Asp.net mvc 模型中的值为null或空

我有这个动作方法

[HttpPost]
public ActionResult CreateEsf(EsfLotDetailsModel model)
{
   ...
}

我在这个模型中有两个属性。一个是数据库POCO对象，另一个是列表。在这个方法的GET等价物中，这些值都被正确填充，但是在post中，这些GET设置为null（POCO）和空（列表）

为什么会这样

我的观点在这里

@using UI.Helpers

@model UI.Areas.Admin.Models.EsfLotDetailsModel

@{
    ViewBag.Title = "Create Forward Lot";

}

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Content/AdminDesignTheme/js/wl_Date.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Content/AdminDesignTheme/js/wl_Time.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.mousewheel.min.js")" type="text/javascript"></script>

@{
        <script type="text/javascript">
            $(document).ready(function () {
                var options = {
                    dateFormat: "dd/mm/yy"
                };
                $('#Starts').wl_Date(options);
                $('#Ends').wl_Date(options);
                $('#startTime').wl_Time();
                $('#endTime').wl_Time();
            });
        </script>
}

<p>@Html.ActionLink("Back to Item List", "Index","Inventory")</p>

@Html.ValidationSummary(true, "Please correct the errors and try again.")
@using (Html.BeginForm(new {model = @Model})) {

    @Html.HiddenFor(model => model.Auction.InventoryReference)
    @Html.HiddenFor(model => model.Auction.Title)
    @Html.HiddenFor(model => model.Auction.Description)
    <fieldset>
        <legend></legend>
        <label>ESF Lot Information</label>            

        <section>
            @Html.LabelFor(model => model.Auction.Title)
            <div> @Html.DisplayFor(model => model.Auction.Title) 
            @Html.ValidationMessageFor(model => model.Auction.Title)    </div>   
        </section>

        <section>
             @Html.LabelFor(model => model.Auction.Description)
             <div> @Html.DisplayFor(model => model.Auction.Description) 
             @Html.ValidationMessageFor(model => model.Auction.Description)     </div>  
        </section>

        @if (HttpContextHelper.IsUserAdmin())
        {<section>
             <label for="IsFeatured">Is Featured <i>(displayed in homepage)</i></label>
             <div> @Html.CheckBoxFor(model => model.Auction.IsFeatured) 
             @Html.ValidationMessageFor(model => model.Auction.IsFeatured)     </div>  
        </section>
        }
        else
        {
            <section>
             <label for="IsFeatured">Is Featured <i>(displayed in homepage)</i></label>
             <div> @Html.CheckBoxFor(model => model.Auction.IsFeatured, new { disabled = "disabled" }) (Contact Admin to make this a featured lot) 
             @Html.ValidationMessageFor(model => model.Auction.IsFeatured)     </div>  
            </section>

        }

        @if (HttpContextHelper.IsUserAdmin())
        {<section>
             @Html.Label("VAT Applicable")
             <div> @Html.CheckBoxFor(model => model.Auction.VatApplicable) 
             @Html.ValidationMessageFor(model => model.Auction.VatApplicable)     </div>  
        </section>
        }
        else
        {
            <section>
             @Html.Label("VAT Applicable")
             <div> @Html.CheckBoxFor(model => model.Auction.VatApplicable, new { disabled = "disabled" }) (Contact Admin if it is not VATable) 
             @Html.ValidationMessageFor(model => model.Auction.VatApplicable)     </div>  
            </section>

        }

    </fieldset>

    <fieldset>
        <legend></legend>
        <label>Date and Time</label>

        <section>
             <label>Starts <em>(dd/mm/yy hh:mm)</em></label>
             <div> <input type="text" class="date" id="Starts" /> 
                <input type="text" class="time" data-connect="Starts" id="startTime" /> 

             @Html.ValidationMessageFor(model => model.Auction.Starts)       </div>
        </section>

        <section>
             <label>Ends <em>(dd/mm/yy hh:mm)</em></label>
             <div> <input type="text" class="date" id="Ends" /> 
                   <input type="text" class="time" data-connect="Ends" id="endTime" /> 

             @Html.ValidationMessageFor(model => model.Auction.Ends)   </div>    
        </section>
        <section>
             @Html.LabelFor(model => model.Auction.IsExtensible)
             <div> @Html.CheckBoxFor(model => model.Auction.IsExtensible) 
             @Html.ValidationMessageFor(model => model.Auction.IsExtensible)     </div>  
        </section>
    </fieldset>
    <fieldset>
        <legend></legend>
        <label>Bid Options</label>

        <section>
             @Html.LabelFor(model => model.Auction.StartingBid)
             <div> @Html.TextBoxFor(model => model.Auction.StartingBid) 
             @Html.ValidationMessageFor(model => model.Auction.StartingBid)     </div>  
        </section>

        <section>
             @Html.LabelFor(model => model.Auction.Reserve)
             <div> @Html.TextBoxFor(model => model.Auction.Reserve) 
             @Html.ValidationMessageFor(model => model.Auction.Reserve)   </div>    
        </section>

        <section>
             <label>Reserve Visible <em>(Displays as Reserve met or not met)</em></label>
             <div> @Html.CheckBoxFor(model => model.Auction.ReserveVisible) 
             @Html.ValidationMessageFor(model => model.Auction.ReserveVisible)  </div>     
        </section>

        <section>
             @Html.LabelFor(model => model.Auction.IsBidIncrementPercentual)
             <div> @Html.CheckBoxFor(model => model.Auction.IsBidIncrementPercentual) 
             @Html.ValidationMessageFor(model => model.Auction.IsBidIncrementPercentual)     </div>  
        </section>  

        <section>
             @Html.LabelFor(model => model.Auction.BidIncrement)
             <div> @Html.TextBoxFor(model => model.Auction.BidIncrement, new { @Value = 1m })
             @Html.ValidationMessageFor(model => model.Auction.BidIncrement)        </div>
        </section>              

        <section>
             @Html.LabelFor(model => model.AuctionEvents)
             <div> @Html.DropDownList("Auction", Model.AuctionEvents, "Select auction", new { required = "required" }) 
             @Html.ValidationMessageFor(model => model.AuctionEvents)       </div>
        </section>

        <section>
            <div><button>Create</button></div>
        </section>        

    </fieldset>
}

<div>
    @Html.ActionLink("Back to Item List", "Index","Inventory")
</div>

@使用UI.Helpers
@模型UI.Areas.Admin.Models.EsfLotDetailsModel
@{
ViewBag.Title=“创建转发批次”；
}
@{
$（文档）.ready（函数（）{
变量选项={
日期格式：“日/月/年”
};
$（“#开始”）.wl_日期（选项）；
$（“#结束”）.wl_日期（选项）；
$（'startTime'）.wl_Time（）；
$（'#endTime'）.wl#u Time（）；
});
}
@ActionLink（“返回项目列表”、“索引”、“库存”）

@ValidationSummary（true，“请更正错误并重试”）
@使用（Html.BeginForm（新的{model=@model}））{
@Html.HiddenFor（model=>model.Auction.InventoryReference）
@Html.HiddenFor（model=>model.Auction.Title）
@Html.HiddenFor（model=>model.Auction.Description）
ESF批次信息
@LabelFor（model=>model.Auction.Title）
@DisplayFor（model=>model.Auction.Title）
@Html.ValidationMessageFor（model=>model.Auction.Title）
@LabelFor（model=>model.Auction.Description）
@DisplayFor（model=>model.Auction.Description）
@Html.ValidationMessageFor（model=>model.Auction.Description）
@if（HttpContextHelper.IsUserAdmin（））
{
是特色（显示在主页中）
@CheckBoxFor（model=>model.Auction.IsFeatured）
@Html.ValidationMessageFor（model=>model.Auction.IsFeatured）
}
其他的
{
是特色（显示在主页中）
@CheckBoxFor（model=>model.Auction.IsFeatured，new{disabled=“disabled”}）（联系管理员，使其成为一个特色批次）
@Html.ValidationMessageFor（model=>model.Auction.IsFeatured）
}
@if（HttpContextHelper.IsUserAdmin（））
{
@Html.标签（“适用增值税”）
@CheckBoxFor（model=>model.Auction.vat）
@Html.ValidationMessageFor（model=>model.Auction.VatApplied）
}
其他的
{
@Html.标签（“适用增值税”）
@Html.CheckBoxFor（model=>model.Auction.vat适用，新的{disabled=“disabled”}）（如果不可用，请与管理员联系）
@Html.ValidationMessageFor（model=>model.Auction.VatApplied）
}
日期和时间
开始（日/月/年hh:mm）
@Html.ValidationMessageFor（model=>model.Auction.Starts）
完（日/月/年hh:mm）
@Html.ValidationMessageFor（model=>model.Auction.Ends）
@LabelFor（model=>model.Auction.IsExtensible）
@CheckBoxFor（model=>model.Auction.IsExtensible）
@Html.ValidationMessageFor（model=>model.Auction.IsExtensible）
投标选择权
@LabelFor（model=>model.Auction.StartingBid）
@Html.TextBoxFor（model=>model.Auction.StartingBid）
@Html.ValidationMessageFor（model=>model.Auction.StartingBid）
@LabelFor（model=>model.Auction.Reserve）
@Html.TextBoxFor（model=>model.Auction.Reserve）
@Html.ValidationMessageFor（model=>model.Auction.Reserve）
保留可见（显示为已满足保留或未满足保留）
@CheckBoxFor（model=>model.Auction.ReserveVisible）
@Html.ValidationMessageFor（model=>model.Auction.ReserveVisible）
@LabelFor（model=>model.Auction.IsBidIncrementPercentual）
@CheckBoxFor（model=>model.Auction.IsBidIncrementPercentual）
@Html.ValidationMessageFor（model=>model.Auction.IsBidIncrementPercentual）
@LabelFor（model=>model.Auction.bideincrement）
@TextBoxFor（model=>model.Auction.BidIncrement，新的{@Value=1m}）
@Html.ValidationMessageFor（model=>model.Auction.BidIncrement）
@LabelFor（model=>model.AuctionEvents）
@Html.DropDownList（“拍卖”，Model.AuctionEvents，“选择拍卖”，新建{required=“required”}）
@Html.ValidationMessageFor（model=>model.AuctionEvents）
创造
}
@ActionLink（“返回项目列表”、“索引”、“库存”）

添加FormMethod=FormMethod.Post到您的Html.BeginForm（）中

---

提交按钮在哪里

@using (Html.BeginForm("Action", "Controller",FormMethod.Post))
{
  ...
  <input type="submit" value="submit" />
}

@使用（Html.BeginForm（“Action”、“Controller”、FormMethod.Post））
{
...
}

---

填写表单时，按提交按钮，然后输入[HttpPost]方法，将填写模型值。

这些选项均无效。我将POCO对象中的所有值分别放在模型中，并删除了POCO对象。不知道为什么它不起作用。

你能展示一下你对这个动作的看法吗？这个表格里的模型列表在哪里？模型中的POCO对象是什么？当我执行了您在更新中所写的操作时，我的整个模型将变为空。

@using (Html.BeginForm("Action", "Controller",FormMethod.Post))
{
  ...
  <input type="submit" value="submit" />
}