我有一个表单,它从模型中获取一些值。然后,在POST中,处理输入的数据用户并将用户重定向到另一页面。但是每次我发布表单时,我都会得到null-reference exeption。我在哪里犯错?
提出这个问题的其他问题都没有解决我的问题,这就是为什么我再次询问我的具体代码。
exeptions在foreach循环 - Model.Cart,Model.ShippingOptionsm等。
d
控制器:
@model CheckoutViewModel
@{
ViewBag.Title = "Checkout";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Checkout</h2>
<table class="table">
<thead>
<tr>
<td>#</td>
<td>Name</td>
<td>Quantity</td>
<td>Price</td>
<td>Total price</td>
</tr>
</thead>
@foreach (CartItem i in Model.Cart)
{
<tr>
<td>@Html.Action("ProductPosition", "Cart", new { item = i })</td>
<td>@i.Name</td>
<td>@i.Quantity</td>
<td>@i.Price €</td>
<td>@i.Total €</td>
</tr>
}
</table>
<h3>Total: @Html.Action("TotalPrice", "Cart") €</h3>
@using (Html.BeginForm("Checkout", "Cart"))
{
@Html.AntiForgeryToken()
<h2>Address</h2>
<div class="form-group">
@Html.LabelFor(m => m.Name)
@Html.TextBoxFor(m => m.Name, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.Name)
</div>
<div class="form-group">
@Html.LabelFor(m => m.Address)
@Html.TextBoxFor(m => m.Address, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.Address)
</div>
<div class="form-group">
@Html.LabelFor(m => m.City)
@Html.TextBoxFor(m => m.City, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.City)
</div>
<div class="form-group">
@Html.LabelFor(m => m.PostNumber)
@Html.TextBoxFor(m => m.PostNumber, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.PostNumber)
</div>
<div class="form-group">
@Html.LabelFor(m => m.State)
@Html.TextBoxFor(m => m.State, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.State)
</div>
<h2>Shipping</h2>
foreach (var i in Model.ShippingOptions)
{
<div class="radio">
@Html.RadioButtonFor(m => m.ShippingOption, i.Id) @i.Name - @i.Price €
</div>
}
@Html.ValidationMessageFor(m => m.ShippingOption);
<h2>Payment</h2>
foreach (var i in Model.PaymentOptions)
{
<div class="radio">
@Html.RadioButtonFor(m => m.PaymentOption, i.Id) @i.Name
</div>
}
@Html.ValidationMessageFor(m => m.PaymentOption);
<button type="submit" class="btn btn-primary">Continue</button>
}
@section scripts
{
@Scripts.Render("~/bundles/jqueryval")
}
答案 0 :(得分:0)
在页面顶部添加模型声明
@model CheckoutViewModel