我正在使用MVC 4 EF Code First，我有一个带有编辑视图的对象，它可以正常工作。然后我创建了一个非常相似的创建视图，只有当我点击提交按钮时，我才在控制器中点击任何断点。我怎么知道这里有什么问题？有没有我可以在JavaScript或代码隐藏中设置断点的地方？
模型
public class ThirdParty : BaseModel
{
public Int32 Id { get; set; }
[MaxLength(2)]
private String CountryCode { get; set; }
[MaxLength(6)]
private Int32 SequenceNumber { get; set; }
public String UIN
{
get
{
if (CountryCode != null && SequenceNumber > 0)
return CountryCode.ToString() + "-" + SequenceNumber.ToString();
else
return null;
}
set
{
CountryCode = value.ToString().Substring(0, 2);
SequenceNumber = Int32.Parse(value.ToString().Substring(3, value.Length-3));
}
}
[MaxLength(250)]
[Required(AllowEmptyStrings = false, ErrorMessage = "{0} is required.")]
public String Name { get; set; }
public virtual ICollection<RelationshipType> RelationshipTypes { get; set; }
// Address
public Int32 AddressId { get; set; }
[ForeignKey("AddressId")]
public virtual Address Address { get; set; }
public bool IsImported { get; set; }
public bool IsActive { get; set; }
public virtual ICollection<Attachment> Attachments { get; set; }
// constructor
public ThirdParty()
{
RelationshipTypes = new HashSet<RelationshipType>();
Attachments = new HashSet<Attachment>();
}
}
控制器方法
public ActionResult Edit(int id)
{
ThirdPartyContext context = new ThirdPartyContext();
ThirdParty model = context.ThirdParties.Find(id);
ViewBag.Countries = context.Countries.ToList<Country>();
return View(model);
}
[HttpPost]
public ActionResult Edit(string button, ThirdParty model, int id)
{
if (button == "cancel")
return RedirectToAction("Index");
if (ModelState.IsValid)
{
ThirdPartyContext context = new ThirdPartyContext();
model.Address.Country = context.Countries.Find(model.Address.CountryId);
context.Entry(model.Address.Country).State = EntityState.Modified;
context.Entry(model.Address).State = EntityState.Modified;
context.Entry(model).State = EntityState.Modified;
context.SaveChanges();
Success("Third Party record updated!");
return RedirectToAction("Index");
}
else
{
ThirdPartyContext context = new ThirdPartyContext();
model.Address = context.Addresses.Find(model.AddressId);
return View("Edit", model);
}
}
public ActionResult Create()
{
ThirdPartyContext context = new ThirdPartyContext();
ViewBag.Countries = context.Countries.ToList<Country>();
return View();
}
[HttpPost]
public ActionResult Create(ThirdParty model)
{
if (ModelState.IsValid)
{
ThirdPartyContext context = new ThirdPartyContext();
List<ThirdParty> models = context.ThirdParties.ToList<ThirdParty>();
model.Id = models.Count() == 0 ? 1 : models.Select(x => x.Id).Max() + 1;
context.ThirdParties.Add(model);
context.SaveChanges();
Success("Your information was saved!");
return RedirectToAction("Index");
}
Error("There were some errors in your form.");
return View(model);
}
[HttpPost]
public ActionResult Create(string button, ThirdParty model)
{
if (button == "cancel")
return RedirectToAction("Index");
if (ModelState.IsValid)
{
ThirdPartyContext context = new ThirdPartyContext();
List<ThirdParty> models = context.ThirdParties.ToList<ThirdParty>();
model.Id = models.Count() == 0 ? 1 : models.Select(x => x.Id).Max() + 1;
context.ThirdParties.Add(model);
context.SaveChanges();
Success("Your information was saved!");
return RedirectToAction("Index");
}
Error("There were some errors in your form.");
return View(model);
}
修改视图
@model Models.ThirdParty
@{
ViewBag.Title = "Edit";
Layout = "~/Views/shared/ContentLayout.cshtml";
}
<div class="row">
<div class="col-lg-12">
<div class="page-header">
<h2>Third Party</h2>
</div>
</div>
</div>
<div class="row">
<div class="col-lg-8">
@using (Html.BeginForm("Edit", "ThirdParty", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal" }))
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
<div class="form-group">
@Html.HiddenFor(model => model.Id)
<div class="clearfix visible-xs"></div>
@Html.HiddenFor(model => model.Address.Id)
</div>
<div class="form-group">
@Html.EditorFor(model => model.UIN)
<div class="clearfix visible-xs"></div>
@Html.EditorFor(model => model.Name)
</div>
@Html.HiddenFor(model => model.AddressId)
@Html.Partial("_EditAddress", Model)
@Html.HiddenFor(model => model.CreatedBy)
@Html.HiddenFor(model => model.CreatedOn)
@Html.HiddenFor(model => model.ModifiedBy)
@Html.HiddenFor(model => model.ModifiedOn)
<p>
<button name="button" type="submit" class="btn btn-default" value="cancel">Cancel</button>
<button name="button" type="submit" class="btn btn-primary" value="submit">Submit</button>
</p>
}
</div>
</div>
**创建视图**
@model Models.ThirdParty
@{
ViewBag.Title = "Create";
Layout = "~/Views/shared/ContentLayout.cshtml";
}
<div class="row">
<div class="col-lg-12">
<ul class="breadcrumb" style="margin-bottom: 5px;">
<li><a href="#">Third Parties</a></li>
<li class="active">Create New Third Party</li>
</ul>
</div>
</div>
<div class="row">
<div class="col-lg-12">
<div class="page-header">
<h2>Create Third Party</h2>
</div>
</div>
</div>
<div class="row">
<div class="col-lg-2"> </div>
<div class="col-lg-8">
@using (Html.BeginForm("Create", "ThirdParty", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal" }))
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
@Html.EditorFor(model => model.UIN)
@Html.EditorFor(model => model.Name)
@Html.HiddenFor(model => model.AddressId)
@Html.Partial("_EditAddress", Model)
@Html.HiddenFor(model => model.CreatedBy)
@Html.HiddenFor(model => model.CreatedOn)
@Html.HiddenFor(model => model.ModifiedBy)
@Html.HiddenFor(model => model.ModifiedOn)
<p>
<button name="button" type="submit" class="btn btn-default" value="cancel">Cancel</button>
<input name="button" type="submit" class="btn btn-primary" value="submit" title="Submit" />
<input type="submit" value="Create" />
</p>
}
</div>
<div class="col-lg-2"> </div>
</div>
修改
我可能遗漏了一个关键部分。我在ThirdParty和Address模型上有这四个隐藏字段，我计划在控制器Create方法中设置（如果我可以进入那里）。这是模型：
public class BaseModel
{
[HiddenInput(DisplayValue = false)]
public Int32 CreatedBy { get; set; }
[HiddenInput(DisplayValue = false)]
[DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}", ApplyFormatInEditMode = true)]
public DateTime CreatedOn { get; set; }
[HiddenInput(DisplayValue = false)]
public Int32 ModifiedBy { get; set; }
[HiddenInput(DisplayValue = false)]
[DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}", ApplyFormatInEditMode = true)]
public DateTime ModifiedOn { get; set; }
}
我在想，也许我的观点无效，这也就是为什么它不会将它发送给控制器。以下是页面标记中的内容：
<input data-val="true" data-val-number="The field CreatedBy must be a number." data-val-required="The CreatedBy field is required." id="Address_CreatedBy" name="Address.CreatedBy" type="hidden" value="" />
<input data-val="true" data-val-date="The field CreatedOn must be a date." data-val-required="The CreatedOn field is required." id="Address_CreatedOn" name="Address.CreatedOn" type="hidden" value="" />
<input data-val="true" data-val-number="The field ModifiedBy must be a number." data-val-required="The ModifiedBy field is required." id="Address_ModifiedBy" name="Address.ModifiedBy" type="hidden" value="" />
<input data-val="true" data-val-date="The field ModifiedOn must be a date." data-val-required="The ModifiedOn field is required." id="Address_ModifiedOn" name="Address.ModifiedOn" type="hidden" value="" />
<div class="form-group">
<input data-val="true" data-val-number="The field CreatedBy must be a number." data-val-required="The CreatedBy field is required." id="CreatedBy" name="CreatedBy" type="hidden" value="" />
<input data-val="true" data-val-date="The field CreatedOn must be a date." data-val-required="The CreatedOn field is required." id="CreatedOn" name="CreatedOn" type="hidden" value="" />
<input data-val="true" data-val-number="The field ModifiedBy must be a number." data-val-required="The ModifiedBy field is required." id="ModifiedBy" name="ModifiedBy" type="hidden" value="" />
<input data-val="true" data-val-date="The field ModifiedOn must be a date." data-val-required="The ModifiedOn field is required." id="ModifiedOn" name="ModifiedOn" type="hidden" value="" />
</div>
答案 0 :(得分：1)
如果您的操作被调用，则在操作开始时设置断点并附加到该过程应该可以解决问题。 当您在“创建”页面上单击“提交”时，是否确保从浏览器发送了POST请求？
我没有尝试运行您的代码，但请注意您已经定义了两个具有相同名称的Create操作来处理POST动词。
对于ASP.NET MVC来说，这可能是模棱两可的，因为它无法确定要调用的操作。
此外，您在以下行中定义了ReturnUrl路由值：
@using (Html.BeginForm("Create", "ThirdParty", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal" }))
在您处理POST的操作中似乎没有使用此功能。
为什么你有2个提交按钮，其值为“submit”和“create”？
您可以删除采用额外按钮参数的Create操作并替换标记：
<button name="button" type="submit" class="btn btn-default" value="cancel">Cancel</button>
<input name="button" type="submit" class="btn btn-primary" value="submit" title="Submit" />
<input type="submit" value="Create" />
有类似的东西：
<a class="btn btn-default" href="@Url.Action("Index", "ThirdParty")">Cancel</a>
<input name="button" type="submit" class="btn btn-primary" value="Create" title="Create" />
我邀请您阅读有关ASP.NET MVC路由如何工作的更多documentation。