Question

我对MVC非常非常新，所以请忍受我的问题，我必须使用以下结构。我有以下型号，设施和地址。 Facility包含一个SortedList of Address，为了清晰起见，我减少了属性数量，

public class AppFacility
{
    public AppFacility()
    {
        this.Addresses = new SortedList<string, AppAddress>();
    }

    public SortedList<string, AppAddress> Addresses { get; set; }

    [DisplayNameAttribute("Facility ID")]
    public int FacilityID { get; set; }

    [Required(ErrorMessage = "Facility Name is a required field")]
    [DisplayNameAttribute("Facility Name")]
    public string FacilityName { get; set; }

    [DisplayNameAttribute("Doing Business As")]
    public string Dba { get; set; }

    [DisplayNameAttribute("Nbr. Of Employees")]
    public int NbrOfEmployees { get; set; }
}

public class AppAddress
{
    [DisplayNameAttribute("City")]
    public string City { get; set; }

    [DisplayNameAttribute("State")]
    public string State { get; set; }

    [DisplayNameAttribute("Street Name")]
    public string StreetName { get; set; }
 }

控制器：

[HttpPost]        
    public ActionResult FacilityCreate(AppFacility objFacility)
    {
        facilityManager = new Manager.AppFacilityManager();

            if (facilityManager.InsertAppFacility(objFacility))
            {
                return RedirectToAction("FacilityInfo", new { id = objFacility.FacilityID });
            }

        return View((AppFacility)Session["FacilityObject"]);
    }

查看： FacilityCreate

@model Model.CORE.BO.AppFacility
<table width="100%" align="center" border="0" class="SectionTables">
<tr>
    <td class="SubtitleHeader">
        Facility
    </td>
</tr>
<tr>
    <td class="SubtitleHeader1">
        Enter Facility Information
    </td>
</tr>
<tr>
    <td align="center">
        @Html.Partial(p_CreateEditAppFacility, Model)         
    </td>         
</tr>

部分观点： p_CreateEditAppFacility：这也包含p_CreateEditAddress局部视图。

@model Model.CORE.BO.AppFacility 
@using (Html.BeginForm("FacilityCreate", "Form", FormMethod.Post, 
new { id = "saveForm",     name = "saveForm" }))
{      
@Html.ValidationSummary(true)
<div class="main">
    <fieldset>
        <legend>Operator Information</legend>
        <div class="editor-label">
            @Html.Label("Facility Name (Business Name of Operator to Appear): ")
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.FacilityName)
            @Html.ValidationMessageFor(model => model.FacilityName)
        </div>
        <div class="editor-label">
            @Html.Label("Owner's Business Name (If different from Business Name of Operator): ")
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Dba)
            @Html.ValidationMessageFor(model => model.Dba) 
        </div>
        <div class="editor-label">
            @Html.Label("No of Employees:")
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.NbrOfEmployees)
            @Html.ValidationMessageFor(model => model.NbrOfEmployees)
        </div>
    </fieldset>

    <fieldset>
        <legend>Address Information</legend> 
       @{ 
int i = 0;
foreach (KeyValuePair<string, Model.CORE.BO.AppAddress> addressRow in Model.Addresses)
{

        <div class="editor-field">
        @Html.Partial(p_CreateEditAddress, addressRow.Value, new ViewDataDictionary(Html.ViewDataContainer.ViewData) { TemplateInfo = new System.Web.Mvc.TemplateInfo { HtmlFieldPrefix = string.Format("objFacility.Addresses[{0}]", i) } })       
        </div>
    i++;
}
    }
  </fieldset>

    <p>            
        <input id="SaveFacility" name="SaveInfo" type="submit" value="Save Information" />
    </p>
</div>

}

PartialView： p_CreateEditAddress

@model Model.CORE.BO.AppAddress
@Html.ValidationSummary(true)

<div class="editor-label">
    @Html.LabelFor(model => model.StreetName)
</div>
<div class="editor-field">
    @Html.EditorFor(model => model.StreetName)
    @Html.ValidationMessageFor(model => model.StreetName)
</div>
<div class="editor-label">
    @Html.LabelFor(model => model.City)
</div>
<div class="editor-field">
    @Html.EditorFor(model => model.City)
    @Html.ValidationMessageFor(model => model.City)
</div>
<div class="editor-label">
    @Html.LabelFor(model => model.State)
</div>
<div class="editor-field">
    @Html.EditorFor(model => model.State)
    @Html.ValidationMessageFor(model => model.State)
</div>

我的问题是，在Controller中，objFacility.Addresses没有获得为模型AppAddress输入的值，它始终为null。然而，AppFacility已经填充。 p_CreateEditAddress

后面的html看起来像这样

<div class="editor-field">
    <input class="text-box single-line" 
id="objFacility_Addresses_0__StreetName"  
name="objFacility.Addresses[0].StreetName" type="text" value="" />
    <span class="field-validation-valid" 
data-valmsg-for="objFacility.Addresses[0].StreetName" data-valmsg-replace="true"></span>
</div>

请帮忙。

Answer 1

我猜生成的HTML不适合模型绑定。

不应该是objFacility.Addresses[0].StreetName而是Addresses[0].StreetName。

Answer 2

您只需更改部分视图通话即可获取正确的前缀。您没有为其指定模型名称，因为默认模型绑定器将创建类的实例并查找与Request.Form集合中的项名称匹配的字段。它对您为模型赋予的变量名称一无所知，只知道模型类的属性。

试试这个（为了便于阅读，我设置了换行符）：

@Html.Partial(p_CreateEditAddress, addressRow.Value,
    new ViewDataDictionary(Html.ViewDataContainer.ViewData) {
        TemplateInfo = new System.Web.Mvc.TemplateInfo { 
            HtmlFieldPrefix = string.Format("Addresses[{0}]", i) 
        } 
    })

部分视图不返回已排序列表的模型

2 个答案: