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我有一個MVC 5應用程序，我使用的for循環，所以我可以綁定一個集合時傳回控制器。這適用於我所有的屬性，除了基於DropDownFor類型的屬性。MVC枚舉模型綁定在For循環
的問題是該屬性的名稱沒有設置成「產品[0] .TypeOfSubscription
我試圖3種不同的方式：該第一2方法最終獲得的名稱[0] .TypeOfSubscription和第三個具有正確名稱的產品[0] .TypeOfSubscription，但沒有綁定發生時，我將它傳回控制器。
我認爲問題是第三個選項是綁定，但因爲它隱藏它沒有得到分配的選定值。
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription)
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription,
new { name = "product[" + @i + "].TypeOfSubscription"})
@Html.Hidden("product[" + @i + "].TypeOfSubscription",
Model[i].TypeOfSubscription)
型號
public class VmStoreProducts
{
public VmStoreProducts()
{
NoOfUsers = 1;
}
public enum SubscriptionType
{
Monthly,
Annual
}
public int MojitoProductId { get; set; }
[Display(Name = "Category")]
public string ProductCategory { get; set; }
public virtual string Name { get; set; }
public string Description { get; set; }
[Display(Name = "Image")]
public byte[] ImageData { get; set; }
[Display(Name = "Type of Subscription")]
public SubscriptionType TypeOfSubscription { get; set; }
public decimal Price { get; set; }
[Display(Name = "No. of Users")]
public int NoOfUsers { get; set; }
[Display(Name = "Total Price")]
[DisplayFormat(DataFormatString = "{0:C}")]
public decimal TotalPrice { get; set; }
}
For循環 - 查看
@model PagedList.IPagedList<VmStoreProducts>
@using Mojito.Domain
@using PagedList.Mvc;
<link href="~/Content/PagedList.css" rel="stylesheet" type="text/css" />
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Mojito Products</h2>
<div class="col-md-9"></div>
<div class="col-md-3">
@using (Html.BeginForm("Index", "MojitoProducts", FormMethod.Get))
{
<p>
@Html.TextBox("SearchString", ViewBag.CurrentFilter as string)
<input type="submit" value="Search" />
</p>
}
</div>
@using (Html.BeginForm("AddToCart", "ShoppingCart", FormMethod.Post))
{
<table class="table">
<tr>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().ImageData)
</th>
<th>
@Html.ActionLink("Category", "Index", new { sortOrder = ViewBag.SortByCategory, currentFilter = ViewBag.CurrentFilter })
</th>
<th>
@Html.ActionLink("Product", "Index", new { sortOrder = ViewBag.SortByProduct, currentFilter = ViewBag.CurrentFilter })
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().Description)
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().TypeOfSubscription)
</th>
<th>
@Html.ActionLink("Price", "Index", new { sortOrder = ViewBag.SortByPrice, currentFilter = ViewBag.CurrentFilter })
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().NoOfUsers)
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().TotalPrice)
</th>
<th></th>
</tr>
@for (int i = 0; i < Model.Count; i++)
{
<tr>
<td>
@if (Model[i].ImageData != null)
{
<div class="pull-left" style="margin-right: 10px">
<img class="img-thumbnail" width="75" height="75"
src="@Url.Action("GetImage", "MojitoProducts",
new { Model[i].MojitoProductId })" />
</div>
}
</td>
<td>
@Html.DisplayFor(modelItem => Model[i].ProductCategory)
</td>
<td>
@Html.TextBox("product[" + @i + "].Name",
Model[i].Name, new { @readonly = "readonly" })
</td>
<td>
@Html.DisplayFor(modelItem => Model[i].Description)
</td>
<td>
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription)
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription,
new { name = "product[" + @i + "].TypeOfSubscription"})
@Html.TextBox("product[" + @i + "].TypeOfSubscription",
Model[i].TypeOfSubscription, new { hidden=true })
</td>
<td>
@Html.TextBox("product[" + @i + "].Price",
Model[i].Price, new { @readonly = "readonly", style = "width:50px" })
</td>
<td>
@Html.TextBox("product[" + @i + "].NoOfUsers",
Model[i].NoOfUsers, new { type = "number", min = "0", style = "width:50px" })
</td>
<td>
@Html.TextBox("product[" + @i + "].TotalPrice",
Model[i].TotalPrice, new { style = "width:50px" })
</td>
<td>
<div class="pull-right">
@if (Request.Url != null)
{
@Html.Hidden("product[" + @i + "].MojitoProductId",
Model[i].MojitoProductId)
@Html.Hidden("returnUrl", Request.Url.PathAndQuery)
}
</div>
</td>
</tr>
}
<tr>
<td colspan="6">
<div class="pull-right">
<input type="submit" class="btn btn-success" value="Add to cart" />
</div>
</td>
</tr>
</table>
}
控制器方法
public ActionResult AddToCart(List<VmStoreProducts> product, string returnUrl)
{
ShoppingCart cartObjects = (Session["CartObjects"] as ShoppingCart) ?? new ShoppingCart();
Session["CartObjects"] = cartObjects;
foreach (var item in product)
{
if (item.NoOfUsers > 0)
{
cartObjects.AddItem(item);
}
}
return RedirectToAction("Index", new { returnUrl });
}
第一個是正確的用法（第二個是毫無意義的你不能重寫'name'屬性，第三個沒有任何意義 - 它只會回傳初始值）。 name屬性將是'[0] .TypeOfSubscription'，因爲那是你綁定的屬性的名稱。請張貼您的模型和'for'循環 – 2014-09-25 07:23:22
我已經發布了模型和視圖for for循環。我正在考慮用Jquery編寫一些東西，以便在枚舉值更改時更新隱藏文本框的值。我相信這會起作用，但不知道這是否是最佳做法。 – ccocker 2014-09-25 08:00:25