• MVC 【Razor 视图引擎】案例分析


    using MvcApplication1.Models;
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.Mvc;
    
    namespace MvcApplication1.Controllers
    {
        public class LoginController : Controller
        {
            //
            // GET: /Login/
    
    
            // 登录视图
            public ActionResult Index()
            {
                return View();
            }
    
    
            // 登录验证
            public ActionResult YanZheng(string uname, string pwd)
            {
    
                bool b = new UsersData().SelectUser(uname, pwd);
                if (b)
                {
                    Response.Cookies["user"].Value = uname;
                    Response.Cookies["user"].Expires = DateTime.Now.AddDays(3);
    
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    TempData["loginerror"] = "用户名密码错误";
                    return RedirectToAction("Index", "Login");
                }
    
            }
    
        }
    }
    登录 控制器
    @{
        Layout = null;
    }
    
    <!DOCTYPE html>
    
    <html>
    <head>
        <meta name="viewport" content="width=device-width" />
        <title>Index</title>
    </head>
    <body>
        <div>
            @{using (Html.BeginForm("YanZheng", "Login"))
              {
                @:用户名:<input type="text" name="uname" /><br />
                @:密码:<input type="password" name="pwd" /><br />
                <input type="submit" value="登录" />
                  if (TempData["loginerror"] != null)
                  {
                <div style="color: red;">@TempData["loginerror"]</div>
                  }
              }
            }
        </div>
    </body>
    </html>
    登录 视图

    --------------------------------------------

    using MvcApplication1.Models;
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.Mvc;
    
    namespace MvcApplication1.Controllers
    {
        public class HomeController : Controller
        {
            //
            // GET: /Home/
    
    
    
    
            //展示方法
            public ActionResult Index()
            {
                //判断是否登录,有登录信息展示
                if (Request.Cookies["user"] != null)
                {
                    return View();
                }
                else
                {    //无登录信息返回原视图
                    return RedirectToAction("Index", "Login");
                }
            }
    
            //添加视图
            public ActionResult Insert()
            {
                return View();
            }
    
    
            //添加方法
            //界面上 name 取的名 与字段名一样 会自动拼成匹配的对象
            public ActionResult Insert1(Users u)
            {
                new UsersData().Insert(u);
                return RedirectToAction("Index");
            }
    
    
            //修改 接收传值
            public ActionResult Update(string id)
            {
                Users u = new UsersData().SelectUser(id);
                if (u != null)
                {
                    return View(u);
                }
                else
                {
                    return RedirectToAction("index", "Home");
                }
            }
    
    
    }
    展示,修改,添加 控制器
    @{
        Layout = null;
    }
    @using MvcApplication1.Models;
                                   @*引用命名空间*@
    
    <!DOCTYPE html>
    
    <html>
    <head>
        <meta name="viewport" content="width=device-width" />
        <title>Index</title>
    </head>
    <body>
        <div>
            <h1>这是Razor语法出来的视图主界面</h1>
    
            <table style=" 100%; text-align: center; background-color: navy;">
                <tr style="color: white;">
                    <td>用户名</td>
                    <td>密码</td>
                    <td>昵称</td>
                    <td>性别</td>
                    <td>生日</td>
                    <td>民族</td>
                    <td>操作</td>
                </tr>
    
                @{
                    List<Users> ulist = new UsersData().SelectAll();
    
                    foreach (Users u in ulist)
                    {
    
                    <tr style="background-color: white;">
                        <td>@u.UserName</td>
                        <td>@u.PassWord</td>
                        <td>@(u.NickName)同学</td>
                        <td>@(u.Sex == true ? "" : "")</td>
                        <td>@u.Birthday.Value.ToString("yyyy年MM月dd日")</td>
                        <td>@u.UserNation.NationName</td>
    
                        <td>@Html.ActionLink("修改", "Update/" + u.Ids, "Home") </td>
                                                                 @*修改--在动作后面接 传的值*@    
                    </tr>
                    }
                }
    
            </table>
            @Html.ActionLink("添加hehe", "Insert", "Home")     
                                                                 @*使用超链接添加*@
    
            <input type="button" value="添加新用户" id="btn1" />
                                                                 @*使用普通按钮添加*@
        </div>
    </body>
    </html>
    
    <script type="text/javascript">
    
        document.getElementById("btn1").onclick = function () {
            window.location.href = "@Url.Action("Insert", "Home")";
    
        }                                 @*使用普通按钮添加----方法*@
    
    
    </script>
    展示 视图
    @{
        Layout = null;
    }
    @using MvcApplication1.Models;
                                     @*引用命名空间*@
    
    <!DOCTYPE html>
    
    <html>
    <head>
        <meta name="viewport" content="width=device-width" />
        <title>Insert</title>
    </head>
    <body>
        <div>
            <h1>添加新用户</h1>
    
            @{ using (Html.BeginForm("Insert1", "Home", "post"))
               
               {
                   
                @:用户名:<input type="text" name="username" /><br />
                @:密码:<input type="text" name="password" /><br />
                @:昵称:<input type="text" name="nickname" /><br />
                @:性别:
                <input type="radio" value="True" id="r1" name="sex" checked="checked" /><label for="r1">男</label>
                <input type="radio" value="False" id="r2" name="sex" /><label for="r2">女</label>
                <br />
                @:生日:<input type="text" name="birthday" /><br />
                @:民族:
                <select name="nation">
                    @{
                   List<UserNation> unlist = new UserNationData().SelectAll();
    
                   foreach (UserNation un in unlist)
                   {
                        <option value="@un.NationCode">@un.NationName</option>
                   }        
                        
                    }
                </select>
                <br />
                
                
                <div id="div1" style=" 100px; height: 100px; background-color: red;">保存</div>
                
                <input type="button" value="保存" id="btn1" />
                
                
               }
            }
    
    
        </div>
    </body>
    </html>
    <script type="text/javascript">
        document.getElementById("div1").onclick = function () {
            this.parentNode.submit();
                                        //点击div时 提交
    
        }
        document.getElementById("btn1").onclick = function () {
            this.form.submit();
    
        }                               //普通按钮提交 
    
    
    
    </script>
    添加 视图
    @{
        Layout = null;
    }
    @using MvcApplication1.Models;
                                   @*引用命名空间*@
    
    @model Users      
                                  @* 声明传进来的强类型的数据类型*@
    
    <!DOCTYPE html>
    
    <html>
    <head>
        <meta name="viewport" content="width=device-width" />
        <title>Update</title>
    </head>
    <body>
        <div>
            @{ using (Html.BeginForm("Update1", "Home", "post"))
               {
                @:用户名:<input type="text" disabled="disabled" name="username" value="@Model.UserName" /><br />
                @:密码:<input type="text" name="password" value="@Model.PassWord" /><br />
                @:昵称:<input type="text" name="nickname" value="@Model.NickName" /><br />
                @:性别:
    
                <input type="radio" value="True" id="r1" name="sex" @(Model.Sex == true ? "checked='checked'" : "") /><label for="r1">男</label>
                <input type="radio" value="False" id="r2" name="sex" @(Model.Sex == false ? "checked='checked'" : "") /><label for="r2">女</label>
    
                <br />
                @:生日:<input type="text" name="birthday" value="@Model.Birthday.Value" /><br />
                @:民族:
                <select name="nation">
                    @{
                   List<UserNation> unlist = new UserNationData().SelectAll();
    
                   foreach (UserNation un in unlist)
                   {
                        <option @(un.NationCode == Model.Nation ? "selected='selected'" : "") value="@un.NationCode">@un.NationName</option>
                   }        
                        
                    }
                </select>
                <br />
                
                <div id="div1" style=" 100px; height: 100px; background-color: red;">保存</div>
                   //用 div 提交
                
                <input type="button" value="保存" id="btn1" />
                   //用普通按钮提交
    
               }
            }
        </div>
    </body>
    </html>
    <script type="text/javascript">
        document.getElementById("div1").onclick = function () {
            this.parentNode.submit();
                                           //用 div 提交
        }
        document.getElementById("btn1").onclick = function () {
            this.form.submit();
                                          //用普通按钮提交    
        }
    
    </script>
    修改 视图

    --------------

    @{
        Layout = null;
    }
    
    <!DOCTYPE html>
    
    <html>
    <head>
        <meta name="viewport" content="width=device-width" />
        <title>Test1</title>
        <script src="~/js/jquery-1.7.1.min.js"></script>
    </head>
    <body>
        <div>
    
            <input type="text" id="txt1" name="t1" />
            <input type="button" value="验证" id="btn1" />
    
        </div>
    </body>
    </html>
    
    <script type="text/javascript">
    
        $("#btn1").click(function () {
            $.ajax({
                url: "/ajax/aaa.ashx", data: { "t": $("#txt1").val() }, type: "post", dataType: "json",
                success: function (msg) {
                    if (msg.ok == "0") {
                        alert("可用");
                    }
                    else {
                        alert("抱歉,已被占用!!");
                    }
    
                }
            });
    
        });
    
    </script>
    番外--用AJAX验证
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using MvcApplication1.Models;
    
    namespace MvcApplication1.ajax
    {
        /// <summary>
        /// aaa 的摘要说明
        /// </summary>
        public class aaa : IHttpHandler
        {
    
            public void ProcessRequest(HttpContext context)
            {
                string end = "{"ok":"0"}";
                string uname = context.Request["t"];
    
                using (DataClasses1DataContext con = new DataClasses1DataContext())
                {
                    Users u = con.Users.Where(r => r.UserName == uname).FirstOrDefault();
                    if (u != null)
                    {
                        end = "{"ok":"1"}";
                    
                    }
                }
                context.Response.Write(end);
                context.Response.End();
            }
    
            public bool IsReusable
            {
                get
                {
                    return false;
                }
            }
        }
    }
    验证

    -- 各 方法未写

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  • 原文地址:https://www.cnblogs.com/Tanghongchang/p/7128573.html
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