Question

我正在使用ASP.NET MVC 2.我的表单验证没有触发。我不知道这里有什么不对。

型号：

 public class Stock
    {
        public int StockID { get; set; }

        [Required(ErrorMessage = "Please Select a Client")]
        public int ClientID { get; set; }

         [Required(ErrorMessage = "Please Select An Item")]
        public int ItemID { get; set; }


           [Required(ErrorMessage = "Please Enter Item Count")]
          public int ItemCount { get; set; }

           [Required(ErrorMessage = "Please Enter Item Price")]
        public double Price { get; set; }

           [Required(ErrorMessage = "Please Enter Other Expences")]
        public double OtherExpences { get; set; }

        public double TotalStockValue { get; set; }

          [Required(ErrorMessage = "Please Enter Delivery date")]
        public DateTime DeliveryDate { get; set; }

        public string Description { get; set; }
        public List<Client> lstClient { get; set; }
        public IEnumerable<Item> lstItem { get; set; }

        public string ClientName { get; set; }
        public string ItemName { get; set; }
    }

控制器：

[HttpPost]
        public ActionResult Create(FormCollection collection)
        {

                try
                {
                    if (ModelState.IsValid)
                    {
                        StockRepository rep = new StockRepository();
                        Stock stock = new Stock();
                        stock.ClientID =Convert.ToInt32(Request.Form["ClientID"]);
                        stock.DeliveryDate =Convert.ToDateTime(Request.Form["DeliveryDate"]);
                        stock.Description = Request.Form["Description"];
                        stock.ItemCount =Convert.ToInt32(Request.Form["ItemCount"]);
                        stock.ItemID =Convert.ToInt32(Request.Form["ItemID"]);
                        stock.Price =Convert.ToDouble(Request.Form["Price"]);
                        stock.OtherExpences = Convert.ToDouble(Request.Form["OtherExpences"]);
                        stock.TotalStockValue =Convert.ToDouble((stock.Price * stock.ItemCount)+stock.OtherExpences);
                        rep.Create(stock);
                        rep.Save();
                        return RedirectToAction("Index");
                    }
                    else
                        return View();
                }
                catch
                {
                    return View();
                }

        }

查看：

<%@ Page Title="" Language="C#" MasterPageFile="~/StockMasterPage.Master" Inherits="System.Web.Mvc.ViewPage<StockManagement.Models.Stock>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    Create
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

 <link rel="stylesheet" href="<%= Url.Content("http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css") %>" />
  <script src="<%= Url.Content("http://code.jquery.com/jquery-1.9.1.js") %>"></script>
  <script src="<%= Url.Content("http://code.jquery.com/ui/1.10.3/jquery-ui.js") %>"></script>

  <script>
      $(function () {
          $("#DeliveryDate").datepicker();
      });
  </script>

    <h2>Create</h2>

    <% using (Html.BeginForm()) {%>
        <%: Html.ValidationSummary(true) %>

        <fieldset>
            <legend>Fields</legend>
              <div class="editor-label">
                <%: Html.Label("Select Client")%>
            </div>
            <div class="editor-field">
                <%: Html.DropDownListFor(x => x.ClientID, new SelectList(Model.lstClient, "ClientID", "Name"), "-- Please Select a Client --") %>
                 <%: Html.ValidationMessageFor(model => model.ClientID)%>
            </div>

            <div class="editor-label">
                <%: Html.Label("Select Item") %>
            </div>
            <div class="editor-field">
               <%: Html.DropDownListFor(x => x.ItemID, new SelectList(Model.lstItem, "ItemID", "ItemName"), "-- Please Select an Item --")%>
                 <%: Html.ValidationMessageFor(model => model.ItemID)%>
            </div>


            <div class="editor-label">
                <%: Html.LabelFor(model => model.ItemCount) %>
            </div>
            <div class="editor-field">
                <%: Html.TextBoxFor(model => model.ItemCount) %>
                <%: Html.ValidationMessageFor(model => model.ItemCount) %>
            </div>

            <div class="editor-label">
                <%: Html.LabelFor(model => model.Price) %>
            </div>
            <div class="editor-field">
                <%: Html.TextBoxFor(model => model.Price) %>
                <%: Html.ValidationMessageFor(model => model.Price) %>
            </div>

            <div class="editor-label">
                <%: Html.LabelFor(model => model.OtherExpences) %>
            </div>
            <div class="editor-field">
                <%: Html.TextBoxFor(model => model.OtherExpences) %>
                <%: Html.ValidationMessageFor(model => model.OtherExpences) %>
            </div>

            <div class="editor-label">
                <%: Html.LabelFor(model => model.DeliveryDate) %>
            </div>
            <div class="editor-field">
                <%: Html.TextBoxFor(model => model.DeliveryDate) %>
                <%: Html.ValidationMessageFor(model => model.DeliveryDate) %>
            </div>

            <div class="editor-label">
                <%: Html.LabelFor(model => model.Description) %>
            </div>
            <div class="editor-field">
                <%: Html.TextAreaFor(model => model.Description) %>
                <%: Html.ValidationMessageFor(model => model.Description) %>
            </div>

            <p>
                <input type="submit" value="Create" />
            </p>
        </fieldset>

    <% } %>

    <div>
        <%: Html.ActionLink("Back to List", "Index") %>
    </div>

</asp:Content>

Answer 1

您应该在网络配置中将 ClientValidationEnabled 设置为 true ，或在使用BeginForm之前添加以下代码

 <% Html.ClientValidationEnabled = true; %>

Answer 2

最后，我得到了服务器端验证工作。添加对UpdateModel或TryUpdateModel的调用，该调用将填充模型并激活验证规则，正确设置ModelState.IsValid属性。

[HttpPost]
        public ActionResult Create(FormCollection collection)
        {

                try
                {
                    Stock stock = new Stock();
                    TryUpdateModel(stock);

                    if (ModelState.IsValid)
                    {
                        StockRepository rep = new StockRepository();

                        stock.ClientID =Convert.ToInt32(Request.Form["ClientID"]);
                        stock.DeliveryDate =Convert.ToDateTime(Request.Form["DeliveryDate"]);
                        stock.Description = Request.Form["Description"];
                        stock.ItemCount =Convert.ToInt32(Request.Form["ItemCount"]);
                        stock.ItemID =Convert.ToInt32(Request.Form["ItemID"]);
                        stock.Price =Convert.ToDouble(Request.Form["Price"]);
                        stock.OtherExpences = Convert.ToDouble(Request.Form["OtherExpences"]);
                        stock.TotalStockValue =Convert.ToDouble((stock.Price * stock.ItemCount)+stock.OtherExpences);
                        rep.Create(stock);
                        rep.Save();
                        return RedirectToAction("Index");
                    }
                    else
                        return View();
                }
                catch
                {
                    return View();
                }

        }

MVC 2的内置服务器端验证仅在您的操作接受Model对象作为参数时才有效。这会导致MVC创建模型对象并自动将传入的表单输入值映射到它。作为此过程的一部分，它还将检查模型的DataAnnotation验证属性是否有效。如果一切都有效，那么我们代码中的ModelState.IsValid检查将返回true。

当您的操作接受FormCollection时，这不会发生，因此永远不会评估DataAnnotation验证属性，并且永远不会设置ModelState.IsValid。我们可以通过简单地执行这些步骤来纠正这个问题。 MVC 2提供了我们可以用来执行此操作的函数（UpdateModel和TryUpdateModel）。如果存在验证错误，则Update将抛出，而TryUpdate只会将IsValid设置为false。

使用UpdateModel的另一个好处是，将使用表单集合中的所有值为您填充空模型。

MVC验证未触发

2 个答案: