }
    }
}