Question

我有一个强烈输入视图模型的PartialView

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<VATRateManager_MVC.Models.ViewModels.RateControlEditViewModel>" %>

<script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script>
<script src="../../Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script>

<% Html.EnableClientValidation(); %>
<% using (Html.BeginForm("Edit", "Rate", FormMethod.Post))
{ %>
<%=Html.ValidationSummary() %>

<%=Html.HiddenFor(Model => Model.ParentID)%>
<%=Html.HiddenFor(Model => Model.ParentTypeID)%>
<%=Html.HiddenFor(Model => Model.ParentTypeDescription)%>
<%=Html.HiddenFor(Model => Model.RateID)%>

<div >
    <%=Html.LabelFor(Model => Model.RateValue)%>
    <%=Html.DisplayFor(Model => Model.RateValue) %>
</div>

<div>
    <%=Html.LabelFor(Model => Model.StartDate)%>
    <%=Html.DisplayFor(Model => Model.StartDate, new { @class = "date" })%>
   <%-- <%=Html.EditorFor(Model => Model.StartDate, new { @class = "date" })%>--%>
</div>

<div>
    <input type="submit" name="button" value="Edit"/>
</div>

继承人视图模型

public class RateControlEditViewModel
{
    /// <summary>The parent ID is the Rate ID for the Current record. </summary>
    [HiddenInput(DisplayValue = false)]
    public int ParentID { get; set; }

    /// <summary>The parent Type ID is the Type ID for the Current record. </summary>
    [HiddenInput (DisplayValue= false)]
    public int ParentTypeID { get; set; }

    [HiddenInput(DisplayValue = false)]
    public string ParentTypeDescription { get; set; }

    /// <summary>Rate ID for current record, may be null if adding new rate. </summary>
    [HiddenInput(DisplayValue = false)]
    public int? RateID { get; set; }

    /// <summary>Percentage VAT Rate to 2 decimal places. </summary>
    [DisplayName("VAT Rate (%)")]
    [Required(ErrorMessage ="Please Supply VAT Rate as percentage value")]
    [Range(typeof(Decimal), "0","100")]
    public decimal RateValue { get; set; }

    /// <summary>Start date from which this VAT Rate will be active, the start date will also be
    /// the same value for the previous records End Date to ensure there are no gaps in the Rate.</summary>
    [DisplayName("VAT Rate Start Date")]
    [DataType(DataType.Date)]
    [Required(ErrorMessage="Please Supply Start date from which this VAT rate will become active")]
    public DateTime? StartDate { get; set; }

}

继承人控制器方法......

  [ActionName("Edit")]
    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Edit(string button, RateControlEditViewModel model)
    { // Do Stuff here 
    }

我的问题是传递给控制器的对象“RateControlEditViewModel模型”丢失了一些值...... 基本上屏幕应显示对象列表，当您单击“编辑”时，应打开一个新视图，显示您单击的1个对象以允许您编辑它 - 但它会丢失值。救命啊！

Answer 1

确定，似乎如果您使用“DisplayFor”，则不会填充模型属性。使用下面的示例，我收到的控制器值是“HiddenFor”对象中的值，而不是“DisplayFor”中的值。

<%=Html.HiddenFor(Model => Model.ParentID)%>
<%=Html.HiddenFor(Model => Model.ParentTypeID)%>
<%=Html.HiddenFor(Model => Model.ParentTypeDescription)%>
<%=Html.HiddenFor(Model => Model.RateID)%>
<div >
    <%=Html.LabelFor(Model => Model.RateValue)%>
    <%=Html.DisplayFor(Model => Model.RateValue) %>
</div>

<div>
    <%=Html.LabelFor(Model => Model.StartDate)%>
    <%=Html.DisplayFor(Model => Model.StartDate, new { @class = "date" })%>
</div>

要解决此问题，我只为其他2个属性添加了“HiddenFor”：）

<%=Html.HiddenFor(Model => Model.RateValue)%>
<%=Html.HiddenFor(Model => Model.StartDate)%>

简单我认为 - 希望它可以帮助别人。

查看强类型以查看模型，而不是在回发时将模型返回到控制器

1 个答案: