Question

我正在尝试使用DbContext

在Entity Framework中实现我的CRUD操作

我有一个名为“offreLocation”的类继承自名为“publication”的晚餐类

我没有收到任何错误，但点击创建按钮后，我仍然有创建视图，虽然我在创建后指定了重定向到列表视图。

这里是我的创建功能

  // POST: /OffreLocation/Create
    [HttpPost]
    public ActionResult CreateOffreLocation(OffreLocation offreLocation)
    {
        try
        {
            db.PublicationSet.Add(offreLocation);
            db.SaveChanges();

            return RedirectToAction("ListOffreLocation");
        }
        catch
        {
            return View();
        }
    }

我的创建视图：

@model COM.MENNILIK.Models.OffreLocation

@{
   ViewBag.Title = "CreateOffreLocation";
}

<h2 style="text-align:center">Nouvelle offre de location </h2>

@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()

<div class="form-horizontal">

    <hr />
    @Html.ValidationSummary(true)

    <div class="form-group">
        @Html.LabelFor(model => model.Publication_ID, new { @class = "control-label col-md-2" })
        <div class="col-lg-1">
            @Html.EditorFor(model => model.Publication_ID)
            @Html.ValidationMessageFor(model => model.Publication_ID)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Publication_Statut, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Publication_Statut)
            @Html.ValidationMessageFor(model => model.Publication_Statut)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Publication_Meublee, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Publication_Meublee)
            @Html.ValidationMessageFor(model => model.Publication_Meublee)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Publication_Descriptif, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Publication_Descriptif)
            @Html.ValidationMessageFor(model => model.Publication_Descriptif)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Publication_ContactParAgence, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Publication_ContactParAgence)
            @Html.ValidationMessageFor(model => model.Publication_ContactParAgence)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Publication_Maps_Latitude, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Publication_Maps_Latitude)
            @Html.ValidationMessageFor(model => model.Publication_Maps_Latitude)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Publication_Maps_Longitude, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Publication_Maps_Longitude)
            @Html.ValidationMessageFor(model => model.Publication_Maps_Longitude)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.OffreLocation_TypeLog, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.OffreLocation_TypeLog)
            @Html.ValidationMessageFor(model => model.OffreLocation_TypeLog)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.OffreLocation_Sante, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.OffreLocation_Sante)
            @Html.ValidationMessageFor(model => model.OffreLocation_Sante)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.OffreLocation_Loyer, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.OffreLocation_Loyer)
            @Html.ValidationMessageFor(model => model.OffreLocation_Loyer)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.OffreLocation_DateDisponibilite, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.OffreLocation_DateDisponibilite)
            @Html.ValidationMessageFor(model => model.OffreLocation_DateDisponibilite)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.OffreLocation_Superficie, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.OffreLocation_Superficie)
            @Html.ValidationMessageFor(model => model.OffreLocation_Superficie)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.OffreLocation_NbreChambre, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.OffreLocation_NbreChambre)
            @Html.ValidationMessageFor(model => model.OffreLocation_NbreChambre)
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.OffreLocation_NbrePieces, new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.OffreLocation_NbrePieces)
            @Html.ValidationMessageFor(model => model.OffreLocation_NbrePieces)
        </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", "ListOffreLocation")
</div>

我的模型容器

更精确

public partial class Model1Container : DbContext
{
    public Model1Container()
        : base("name=Model1Container")
    {
    }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        throw new UnintentionalCodeFirstException();
    }

    public DbSet<Utilisateur> UtilisateurSet { get; set; }
    public DbSet<Abonnement> AbonnementSet { get; set; }
    public DbSet<AbonnementHistorique> AbonnementHistoriqueSet { get; set; }
    public DbSet<ColocataireIdeal> ColocataireIdealSet { get; set; }
    public DbSet<Publication> PublicationSet { get; set; }
    public DbSet<Quartier> QuartierSet { get; set; }
    public DbSet<Ville> VilleSet { get; set; }
    public DbSet<RegionProvince> RegionProvinceSet { get; set; }
    public DbSet<Photo> PhotoSet { get; set; }
    public DbSet<MessageLocation> MessageLocationSet { get; set; }
    public DbSet<MessageColocation> MessageColocationSet { get; set; }
}

“publication”模型

    public partial class Publication
{
    public Publication()
    {
        this.Photo = new HashSet<Photo>();
    }

    public int Publication_ID { get; set; }
    public string Publication_Statut { get; set; }
    public bool Publication_Meublee { get; set; }
    public string Publication_Descriptif { get; set; }
    public bool Publication_ContactParAgence { get; set; }
    public double Publication_Maps_Latitude { get; set; }
    public double Publication_Maps_Longitude { get; set; }

    public virtual Quartier Quartier { get; set; }
    public virtual ICollection<Photo> Photo { get; set; }
}

“offreLocation”模型

 public partial class OffreLocation : Publication
{
    public OffreLocation()
    {
        this.Locataire = new HashSet<Locataire>();
        this.DemandeLocation = new HashSet<DemandeLocation>();
        this.DemandeLocation1 = new HashSet<DemandeLocation>();
        this.DemandeLocation2 = new HashSet<DemandeLocation>();
        this.DemandeLocation3 = new HashSet<DemandeLocation>();
    }

    public string OffreLocation_TypeLog { get; set; }
    public string OffreLocation_Sante { get; set; }
    public double OffreLocation_Loyer { get; set; }
    public System.DateTime OffreLocation_DateDisponibilite { get; set; }
    public double OffreLocation_Superficie { get; set; }
    public short OffreLocation_NbreChambre { get; set; }
    public short OffreLocation_NbrePieces { get; set; }

    public virtual ICollection<Locataire> Locataire { get; set; }
    public virtual Proprietaire Proprietaire { get; set; }
    public virtual ICollection<DemandeLocation> DemandeLocation { get; set; }
    public virtual ICollection<DemandeLocation> DemandeLocation1 { get; set; }
    public virtual ICollection<DemandeLocation> DemandeLocation2 { get; set; }
    public virtual ICollection<DemandeLocation> DemandeLocation3 { get; set; }
}

Answer 1

这是因为你在这两行中的任何一行都得到了一个例外：

db.PublicationSet.Add(offreLocation);
db.SaveChanges();

将您带到catch区块。它再次返回相同的视图。

catch
{
    return View();
}

尝试调试代码。将breakpoint放在这两行。并找到导致它抛出异常的原因。（这很可能是由于某些与数据库相关的问题，错误的数据等。）

Heritage：使用DBContext在EntityFramework中进行CRUD操作

1 个答案: