1
我一直在尋找一些東西。我曾嘗試涉及捕捉OptimisticConcurrency並添加一對夫婦的解決方案：修改數據時出現DbUpdateConcurrencyException
「@ Html.HiddenFor（型號=> model.OrganizationID）」
我刪除頁面。我的索引（列表），創建和編輯頁面就像一個魅力。然而，當我去刪除一行它給了我下面的錯誤：
DbUpdateConcurrencyException
商店更新，插入或刪除語句影響了意外 的行數（0）。自從裝載了實體 以來，實體可能已被修改或刪除。刷新ObjectStateManager條目。
我按照教程構建了數據庫優先應用程序。目前，我只是從我的組織表中引入數據，直到我能夠順利運作。我的組織模式是這樣的（這是自動產生的「添加代碼生成項目」）：
//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated from a template.
//
// Manual changes to this file may cause unexpected behavior in your application.
// Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
namespace VAGTC.Models
{
using System;
using System.Collections.Generic;
public partial class Organization
{
public Organization()
{
this.Contact_Title = new HashSet<Contact_Title>();
this.Organization_Address = new HashSet<Organization_Address>();
this.Organization_Business_Type = new HashSet<Organization_Business_Type>();
this.Organization_Country = new HashSet<Organization_Country>();
this.Organization_Email = new HashSet<Organization_Email>();
this.Organization_Membership = new HashSet<Organization_Membership>();
this.Organization_Notes = new HashSet<Organization_Notes>();
this.Organization_Phone = new HashSet<Organization_Phone>();
this.Organization_Website = new HashSet<Organization_Website>();
this.Contacts = new HashSet<Contact>();
this.Organization_Industry_Code = new HashSet<Organization_Industry_Code>();
}
public int OrganizationID { get; set; }
public string Name { get; set; }
public virtual ICollection<Contact_Title> Contact_Title { get; set; }
public virtual ICollection<Organization_Address> Organization_Address { get; set; }
public virtual ICollection<Organization_Business_Type> Organization_Business_Type { get; set; }
public virtual ICollection<Organization_Country> Organization_Country { get; set; }
public virtual ICollection<Organization_Email> Organization_Email { get; set; }
public virtual ICollection<Organization_Membership> Organization_Membership { get; set; }
public virtual ICollection<Organization_Notes> Organization_Notes { get; set; }
public virtual ICollection<Organization_Phone> Organization_Phone { get; set; }
public virtual ICollection<Organization_Website> Organization_Website { get; set; }
public virtual ICollection<Contact> Contacts { get; set; }
public virtual ICollection<Organization_Industry_Code> Organization_Industry_Code { get; set; }
}
}
這是我的組織控制器刪除的ActionResult：
//
// GET: /Organization/Delete/5
public ActionResult Delete(int id)
{
using (var db = new VAGTCEntities())
{
return View(db.Organizations.Find(id));
}
}
//
// POST: /Organization/Delete/5
[HttpPost]
public ActionResult Delete(int id, Organization organization)
{
try
{
// TODO: Add delete logic here
using (var db = new VAGTCEntities())
{
db.Entry(organization).State = System.Data.EntityState.Deleted;
db.SaveChanges();
}
return RedirectToAction("Index");
}
catch
{
return View();
}
}
和我的索引頁它聲明主鍵：
@ Html.ActionLink（ 「刪除」， 「刪除」，新的{ID = item.OrganizationID}）
出於好奇我決定嘗試添加
「@ Html.HiddenFor（型號=> model.OrganizationID）」
的底部，BeginForm下，而不是在頂部在字段集和頁面標記下的頁面：
@using (Html.BeginForm()) {
<p>
@Html.HiddenFor(model => model.OrganizationID)
<input type="submit" value="Delete" /> |
@Html.ActionLink("Back to List", "Index")
</p>
}
低和看 - 它的工作。 我還想發佈這個！也許別人會找到它，它會幫助他們。 雖然我不知道100％爲什麼 - 有人可以對此事發表看法嗎？