asp.net mvc 使用linq登录并且判断登录的想法
就用默认的框架...
Index.aspx代码如下
<div>
<form action="/home/login" method="post">
name:<input id="name" name="name" type="text" /><br /><br />
pass:<input id="pass" name="pass" type="text" /><br /><br />
<input type="submit" value="Save" />
</form>
</div>
在HomeController.cs中键入以下代码
[HandleError]
public class HomeController : Controller
{
public ActionResult Index()
{
Session["w"] = null;//session写入空值
return View();
}
public ActionResult About()
{
ViewData["Title"] = "About Page";
if (Session["w"] != null) //判断是否登录
{
return View();
}
else
{
return View("index");
}
}
public ActionResult login()
{
string name = Request.Form["name"].Trim();//取得用户名
string pass = Request.Form["pass"]Trim();//取得密码
LinqDataContext db = new LinqDataContext();//数据库上下文
var a = from b in db.user
where b.name == name && b.pass == pass//判断是否存在用户
select b;
if (a.Count() ==1)//如果有一个正确值就写入session并且到about
{
Session["w"] = name;
return View("About");
}
else
{
return View("Index");//错误就返回到index
}
}
}
}