ASP.NET MVC Html.BeginForm问题 [英] ASP.NET MVC Html.BeginForm Problem

问题描述

我有一个局部视图：

 ＆LT;％@控制语言=C＃继承=System.Web.Mvc.ViewUserControl＆LT; D​​omainModel.Entities.Product＆gt;中％GT;＆LT; D​​IV CLASS =项＆GT;
    ＆所述; H3＆GT;＆下;％= Model.Name％GT;＆下; / H3＆GT;
    ＆所述;％= Model.Description％GT;    ＆LT;使用（Html.BeginForm（AddToCart，车））{％GT％;
        ＆所述;％= Html.Hidden（产品ID）％＆GT;
        ＆所述;％= Html.Hidden（RETURNURL，ViewContext.HttpContext.Request.Url.PathAndQuery）％GT;
        ＆LT;输入类型=提交值=+添加到购物车/＆GT;
    ＆LT;％}％GT;    ＆所述; H4＆GT;＆下;％= Model.Price.ToString（C）％＆GT;＆下; / H4＆GT;
＆LT; / DIV＆GT;
 

这是被呈现的HTML：

 ＆LT; D​​IV CLASS =项＆GT;
    ＆LT; H3＆GT;皮划艇＆LT; / H3 GT＆;
    一个单人艇
    ＆LT;形式的行动=方法=后＆GT;
        ＆LT;输入ID =产品名称=产品类型=隐藏值=1/＆GT;
        ＆LT;输入ID =RETURNURLNAME =RETURNURL类型=隐藏值=//＆GT;
        ＆LT;输入类型=提交值=+添加到购物车/＆GT;
    ＆LT; /表及GT;
    ＆LT; H4＆GT; $ 275.00＆LT; / H4＆GT;
＆LT; / DIV＆GT;
 

点击提交按钮时，没有任何反应，我是pretty肯定是因为表单action属性没有价值。不应该BeginForm（动作控制器）照顾呈现出形式的行动？我在做什么错了？

修改

从CartController AddToCart行动code：

 公共RedirectToRouteResult AddToCart（车车，诠释的productID，串RETURNURL）
    {
        产品产品= productsRepository.Products.FirstOrDefault（P =＆GT; p.ProductID ==的productID）;        cart.AddItem（产品，1）;
        返回RedirectToAction（指数，新的{RETURNURL}）;
    }
 

编辑2

这使得局部视图：

 ＆LT; ASP：内容ID =内容2ContentPlaceHolderID =日程地址搜索Maincontent=服务器＆GT;
    ＆LT;％的foreach（在型号VAR产品）{％GT;
        ＆所述;％Html.RenderPartial（ProductSummary产品）; ％GT;
    ＆LT;％}％GT;    ＆LT; D​​IV CLASS =寻呼机＆GT;
    页：
    ＆LT;％= Html.PageLinks（（int）的计算机[当前页]，
                      （INT）计算机[总页数]，
                      X =＆GT; Url.Action（列表，新的{页= X，类别=计算机[CurrentCategory]}））％GT;
    ＆LT; / DIV＆GT;
＆LT; / ASP：内容＆GT;
 

编辑3

路线：

 公共静态无效的RegisterRoutes（RouteCollection路线）
    {
        routes.IgnoreRoute（{}资源个.axd / {*} PATHINFO）;        routes.MapRoute（
            空，//不需要名
            ，//匹配根URL，即〜/
            新{控制器=产品，行动=名单，类别=（字符串）空，页面= 1} //默认
        ）;        routes.MapRoute（
            空，//不需要名字
            第{PAGE}，// URL模式，例如〜/ Page683
            新{控制器=产品，行动=名单，类别=（字符串）空} //默认
            新{页= @\\ D +} //约束：页面必须是数字
        ）;        routes.MapRoute（NULL，
            {类别}，
            新{控制器=产品，行动=名单，页面= 1}）;        routes.MapRoute（NULL，
            {}类/页{PAGE}，
            新{控制器=产品，行动=名单}，
            新{页= @\\ D +} //约束：页面必须是数字
        ）;    }
 

解决方案

看起来你不是有一个默认的路由设置做。 BeginForm 使用 UrlHelper.GenerateUrl 来匹配动作/控制器名称为您的路由集合。所以，如果你没有一个映射到 AddToCart 路线，那么就无法生成它的URL。尝试添加这对你的路由的底部：

  routes.MapRoute（
    默认，
    {控制器} / {行动} / {ID}
    新{控制器=产品，行动=名单，ID =}
）;
 

I have a partial view:

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<DomainModel.Entities.Product>" %>

<div class="item">
    <h3><%= Model.Name %></h3>
    <%= Model.Description %>

    <% using (Html.BeginForm("AddToCart", "Cart")) { %>
        <%= Html.Hidden("ProductID") %>
        <%= Html.Hidden("returnUrl", ViewContext.HttpContext.Request.Url.PathAndQuery) %>
        <input type="submit" value="+ Add to cart" />
    <% } %>

    <h4><%= Model.Price.ToString("c")%></h4>
</div>

And here is the html that gets rendered:

<div class="item"> 
    <h3>Kayak</h3> 
    A boat for one person
    <form action="" method="post">
        <input id="ProductID" name="ProductID" type="hidden" value="1" /> 
        <input id="returnUrl" name="returnUrl" type="hidden" value="/" /> 
        <input type="submit" value="+ Add to cart" /> 
    </form> 
    <h4>$275.00</h4> 
</div>

Nothing happens when the submit button is clicked and I am pretty sure it's because the form action attribute has no value. Shouldn't BeginForm(action, controller) take care of rendering out the form action? What am I doing wrong?

EDIT

Code from CartController AddToCart action:

    public RedirectToRouteResult AddToCart(Cart cart, int productID, string returnUrl)
    {
        Product product = productsRepository.Products.FirstOrDefault(p => p.ProductID == productID);

        cart.AddItem(product, 1);
        return RedirectToAction("Index", new { returnUrl });
    }

EDIT 2

The view that renders the partial:

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <% foreach (var product in Model) { %>
        <% Html.RenderPartial("ProductSummary", product); %>
    <% } %>

    <div class="pager">
    Page:
    <%=Html.PageLinks((int)ViewData["CurrentPage"],
                      (int)ViewData["TotalPages"],
                      x => Url.Action("List", new { page = x, category = ViewData["CurrentCategory"] })) %>
    </div>
</asp:Content>

EDIT 3

Routes:

public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            null, // don't need a name
            "", // matches the root URL, i.e. ~/
            new { controller = "Products", action = "List", category = (string)null, page = 1 } //Defaults
        );

        routes.MapRoute(
            null, // don't need name
            "Page{page}", // URL pattern, e.g. ~/Page683
            new { controller = "Products", action = "List", category = (string)null }, // defaults
            new { page = @"\d+" } // constraints: page must be numerical
        );

        routes.MapRoute(null,
            "{category}",
            new { controller = "Products", action = "List", page = 1 });

        routes.MapRoute(null,
            "{category}/Page{page}",
            new { controller = "Products", action = "List" },
            new { page = @"\d+" } // constraints: page must be numerical
        );

    }

解决方案

It looks like you don't have a default route set up. BeginForm uses UrlHelper.GenerateUrl to match up the action/controller names to your route collection. So if you don't have a route that maps to AddToCart, then it can't generate a URL for it. Try adding this to the bottom of your routes:

routes.MapRoute(
    "Default",
    "{controller}/{action}/{id}",
    new { controller = "Products", action = "List", id = "" }
);

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