>>88
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

namespace test
{
    public partial class test2 : System.Web.UI.Page
    {
        string nmb;
        protected void Page_Load(object sender, EventArgs e)
        {
            nmb = Request.QueryString["number"];
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            // ここでもnmb変数を使いたい
            if(nmb != null)//いらないかな？
            {

            }
        }

    }
}