//修改
        public ActionResult Update(int id)
        {
            List<student> li = kaoshiModel.updateSelect(id);
            return View(li);
        }
        public ActionResult updatestudent(int id, string studentname, string studentaddress, string phone)
        {
            int st = kaoshiModel.update(id, studentname, studentaddress, phone);
            if (st>0)
            {
                 return Content("<script>alert('修改成功');window.location.href='/Home/Index';</script>");
            }
            else
            {
                return Content("<script>alert('修改失败');window.location.href='/Home/Index';</script>");
            }
        }

@{
    ViewBag.Title = "Index";
}
<script type="text/java script">
    function Update(id) {
        location.href = "/Home/Update/" + id;
    }

    function del(id) {
        if (confirm("是否删除?")) {
            
            location.href = '/Home/Delete/' + id;
        }
    }
</script> 
 <a href="/Home/Login">登录</a>
<table>
    <tr>
        <th>姓名<th>
         <th>密码</th>
         <th>是否停用</th>
        <th colspan="2">操作</th>
    </tr>
    @foreach (var item in Model)
    {
    <tr>
     <td>@item.Studentname</td>
        <td>@item.phone</td>
        <td>@item.Studentaddress</td>
         <td><a href="#" onclick="Update(@item.Studentid)">修改</a></td>
         <td><a href="#" onclick="del(@item.Studentid)">删除</a></td>
    </tr>
    }
</table>

@{
    ViewBag.Title = "Login";
}

<h2>登录</h2>
 @using (Html.BeginForm("ALogin", "Home", FormMethod.Post))
   {
       
   
           <input type ="text" name="studentname"   placeholder="请输入姓名"/> 
           <input type ="password" name="phone" placeholder="请输入密码"/>  
          
          
            <button type="submit" class="blue" >登录</button> 
             <a href="/Home/Zhuce">注册</a>
         }