[英]IDENTITY_INSERT is set to OFF in MVC application
我试图在MVC 5中创建新员工。我使用CRUD生成视图和模型。 我编辑了几行代码,然后出现此错误:
当IDENTITY_INSERT设置为OFF时,无法在表'Table'中为标识列插入显式值。
我从哪里得到的:
public ActionResult Create([Bind(Include = "Imie,Nazwisko,Pesel,Data_zatrudnienia,Data_zwolnienia,Pensja,Wyksztalcenie")] Osoba osoba,Pracownik pracownik)
{
if (ModelState.IsValid)
{
db.Osoba.Add(osoba);
db.Pracownik.Add(pracownik);
db.SaveChanges();
return RedirectToAction("Index");
}
我的模特班:
public partial class Pracownik
{
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public int Id_osoby { get; set; }
public System.DateTime Data_zatrudnienia { get; set; }
public Nullable<System.DateTime> Data_zwolnienia { get; set; }
public double Pensja { get; set; }
public string Wyksztalcenie { get; set; }
public virtual Osoba Osoba { get; set; }
public virtual Pracownik_biurowy Pracownik_biurowy { get; set; }
public virtual Przewodnik Przewodnik { get; set; }
}
public partial class Osoba
{
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public int Id_osoby { get; set; }
public string Imie { get; set; }
public string Nazwisko { get; set; }
public string Pesel { get; set; }
public virtual Pracownik Pracownik { get; set; }
}
创建表单视图:
@model BiuroPrototyp.Models.Pracownik
@{
ViewBag.Title = "Create";
}
<h2>Create</h2>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<h4>Pracownik</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
@Html.LabelFor(model => model.Osoba.Imie, htmlAttributes: new {@class = "control-label col-md-2"})
<div class="col-md-10">
@Html.EditorFor(model => model.Osoba.Imie, new {htmlAttributes = new {@class = "form-control"}})
@Html.ValidationMessageFor(model => model.Osoba.Imie, "", new {@class = "text-danger"})
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Osoba.Nazwisko, htmlAttributes: new {@class = "control-label col-md-2"})
<div class="col-md-10">
@Html.EditorFor(model => model.Osoba.Nazwisko, new {htmlAttributes = new {@class = "form-control"}})
@Html.ValidationMessageFor(model => model.Osoba.Nazwisko, "", new {@class = "text-danger"})
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Osoba.Pesel, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Osoba.Pesel, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Osoba.Pesel, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Data_zatrudnienia, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Data_zatrudnienia, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Data_zatrudnienia, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Pensja, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Pensja, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Pensja, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Wyksztalcenie, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Wyksztalcenie, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Wyksztalcenie, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
'Pracownik'
类是雇员,他是英语中“ Person”的“ Osoba”的继承人。 我不知道我在哪里尝试将此ID放入代码中。
您正在尝试使用数据库设置的显式ID将对象保存到数据库,而数据库本身希望生成该值。 也就是说,您对象中的Id_osoby属性设置为0以外的值,并且EF框架未将其标识为标识字段。 如果您希望按照帖子的建议由数据库生成ID,则应使用[Key]属性修饰Object中相应的属性。
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