using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication15
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void ctof_Click(object sender, EventArgs e)
        {
            WebService1 t = new WebService1();


            fah.Text = t.CelsiusToFarenheit(
                Double.Parse(celbox.Text)
            ).ToString();


        }

        protected void ctoc_Click(object sender, EventArgs e)
        {
            WebService1 t = new WebService1();


            cel.Text = t.FarenheitToCelsius(
                Double.Parse(fahbox.Text)
            ).ToString();

        }
    }
}

#<asp:TextBox ID="celbox" runat="server"></asp:TextBox></p>