不包含的定义，也不包含扩展方法
本文关键字：包含 扩展 方法 定义 | 更新日期: 2023-09-27 18:04:09
我得到错误
'Renter'不包含'RenterName'的定义，也没有扩展方法等
但是我的renter类确实包含'RenterName'。有人知道为什么会这样吗?我已经试图解决这个问题，我删除了部分视图并重写了它，但无济于事，它仍然给了我错误。
我班上public class LettingAgent
{
[Key]
public int Agentid { get; set; }
[Required(ErrorMessage = "You Need to Enter A Agent Name ")]
public string AgentName { get; set; }
public string Address { get; set; }
public virtual List<Renter> Renters { get; set; }
}
public class Renter
{
public int Renterid { get; set; }
public string RenterName { get; set; }
[DataType(DataType.Date), DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}")]
public DateTime DOB { get; set; }
public int Agentid { get; set; }
public virtual LettingAgent LettingAgent { get; set; }
}
public class LandLordDb : DbContext
{
public DbSet<LettingAgent> LettingAgents { get; set; }
public DbSet<Renter> Renters { get; set; }
public LandLordDb() : base("LandLordDb") { }
}
你可以看到Renter类有一个字符串RenterName。
部分视图如下
@model IEnumerable<RealEstate.Models.Renter>
@if (Model.Any())
{
<table id="ActorTable" class="table table-condensed table-striped"
style="table-layout:fixed; margin-bottom: 0px">
<tr>
<th colspan="3">
@ViewBag.AgentName
</th>
</tr>
@if (Model != null)
{
foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.RenterName)
</td>
</tr>
}
} @* closing of if *@
</table>
}
else
{<div><strong><mark>No Child registered for @ViewBag.AgentName</mark>
</strong></div>}
这是我的主页索引页，希望它能帮助别人找到我的代码有什么问题。
@model IEnumerable<RealEstate.Models.LettingAgent>
@{
ViewBag.Title = "Index";
}
<h2>Index</h2>
<p>
@Html.ActionLink("Create New", "Create")
</p>
<div class="container">
<h1>Click the filter To Search <small>(<i class="glyphicon glyphicon- filter"></i>)</small></h1>
<div class="row">
<div class="col-md-6">
<div class="panel panel-primary">
<div class="panel-heading">
<h3 class="panel-title">Agents</h3>
<div class="pull-right">
<span class="clickable filter" data-toggle="tooltip" title="Toggle table filter" data-container="body">
<i class="glyphicon glyphicon-filter"></i>
</span>
</div>
</div>
<div class="panel-body">
<input type="text" class="form-control" id="dev-table-filter" data-action="filter" data-filters="#dev-table" placeholder="Filter Developers" />
</div>
<table class="table table-hover" id="dev-table">
<thead>
<tr>
<th>@Html.DisplayNameFor(model => model.AgentName)</th>
<th>@Html.DisplayNameFor(model => model.Address)</th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
<span class="btn btn-xs btn-warning"
onclick="showRenter('@item.Agentid')">@Html.DisplayFor(modelItem => item.AgentName)</span>
</td>
<td>
@Html.DisplayFor(modelItem => item.Address)
</td>
<td>
<span class="btn btn-sm btn-warning" onclick="edit('@item.Agentid','@item.AgentName','@item.Address')">Edit</span>
<span class="btn btn-sm btn-warning" onclick="filmDetails(@item.Agentid)">Details</span>
@Html.ActionLink("Delete", "Delete", new { id = item.Agentid }, new { @class = "btn btn-danger btn-sm" })
</td>
</tr>
}
</tbody>
</table>
</div>
</div>
<div id="Detail" class="col-md-6">
</div>
<div>
<form id="CreateActor" hidden="">
<div id="time" class="form-group" style="margin-top:10px">
<input type="hidden" name="Agentid">
</div>
</form>
</div>
</div>
</div>
@section scripts
{
<script>
$(function () { // ready event
toastr.success('Welcome To The Real Esate DataBase');
toastr.options = {
"progressBar": true,
}
});
function edit(Agentid, AgentName, Address) {
$.ajax({
type: "GET",
url: '@Url.Action("EditAgent")',
data: { id: Agentid },
success: function (data) {
$('#Detail').hide();
$('#Detail').html(data);
$('#Detail').fadeIn("slow")
$('#Detail').find('input[name="Agentid"]').val(Agentid);
$('#Detail').find('input[name="AgentName"]').val(AgentName);
$('#Detail').find('input[name="Address"]').val(Address);
},
error: function (data) {
$('#Details').html('<h3>Error in retrieval</h3>');
}
});
}
function showRenter(Agentid) {
$.ajax({
type: "GET",
url: '@Url.Action("ChildrenInCamp")',
data: { id: Agentid },
success: function (data) {
$('#Detail').hide();
$('#Detail').html(data);
$('#Detail').fadeIn("slow");
$('#CreateActor').find('input[name="Agentid"]').val(Agentid);
$('#CreateActor').find('input[name="RenterName"]').val("");
$('#CreateActor').fadeIn("slow");
},
error: function (data) {
$('#Detail').html('<h3>Error in retrieval</h3>');
}
});
}
和My Controller
public class HomeController : Controller
{
private LandLordDb db = new LandLordDb();
// GET: LettingAgents
public ActionResult Index()
{
return View(db.LettingAgents.ToList());
}
// GET: LettingAgents/Details/5
public ActionResult Details(int? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
LettingAgent lettingAgent = db.LettingAgents.Find(id);
if (lettingAgent == null)
{
return HttpNotFound();
}
return View(lettingAgent);
}
// GET: LettingAgents/Create
public ActionResult Create()
{
return View();
}
// POST: LettingAgents/Create
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "Agentid,AgentName,Address")] LettingAgent lettingAgent)
{
if (ModelState.IsValid)
{
db.LettingAgents.Add(lettingAgent);
db.SaveChanges();
return RedirectToAction("Index");
}
return View(lettingAgent);
}
public PartialViewResult EditAgent(LettingAgent id)
{
var mov = db.LettingAgents.Find(id);
// db.SaveChanges();
return PartialView("_EditAgent", mov);
}
// GET: LettingAgents/Delete/5
public ActionResult Delete(int id)
{
return View(db.LettingAgents.Find(id));
}
// POST: LettingAgents/Delete/5
[HttpPost, ActionName("Delete")]
public ActionResult DeleteConfirmed(int id)
{
db.LettingAgents.Remove(db.LettingAgents.Find(id));
db.SaveChanges();
return RedirectToAction("Index");
}
public PartialViewResult ChildrenInCamp(int id)
{
var act = db.LettingAgents.Find(id);
@ViewBag.Agentid = id;
@ViewBag.AgentName = act.AgentName;
return PartialView("_ChildrenInCamp", act.Renters);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
db.Dispose();
}
base.Dispose(disposing);
}
}
在您的视图中，我看到您绑定到IEnumerable s，但最终试图绑定到它们上的字段，例如:
@model IEnumerable<RealEstate.Models.Renter>
但是绑定看起来像
@Html.DisplayFor(modelItem => item.RenterName)
要使此绑定真正起作用，您需要做如下操作
@Html.DisplayFor(m => m.ToList()[i].RenterName)
以便生成正确的标记来连接事物。我在你的另一个观点中也看到了同样的事情，这可能是导致这个问题的原因。
在foreach段中，您可以尝试将DisplayFor替换为Display
foreach (var item in Model)
{
<tr>
<td>
@Html.Display(item.RenterName)
</td>
</tr>
}
有关DisplayExtensions的更多信息，可以转到https://msdn.microsoft.com/zh-cn/library/system.web.mvc.html.displayextensions(v=vs.118).aspx .