C# 主键mvc实体框架模型错误
这个快把我逼疯了 我有一个包含多个列和一个主键(bigint,而不是null)的表 我已经创建了一个模型C# 主键mvc实体框架模型错误,c#,sql,asp.net-mvc,entity-framework,ef-database-first,C#,Sql,Asp.net Mvc,Entity Framework,Ef Database First,这个快把我逼疯了 我有一个包含多个列和一个主键(bigint,而不是null)的表 我已经创建了一个模型 public long ParcelRangeID { get; set; } .. .. 然后创建控制器和视图。当我使用Create视图创建新记录时,在db.SaveChanges上,问题开始:(我已将该字段作为HiddenFor包含在视图中) 没有进一步的变化;我得到的所需ID丢失错误。(当我使用DataAnnotations[Key],[DatabaseGeneratedAttri
public long ParcelRangeID { get; set; }
..
..
然后创建控制器和视图。当我使用Create视图创建新记录时,在db.SaveChanges上,问题开始:(我已将该字段作为HiddenFor包含在视图中)
- 没有进一步的变化;我得到的所需ID丢失错误。(当我使用DataAnnotations
,[Key]
和[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
[HiddenInput(DisplayValue=false)]
- 当我使用
时,我得到了DbUpdateConcurrencyException[Bind(Exclude=“ParcelRangeID”)]
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create(ParcelRange parcelrange)
{
if (ModelState.IsValid)
{
db.ParcelRange.Add(parcelrange);
db.SaveChanges();
return RedirectToAction("Index");
}
return View(parcelrange);
}
模型:
public partial class ParcelRange
{
public ParcelRange()
{
this.PickupAddressID = -1;
this.OrganizationID = -1;
this.DepotID = -1;
this.IsVTG = 0;
this.IsInternal = 0;
this.IsInterCompany = 0;
this.UpdateCount = 0;
this.IsActive = 1;
this.Modified = DateTime.Now.Date;
this.Created = DateTime.Now.Date;
this.ValidFrom = DateTime.Now.Date;
this.ValidTo = DateTime.MaxValue;
}
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
[Key]
[HiddenInput(DisplayValue = false)]
public long ParcelRangeID { get; set; }
public long NdswCustomerID { get; set; }
public long PickupAddressID { get; set; }
public long OrganizationID { get; set; }
public long DepotID { get; set; }
public string ParcelRangePrefix { get; set; }
public string ParcelNumberStart { get; set; }
public string ParcelNumberEnd { get; set; }
public byte IsVTG { get; set; }
public byte IsInternal { get; set; }
public byte IsInterCompany { get; set; }
public byte[] RowVer { get; set; }
public System.DateTime Created { get; set; }
public System.DateTime Modified { get; set; }
public int UpdateCount { get; set; }
public System.DateTime ValidFrom { get; set; }
public System.DateTime ValidTo { get; set; }
public byte IsActive { get; set; }
}
编辑(2)
最后是自动生成的(默认)视图
@model MvcApplication1.ParcelRange
@{
ViewBag.Title = "Create";
}
<h2>Create</h2>
@using (Html.BeginForm()) {
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
@Html.HiddenFor(model => model.ParcelRangeID)
<fieldset>
<legend>ParcelRange</legend>
<div class="editor-label">
@Html.LabelFor(model => model.NdswCustomerID)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.NdswCustomerID)
@Html.ValidationMessageFor(model => model.NdswCustomerID)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.PickupAddressID)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.PickupAddressID)
@Html.ValidationMessageFor(model => model.PickupAddressID)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.OrganizationID)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.OrganizationID)
@Html.ValidationMessageFor(model => model.OrganizationID)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.DepotID)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.DepotID)
@Html.ValidationMessageFor(model => model.DepotID)
</div>
@* <div class="editor-label">
@Html.LabelFor(model => model.ParcelRangePrefix)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.ParcelRangePrefix)
@Html.ValidationMessageFor(model => model.ParcelRangePrefix)
</div>*@
<div class="editor-label">
@Html.LabelFor(model => model.ParcelNumberStart)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.ParcelNumberStart)
@Html.ValidationMessageFor(model => model.ParcelNumberStart)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.ParcelNumberEnd)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.ParcelNumberEnd)
@Html.ValidationMessageFor(model => model.ParcelNumberEnd)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.IsVTG)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.IsVTG)
@Html.ValidationMessageFor(model => model.IsVTG)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.IsInternal)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.IsInternal)
@Html.ValidationMessageFor(model => model.IsInternal)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.IsInterCompany)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.IsInterCompany)
@Html.ValidationMessageFor(model => model.IsInterCompany)
</div>
@* <div class="editor-label">
@Html.LabelFor(model => model.Created)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Created)
@Html.ValidationMessageFor(model => model.Created)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.Modified)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Modified)
@Html.ValidationMessageFor(model => model.Modified)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.UpdateCount)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.UpdateCount)
@Html.ValidationMessageFor(model => model.UpdateCount)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.ValidFrom)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.ValidFrom)
@Html.ValidationMessageFor(model => model.ValidFrom)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.ValidTo)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.ValidTo)
@Html.ValidationMessageFor(model => model.ValidTo)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.IsActive)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.IsActive)
@Html.ValidationMessageFor(model => model.IsActive)
</div>*@
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
编辑(4)
我正在使用Entity Framework 5.0,将尝试更新到更高版本
编辑(5)
更新至EF 6.1,相同问题
这是我的连接字符串:
metadata=res://*/Model1.csdl|res://*/Model1.ssdl|res://*/Model1.msl;provider=System.Data.SqlClient;provider connection string="data source=XXX.XXX.XXX.XXX\DEV;initial catalog=DPDCDB_ODS;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient
“(我已将视图中的字段包含为HiddenFor)”
由于它是数据库生成的主键,因此在create
视图中,它没有初始值,您不应该使用HiddenFor
来保存该属性。只需删除该HiddenFor
如果使用脚手架向导创建EF控制器,则应注意,create
视图中从不存在主键
更新:
我获取了提供的表脚本,创建了一个数据库,将其导出到Azure,创建了一个VS 2013 MVC web应用程序,然后为表创建了基于EF模型的控制器和视图。然后我将其发布到Azure,它运行得很好(做得好,Microsoft,让我们看看有人在5分钟内使用Amazon S3做到这一点!):)。我怀疑它是您的某个库的版本(可能是EF版本)。否则,这可能是web应用程序上其他数据库活动的副作用。当我向我们的DBA提出这个问题时,他立即为我指出了正确的方向 此特定表上有触发器…..这些触发器导致DBUpdateConcurrencyException。我们禁用了这些触发器,插入进行得很顺利 我们现在必须了解如何模仿C#中的触发器,或者使用STP使用EF更新/插入记录
谢谢你的支持 你能发布你的控制器代码吗?或者调用db.SaveChanges()的部分?发布整个ParcelRange模型。是否可以发布视图代码?我觉得模型绑定没有正确完成。StoreGeneratedPattern:Identity。从数据库更新我已经尝试过好几次了。刚才尝试过了,结果在db.SaveChanges()上出现了DBUpdateConcurrencyException;(删除了HiddenFor btw的完整代码行)对于一个干净的项目,只有我创建了一个新控制器和视图的模型(ParcelRangeClass)(下一个完成)和agian,还有DBUpdateConcurrencyException。备注:该类有一些字段表示一些计算字段(DateTime由数据库插入),并且数据库中有一些约束(默认值),因此我在ParcelRange类构造函数中添加了默认部分作为测试。@Rob Joosen:我已获取了您的表,创建了一个数据库(在Azure上),创建了一个新的MVC项目,一个带有视图和
create
的EF模型运行良好。你用的是什么版本的EF?有多酷。。。我现在没有可用的环境,但明天(CET)将检查。非常感谢您的努力!
metadata=res://*/Model1.csdl|res://*/Model1.ssdl|res://*/Model1.msl;provider=System.Data.SqlClient;provider connection string="data source=XXX.XXX.XXX.XXX\DEV;initial catalog=DPDCDB_ODS;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient