db.cs

根据实际情况还可以在数据库中附加更多方面的投票

using System;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

namespace vote
{
    public class DB
    {
        public static SqlConnection createConnection()
        {
            //add by 51aspx
            string strConn = ConfigurationSettings.AppSettings["ConnectionString"];
            SqlConnection con = new SqlConnection(strConn);
            return con;
        }
    }
}