问题描述
我在使用 ModelState 时遇到问题。 我使用控制器来显示列表、编辑和创建元素。 我使用局部视图进行创建和编辑。在索引视图上
我的索引视图使用视图模型（包含我的模型和所选模型的列表） 我的问题是我想在我的部分视图中显示验证错误。
Recordersviewmodel.cs
public class Recordersviewmodel
{
public List<MapRecorders> Recorders { get; set; }
public MapRecorders SelectedRecorder { get; set; }
public string displayMode { get; set; }
}
MapRecorders（表数据库）
public partial class MapRecorders
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage","CA2214:DoNotCalloverridableMethodsInConstructors")]
public MapRecorders()
{
this.Timers = new HashSet<Timers>();
}
[Key]
[display(Name = "Id")]
public int MapRecordersID { get; set; }
[display(Name = "Nom")]
[required(ErrorMessage = "Le nom est obligatoire.")]
public string Name { get; set; }
}
recordersController.cs
public ActionResult Index()
{
using (ScheduleRecDBEntities db = new ScheduleRecDBEntities())
{
List<MapRecordingtypes> recodersTypesModel = db.MapRecordingtypes.ToList();
ViewData["RecordingTypeList"] = recodersTypesModel.Select(x => new SelectListItem { Value = x.MapRecordingtypesID.ToString(),Text = x.Name });
Recordersviewmodel model = new Recordersviewmodel();
model.Recorders = db.MapRecorders.OrderBy(m => m.MapRecordersID).ToList();
model.SelectedRecorder = null;
return View(model);
}
}
[HttpPost]
public ActionResult Add()
{
using (ScheduleRecDBEntities db = new ScheduleRecDBEntities())
{
List<MapRecordingtypes> recodersTypesModel = db.MapRecordingtypes.ToList();
ViewData["RecordingTypeList"] = recodersTypesModel.Select(x => new SelectListItem { Value = x.MapRecordingtypesID.ToString(),Text = x.Name });
Recordersviewmodel model = new Recordersviewmodel();
model.Recorders = db.MapRecorders.OrderBy(
m => m.MapRecordersID).ToList();
model.SelectedRecorder = null;
model.displayMode = "writeonly";
return View("Index",model);
}
}
[HttpPost]
public ActionResult Edit(int id)
{
using (ScheduleRecDBEntities db = new ScheduleRecDBEntities())
{
List<MapRecordingtypes> recodersTypesModel = db.MapRecordingtypes.ToList();
ViewData["RecordingTypeList"] = recodersTypesModel.Select(x => new SelectListItem { Value = x.MapRecordingtypesID.ToString(),Text = x.Name });
Recordersviewmodel model = new Recordersviewmodel();
model.Recorders = db.MapRecorders.OrderBy(
m => m.MapRecordersID).ToList();
model.SelectedRecorder = db.MapRecorders.Find(id);
model.displayMode = "ReadWrite";
return View("Index",model);
}
}
[HttpPost]
public ActionResult Save(MapRecorders obj)
{
using (ScheduleRecDBEntities db = new ScheduleRecDBEntities())
{
MapRecorders existing = db.MapRecorders.Find(obj.MapRecordersID);
if (existing == null)
{
obj.Active =
Convert.ToByte(Request.Form["Active"]
.ToString()); //Request.Form["Active"].ToString() == "false" ? 0 : 1;
db.MapRecorders.Add(obj);
}
else
{
existing.Name = obj.Name;
existing.Link = obj.Link;
existing.LinkBackup = obj.LinkBackup;
existing.MapRecordingTypesID = obj.MapRecordingTypesID;
existing.Active =
Convert.ToByte(Request.Form["Active"]
.ToString()); //Request.Form["Active"].ToString() == "false" ? 0 : 1;
}
db.SaveChanges();
Recordersviewmodel model = new Recordersviewmodel();
model.Recorders = db.MapRecorders.OrderBy(
m => m.MapRecordersID).ToList();
return RedirectToAction("Index","Recorders");
}
}
index.cshtml
@model ScheduleRecordings.Models.Recordersviewmodel
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<div class="row">
<div class="col-lg-12 col-sm-12 float-left btn-list titlebar">
<h1>Liste des décodeurs</h1>
<form method="post">
<input class="btn btn-default" type="submit"
value="Ajouter" formaction="/Recorders/Add" />
</form>
</div>
<div class="col-lg-6 col-sm-12 float-left" style="margin-bottom: 15px;">
<form method="post">
<table class="table-list" border="1" cellpadding="10">
<tr>
<th>@Html.LabelFor(m => m.SelectedRecorder.MapRecordersID)</th>
<th>@Html.LabelFor(m => m.SelectedRecorder.Name)</th>
<th>@Html.LabelFor(m => m.SelectedRecorder.Link)</th>
<th>@Html.LabelFor(m => m.SelectedRecorder.LinkBackup)</th>
<th>@Html.LabelFor(m => m.SelectedRecorder.MapRecordingtypes.Name)</th>
<th>@Html.LabelFor(m => m.SelectedRecorder.Active)</th>
<th></th>
</tr>
@foreach (var item in Model.Recorders)
{
if (Model.SelectedRecorder != null)
{
if (item.MapRecordersID ==
Model.SelectedRecorder.MapRecordersID)
{
@:<tr class="SelectedRecorder">
}
else
{
@:<tr>
}
}
else
{
@:<tr>
}
<td>@item.MapRecordersID</td>
<td>@item.Name</td>
<td><a target="_blank" href="http://@item.Link">@item.Link</a></td>
<td><a target="_blank" href="http://@item.LinkBackup">@item.LinkBackup</a></td>
<td>@item.MapRecordingtypes.Name</td>
<td>@Html.CheckBox("Active_" + @item.MapRecordersID.ToString(),Convert.ToBoolean(@item.Active),new { @disabled = "disabled" })</td>
<td>
<input type="submit"
formaction="/Recorders/Edit/@item.MapRecordersID"
value="Editer" />
</td>
@:</tr>
}
</table>
</form>
</div>
<div class="col-lg-6 col-sm-12 float-left">
@{
if (Model.SelectedRecorder != null)
{
if (Model.displayMode == "ReadOnly")
{
Html.RenderPartial
("ShowRecorder",Model.SelectedRecorder);
}
if (Model.displayMode == "ReadWrite")
{
Html.RenderPartial
("EditRecorder",Model.SelectedRecorder);
}
}
if (Model.displayMode == "writeonly")
{
Html.RenderPartial("InsertRecorder",new ScheduleRecordings.Models.MapRecorders());
}
}
</div>
</div>
插入记录器.cshtml
@using ScheduleRecordings.Models
@model ScheduleRecordings.Models.MapRecorders
@using (Html.BeginForm("Insert","Recorders",FormMethod.Post))
{
<table class="table-info" border="1" cellpadding="10">
<tr>
<td colspan="2">
<span>Ajouter</span>
</td>
</tr>
<tr>
<td>@Html.LabelFor(m => m.Name)</td>
<td>@Html.TextBoxFor(m => m.Name,new { @autofocus = "autofocus" })</td>
</tr>
<tr>
<td>@Html.LabelFor(m => m.Link)</td>
<td>@Html.TextBoxFor(m => m.Link)</td>
</tr>
<tr>
<td>@Html.LabelFor(m => m.LinkBackup)</td>
<td>@Html.TextBoxFor(m => m.LinkBackup)</td>
</tr>
<tr>
<td>@Html.LabelFor(m => m.MapRecordingtypes.Name)</td>
<td>@Html.DropDownListFor(m => m.MapRecordingTypesID,(IEnumerable<SelectListItem>)ViewData["RecordingTypeList"],"[Type]",new { @class = "form-control" })</td>
</tr>
<tr>
<td>@Html.LabelFor(m => m.Active)</td>
<td>@Html.CheckBox("Active",Convert.ToBoolean(Model.Active))</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Sauvegarder"
formaction="/Recorders/Save" />
<input type="submit" value="Annuler"
formaction="/Recorders" />
</td>
</tr>
</table>
<div>
@Html.ValidationMessageFor(m => m.Name,"",new { @class = "text-danger" })
@Html.ValidationMessageFor(m => m.Link,new { @class = "text-danger" })
@Html.ValidationMessageFor(m => m.LinkBackup,new { @class = "text-danger" })
</div>
}
解决方法
根据我对问题的理解：
1:) 在 save 方法中使用 ModeState.IsValid 属性。为此只需使用
If(ModelState.IsValid)
{
//Save Code
}
else
{
//Do Something
}
2:) 您需要将验证消息添加到您的 ViewModel，并且还需要向 Partial View 添加验证消息辅助方法。就像在给定的参考中一样显示错误消息。
链接：- https://forums.asp.net/post/6080694.aspx
编辑 将这种类型的验证添加到您的 ViewModel
[StringLength(2000,ErrorMessage = "The Description Can Not Exceed 2000 Characters")]
并在局部视图中添加这种类型的验证辅助方法
@Html.ValidationMessageFor(model => model.DisplayMode,"",new { @class = "text-danger" })
我找到了我的解决方案。
我只是忘记调用validation.js 脚本...
@Scripts.Render("~/bundles/jqueryval")