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public class MvcApplication : System.Web.HttpApplication
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
            routes.MapRoute(
                "Default",                                   // Route name
                "{controller}/{action}/{id}",                // URL with parameters
                new { controller = "Home", action = "About", id = "" }  // Parameter defaults
            );
        }
        protected void Application_Start()
        {
            RegisterRoutes(RouteTable.Routes);
        }
}
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using System.Data.SqlClient;
string sql = "server=.;uid=sa;pwd=;database=tablename;";
ACCESS:
using System.Data.OleDb;
string sql = "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=" + HttpRuntime.AppDomainAppPath + "//App_Data//db.mdb";
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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
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protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        ViewState["BackUrl"] = Request.UrlReferrer.ToString();
    }
}
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/// ·µ»Ø°´Å¥µã»÷ʼþ
/// </summary& ......

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