• MVC 中的家常事


           对于@后面变量加上括号解决异意的方法 

                     例如: hello@User.Name 会误判为电子邮箱,解决办法是括号,即hello@(User.Name)

           使用@Html.Raw()输出后台到.cshtml的前端代码

                      如后台               ViewBag.abc="<a href="#">123</a>";

                      .cshtml              @Html.Raw(ViewBag.abc);

           Head中的可变模板<head>@RenderSection(“onehead”,false) </head>   在继承该模板的页面使用时:@section onehead{}

            一些基本的东西还是整一下吧,不然老百度也不是事,好记性不如烂笔头,写一写吧

              @Html.ActionLink()的两种重载,会用了其他 的就不用说了

               @Html.ActionLink("删除链接", "MyHome", "Home", new {},new { id="myid", @class="myclass", onclick="return confirm("你确定要删除吗?")"})

                                         // 生成结果如下,如果参可传也应像上面一样传第一个New

                                         <a class="myclass" id="myid" onclick="return confirm("你确定要删除吗?")" href="/Home/MyHome">删除链接</a>

                 // 下面这个New是传的参数,第二个New传的是HTML属性

              @Html.ActionLink("删除链接", "MyHome", "Home", new {id="123",name="张三"},new { id="myid", @class="myclass", onclick="return confirm("你确定要删除吗?")"}) 

                                   //结果下面,上面的第一个New是传的参数,第二个New传的是HTML属性

                                 <a class="myclass" id="myid" onclick="return confirm("你确定要删除吗?")" href="/Home/MyHome/123?name=%E5%BC%A0%E4%B8%89">删除链接</a>

              @Html.ActionLink("删除链接", "MyHome", "Home")

                

     @Html.BeginForm()

                //  指定Form表单提交方式和路径等

               @using (Html.BeginForm("MyForm", "FormController", FormMethod.Post))
                {

     

    }

     <form action="/FormController/MyForm" method="post"/>    // 结果

    // 下面是带 HTML标签id和class属性的
    @using (Html.BeginForm("MyForm", "FormController", FormMethod.Post, new { id="123",@class="myclass"}))
    {

     

    }

    <form class="myclass" id="123" action="/FormController/MyForm" method="post"/>   // 结果

    //下面是带参数的见下面的new
    @using (Html.BeginForm("Myform", "FormController", new { Myid = "123", name = "张三" }, FormMethod.Post))
    {

     

    }

    <form action="/FormController/Myform?Myid=123&name=%E5%BC%A0%E4%B8%89" method="post"/>    // 结果

    //  下面是带参数和HTML属性的,第一个New传的是参数,第二个new 传的HTML是属性
    @using (Html.BeginForm("MyForm", "FormController", new { myid = "123", name = "张三" }, FormMethod.Post, new { id = "myform", @class = "myclass" }))
    {

     

    }

    <form class="myclass" id="myform" action="/FormController/MyForm?myid=123&name=%E5%BC%A0%E4%B8%89" method="post"/>   // 结果

     

     

    @Html.TextBox()和@Html.TextBoxFor()

    @Html.TextBox("myText")
    <input id="myText" name="myText" type="text" value="" />  // 结果
    
    @Html.TextBox("mytxt", Model.Name, new { @style = "color:Red;" })
    <input id="mytxt" name="mytxt" type="text" style=" color:Red" value="Model.Name的值" />   // 结果
    
    @Html.TextBoxFor(m => m.Name, new { @style=" color: Red;"})
    <input id="name" type="text" name="name" style="color: Red;" />  // 结果

       如果与后台相关 可在后台实体中[Display(Name="用户名:")]  ,那个 @Html.LableFor(m=>m.UserName)  则显示为用户名 ,代码如下:

    namespace MvcApplication1.Models
    {
        public class User
        {
            public int Id { get; set; }
    
            public string UserName { get; set; }
    
            [Display(Name="用户真实姓名")]
            public string Name { get; set; }
        }
    }

    在前台View中的代码

    @{
        ViewBag.Title = "MyHome";
        Layout = "~/Views/Shared/_Layout.cshtml";
    }
    @model MvcApplication1.Models.User
    
    @Html.LabelFor(m=>m.Name)
    @Html.TextBoxFor(m=>m.Name)

    显示结果

          

      注意上面 @Html.LabelFor的翻译

     @Html.CheckBox()

               @Html.CheckBox("chk",true)

                @Html.CheckBoxFor(m=>m.IsVaild,new {@class="myclass"}) 

    @Html.DropDownList("ddl1",(SelectList)ViewData["TName"],"--XXx--")

             

          public ActionResult Index()
            {
                List<User> list = new List<User>(){
                new User{Id=1,UserName="admin",Name="张三"},
                new User{Id=2,UserName="pm",Name="张三"},
                new User{Id=3,UserName="one",Name="张三"},
                };
                ViewData["listUser"] = new SelectList(list, "Id", "UserName");
                return View();
            }
    
    
    
    
    
    @Html.DropDownList("ddlUserName", ViewData["listUser"] as SelectList,"---请选择-")

          强类型的如下

            public ActionResult Index()
            {
                List<User> list = new List<User>(){
                new User{Id=1,UserName="admin",Name="张三"},
                new User{Id=2,UserName="pm",Name="张三"},
                new User{Id=3,UserName="one",Name="张三"},
                };
                ViewData["listUser"] = new SelectList(list, "Id", "UserName");
                User u = new User();
                u.UserName = "admin";
                return View(u);
            }
    
    
    
    @Html.DropDownListFor(m => m.Id, ViewData["listUser"] as SelectList, "请选择", new { @class="myclass"})

    强类型选中如下: 选中u.id=2的

            public ActionResult Index()
            {
                List<User> list = new List<User>(){
                new User{Id=1,UserName="admin",Name="张三"},
                new User{Id=2,UserName="pm",Name="张三"},
                new User{Id=3,UserName="one",Name="张三"},
                };
                User u = new User();
                u.Id = 2;
                ViewData["listUser"] = new SelectList(list, "Id", "UserName",u.Id);
                u.UserName = "pm";
                return View(u);
            }
    
    
    @Html.DropDownListFor(m => m.Id, ViewData["listUser"] as SelectList, new { @class="myclass"})    // 

    数据字典类型转换

            public ActionResult MyHome()
            {
                Dictionary<int, string> myd = new Dictionary<int, string>();
                myd.Add(1, "admin");
                myd.Add(2,"pm");
                myd.Add(3, "one");
                ViewData["ddl"] = new SelectList(myd, "Key", "Value");
                return View();
            }
    
    
    @Html.DropDownList("ddl",(SelectList)ViewData["ddl"],"---selectedone-")

    @Html.RadioButton()

       

         一组单选筐须id和name相同,代码如下

                 

    @Html.RadioButton("rdSix","",true)
    @Html.RadioButton("rdSix","")
             @{
    
                         if(ViewBag.IsError!=null && ViewBag.IsError )
    
                             {
    
                                   <script> alert("@ViewBag.Message")  </script>   // 注意alert里面的“”很重要!
    
                             }
    
                 }
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  • 原文地址:https://www.cnblogs.com/yingger/p/3834772.html
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