在MVC3应用程序中，我有一个具有奇怪行为的实体：“创建”操作正常，但“编辑”操作失败：在提交时，我获取所有字段为空的模型。
我搜索了有关此错误的建议，似乎ViewModel可能是原因，但我看不出我的任何问题。正如我之前所说，创作工作正常！
请帮助，谢谢！
型号：
public partial class tblEmployeur
{
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredUserIDMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "UserIDDisplay")]
public System.Guid userID { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredNomMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "NomDisplay")]
public string nom { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredTypeSocMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "TypeSocDisplay")]
public string type_soc { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredCodeRCMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "CodeRCDisplay")]
public string codeRC { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "AdresseDisplay")]
public string adresse { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredVilleMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "VilleDisplay")]
public string ville { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredWilayaMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "WilayaDisplay")]
public int wilaya { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "Tel1Display")]
public string tel1 { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "Tel2Display")]
public string tel2 { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "FaxDisplay")]
public string fax { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredEmailMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "EmailDisplay")]
public string email { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "SiteWebDisplay")]
public string site_web { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredBanqueMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "BanqueDisplay")]
public string banque { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredAgenceMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "AgenceDisplay")]
public string agence { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredCompteMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "CompteDisplay")]
public string nr_compte { get; set; }
[Required(ErrorMessageResourceType = typeof(EmployeurResources), ErrorMessageResourceName = "RequiredDomaineMessage")]
[Display(ResourceType = typeof(EmployeurResources), Name = "DomaineDisplay")]
public int domaine { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "NotesDisplay")]
public string notes { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "LogoPetitDisplay")]
public byte[] logo_petit { get; set; }
[Display(ResourceType = typeof(EmployeurResources), Name = "LogoGrandDisplay")]
public byte[] logo_grand { get; set; }
}
视图模型：
public class EmployeurFormViewModel
{
// Properties
public tblEmployeur employeur { get; private set; }
public SelectList Domaines { get; private set; }
public SelectList Wilayas { get; private set; }
public SelectList TypesSocietes { get; private set; }
public string ActionToPerform { get; private set; }
// Constructor
public EmployeurFormViewModel(tblEmployeur unEmployeur, Guid employeurID, SelectList domList, SelectList Wils, SelectList typesSocsList)
{
employeur = unEmployeur;
Domaines = domList;
Wilayas = Wils;
TypesSocietes = typesSocsList;
if (String.IsNullOrEmpty(unEmployeur.userID.ToString())||(string.Compare(unEmployeur.userID.ToString(), "00000000-0000-0000-0000-000000000000")==0))
{
unEmployeur.userID = employeurID;
ActionToPerform = "Create";
}
else
{
ActionToPerform = "Edit";
}
}
}
控制器：
[Authorize(Roles = "Employeur")]
public ActionResult Create(Guid id)
{
tblEmployeur employeur = new tblEmployeur();
SelectList domainesList = new SelectList(db.tblDomaines, "domaine_ID", "domaine");
SelectList wilsList = new SelectList(db.tblWilayas, "wilaya_ID", "wilaya");
SelectList typesSocList = new SelectList(typesSocRepository.GetAll());
return View("Create", new EmployeurFormViewModel(employeur, id, domainesList, wilsList, typesSocList));
}
//
// POST: /Employeur/Create
[HttpPost, Authorize(Roles = "Employeur")]
public ActionResult Create(tblEmployeur employeur, Guid id)
{
SelectList domainesList = new SelectList(db.tblDomaines, "domaine_ID", "domaine", employeur.domaine);
SelectList wilsList = new SelectList(db.tblWilayas, "wilaya_ID", "wilaya");
SelectList typesSocList = new SelectList(typesSocRepository.GetAll(), employeur.type_soc);
IEnumerable<System.Data.Entity.Validation.DbEntityValidationResult> validationResultsColl = db.GetValidationErrors();
foreach (var validationResults in validationResultsColl)
{
foreach (var error in validationResults.ValidationErrors)
{
ModelState.AddModelError(error.PropertyName, new Exception(error.ErrorMessage));
}
}
if (ModelState.IsValid)
{
try
{
repository.Add(employeur);
repository.Save();
return RedirectToAction("Details");
}
catch (System.Data.Entity.Validation.DbEntityValidationException dbEx)
{
foreach (var validationErrors in dbEx.EntityValidationErrors)
{
foreach (var validationError in validationErrors.ValidationErrors)
{
ModelState.AddModelError(validationError.PropertyName, new Exception(validationError.ErrorMessage));
}
}
}
catch (Exception ex)
{
ModelState.AddOtherError(ex);
}
}
return View("Create", new EmployeurFormViewModel(employeur, id, domainesList, wilsList, typesSocList));
}
//
// GET: /Employeur/Edit/5
public ActionResult Edit(Guid id)
{
tblEmployeur employeurCrt = db.tblEmployeurs.Find(id);
SelectList domainesList = new SelectList(db.tblDomaines, "domaine_ID", "domaine", employeurCrt.domaine);
SelectList wilsList = new SelectList(db.tblWilayas, "wilaya_ID", "wilaya", employeurCrt.wilaya);
SelectList typesSocList = new SelectList(typesSocRepository.GetAll(), employeurCrt.type_soc);
return View("Edit", new EmployeurFormViewModel(employeurCrt, id, domainesList, wilsList, typesSocList));
}
//
// POST: /Employeur/Edit/5
[HttpPost]
public ActionResult Edit(tblEmployeur employeurCrt)
{
SelectList domainesList = new SelectList(db.tblDomaines, "domaine_ID", "domaine", employeurCrt.domaine);
SelectList wilsList = new SelectList(db.tblWilayas, "wilaya_ID", "wilaya", employeurCrt.wilaya);
SelectList typesSocList = new SelectList(typesSocRepository.GetAll(), employeurCrt.type_soc);
IEnumerable<System.Data.Entity.Validation.DbEntityValidationResult> validationResultsColl = db.GetValidationErrors();
foreach (var validationResults in validationResultsColl)
{
foreach (var error in validationResults.ValidationErrors)
{
ModelState.AddModelError(error.PropertyName, new Exception(error.ErrorMessage));
}
}
if (ModelState.IsValid)
{
try
{
repository.Update(employeurCrt);
repository.Save();
return RedirectToAction("Details");
}
catch (System.Data.Entity.Validation.DbEntityValidationException dbEx)
{
foreach (var validationErrors in dbEx.EntityValidationErrors)
{
foreach (var validationError in validationErrors.ValidationErrors)
{
ModelState.AddModelError(validationError.PropertyName, new Exception(validationError.ErrorMessage));
}
}
}
catch (Exception ex)
{
ModelState.AddOtherError(ex);
}
}
return View("Edit", new EmployeurFormViewModel(employeurCrt, employeurCrt.userID, domainesList, wilsList, typesSocList));
}
修改视图：
@model MyApp.ViewModels.EmployeurFormViewModel
@{
ViewBag.Title = "Update employeur";
}
<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
<div class="text">
<h1>
Gestion du compte employeur</h1>
<div style="height: 5px">
</div>
@using (Html.BeginForm())
{
@Html.ValidationSummary(false, "Sauvegarde échouée. Veuillez corriger les erreurs et réessayer.")
<p>@Html.ValidationMessage("_FORM")</p>
<div class="validation-summary-errors">
<span></span>
<ul>
</ul>
</div>
<fieldset style="width: 800px; line-height: 1.8em;">
<legend>Update</legend>
<table style="width: 100%; padding-bottom: 0; padding-top: 0; border: 1">
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.nom)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.nom, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.nom, "*")
@Html.HiddenFor(model => model.employeur.userID, new { @class = "input_txt_nofloat" })
@Html.DropDownList("employeur.type_soc", Model.TypesSocietes)
@Html.ValidationMessageFor(model => model.employeur.type_soc, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.codeRC)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.codeRC, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.codeRC, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.adresse)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.adresse, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.adresse, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.ville)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.ville, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.ville, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.wilaya)
</td>
<td style="border: 0;">
@Html.DropDownList("employeur.wilaya", Model.Wilayas, "Indiquez la wilaya", new { @style = "width: 232px;" })
@Html.ValidationMessageFor(model => model.employeur.wilaya)
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.tel1)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.tel1, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.tel1, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.tel2)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.tel2, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.tel2, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.fax)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.fax, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.fax, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.email)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.email, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.email, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.site_web)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.site_web, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.site_web, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.banque)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.banque, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.banque, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.agence)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.agence, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.agence, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.nr_compte)
</td>
<td style="border: 0;">
@Html.TextBoxFor(model => model.employeur.nr_compte, new { @class = "input_txt_nofloat" })
@Html.ValidationMessageFor(model => model.employeur.nr_compte, "*")
</td>
</tr>
<tr style="padding: 0 0 0 0; height: 32px">
<td style="width: 180px; border: 0;">
@Html.LabelFor(model => model.employeur.domaine)
</td>
<td style="border: 0;">
@Html.DropDownList("employeur.domaine", Model.Domaines, "Indiquez le domaine", new { @style = "width: 232px;" })
@Html.ValidationMessageFor(model => model.employeur.domaine, "*")
</td>
</tr>
<tr>
<td style="width: 180px; height: 60px; border: 0;">
</td>
<td style="border: 0;">
<input type="submit" value="Sauvegarder" class="submit" />
</td>
</tr>
</table>
</fieldset>
}
<div>
@Html.ActionLink("Return", "Employeurs", "Home", null, new { @class = "link_no_underline" })
</div>
</div>
答案 0 :(得分：5)
在视图中，您指定要绑定的模型为EmployeurFormViewModel：
@model MyApp.ViewModels.EmployeurFormViewModel
但是，在您的控制器操作中，您指定：
[HttpPost]
public ActionResult Edit(tblEmployeur employeurCrt)
因此，我相信您需要在视图中指定：
@model [YOUR-NAMESPACE-HERE].tblEmployeur
然后在视图中引用模型的所有地方（例如）它将是model.wilaya而不是model.employeur.wilaya等。
您还需要更改以下内容的定义：
public tblEmployeur employeur { get; private set; }
为：
public tblEmployeur employeur { get; set; }
这样它可以由默认的模型绑定器设置，而不仅仅是由构造函数设置。
希望这有帮助。
答案 1 :(得分：1)
我回答问题的答案： 为什么“创建”操作正常，编辑没有：
查看型号：
public tblEmployeur employeur { get; private set; }
创建HttpPost操作：
public ActionResult Create(tblEmployeur **employeur**, Guid id)
编辑HttpPost操作：
public ActionResult Edit(tblEmployeur **employeurCrt**)
Create action参数的名称与ViewModel中属性的名称相同，而在Edit操作中名称则不同。
总之，以下两种解决方案都具有功能性：
：
public ActionResult Edit(tblEmployeur **employeur**)
或：
public ActionResult Edit(EmployeurFormViewModel model)
{
tblEmployeur employeurCrt = model.employeur;
...
（并为视图模型定义无参数构造函数）。
感谢Dangerous，希望这对其他人也有帮助。