Session 保存状态是在 登陆窗口 检查用户密码的动作上执行
1、Models namespace 注册与登陆以及Session.Models { public class UserBF { private MyDBDataContext _context = new MyDBDataContext(); public bool Select(string username,string password) //验证用户名和密码是否正确(登陆) { var query = _context.logins.Where(P=>P.UserName==username&&P.PassWord==password); return query.Count() > 0; } public void Insert(string UserName,string PassWord ) //注册 { logins lo = new logins(); lo.UserName = UserName; lo.PassWord = PassWord; _context.logins.InsertOnSubmit(lo); _context.SubmitChanges(); } } } 2、Controllers namespace 注册与登陆以及Session.Controllers { public class HomeController : Controller { public ActionResult Index() { return View(); } public ActionResult Check(string username,string password) //登陆 { bool isok= new UserBF().Select(username,password); if(isok) { //保存状态 Session["user"] = username; //记录一下会话（登录状态） //跳转页面 return RedirectToAction("Html","Home"); } else { return RedirectToAction("Index"); } } public ActionResult Html() //登陆后的主页面 { if (Session["user"] == null) { return RedirectToAction("Index", "Home"); } return View(); } public ActionResult Login() //注册编辑动作 { if (Session["user"] == null) { return RedirectToAction("Index", "Home"); } return View(); } public ActionResult Insert(string username,string password)//注册动作 { if (Session["user"] == null) { return RedirectToAction("Index", "Home"); } new UserBF().Insert(username,password); return RedirectToAction("Index"); } } } 3、Views Index：登陆界面 @{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>Index</title> <style> .aa { position:relative; margin:auto; 400px; height:400px; } </style> </head> <body> @using(Html.BeginForm("Check","Home")) { <div class="aa"> 用户名: @Html.TextBox("username","")<br> 密 码: @Html.Password("password","")<br> <input id="Submit1" type="submit" value="登陆" /> <a href="/Home/Login"><input id="Button1" type="button" value="注册" /></a> </div> } </body> </html> Login：注册页面 @{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>Login</title> <style> .aa { position:relative; margin:auto; 400px; height:400px; } </style> </head> <body> @using(Html.BeginForm("Insert","Home")) { <div class="aa"> 用户名 ： @Html.TextBox("username","")<br> 密 码 ： @Html.Password("password","")<br> 确认密码： @Html.Password("passwordagain","")<br> <input id="Submit1" type="submit" value="注册" /> </div> } </body> </html> Html：登陆后的主页面 @{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>Html</title> </head> <body> <div> 这是登陆后的页面 欢迎您： @Session["user"] </div> </body> </html>
效果图：
