.net 网站登录

如何实现，按回车键，自动登录，在相应控件上添加onkeypress事件

function CheckCodePress(e){
    var e = e||window.event
    if (e.keyCode ==13){//13在keyCode中代表回车键
        //登录JS函数
        Login();
    }
}

public ActionResult Index()
{
    string cookieName=NewProductConsts.NewProCookieName;//常量
    HttpCookie httpCookie = Request.Cookies[cookieName]
    if(httpCookie != null)
    {
        HttpContext.Session["userName"]=httpCookie.Values["userName"].ToString();
        HttpContext.Session["password"]=httpCookie.Values["password"].ToString();
    }
    ViewData["msg"]=string.Empty;
    return View(ViewData);
}

登录页面，把用户的信息写到表单中，给表单起一个id，填好action，如<form id="curform action="../Login/Index" method="post">，提交的时候写一个函数，绑定到一个按钮上

function Login()

{

$("#curform").submit();

}

点击按钮之后，进入到action中

public ActionResult Index(string userName,string password,string checkCode)
{
    string result=string.Empty;
    int id=-;
    if(string.IsNullOrEmpty(userName))
    {
        result="用户名不能为空!";
    }
    else if(string.IsNullOrEmpty(password))
    {
        result="密码不能为空!";
    }
    else if(NewProductWS.GetInstance().Client.Login(NewProductConsts.header,userName,password,out id))
    {
        string cookieName=NewProductConsts.NewProCookieName;//常量

        HttpCookie cookie=new HttpCookie(cookieName);
        cookie.Values.Add("userName",userName);
        cookie.Values.Add("password",password);
        cookie.Expires=DataTime.Now.AddDays();
        Response.Cookie.Add(cookie);

        Session.Timeout=;
        HttpContext.Session.Timeout=;
        HttpContext.Session["userName"]=cookie.Values["userName"].ToString();
HttpContext.Session["password"]=cookie.Values["password"].ToString();
        //登录成功，获取权限
        NewProductWS.Cur_UserID=id;
        //保存用户名
        NewProductWS.Cur_UserName=userName;
        HttpContext.Session["LoginTime"]=DataTime.Now.ToString();
        //保存权限列表
        BasePage.PermissionElementList=Newtonsoft.Json.JsonConvert.DeserializeObject<List<PermissionElementList>>(NewProductWS.GetInstance().client.GetUserPermission(NewProductConsts.header,id));
        HttpSession.Session["Permissions"]=BasePage.PermissionElementList;
        return RedirectToAction("Index","Home");//action-->action

    }
    else
    {
        result="用户名或密码错误!"'
    }
    ViewData["msg"]=result;
    return View(ViewData);
}