[Débutant] ASP MVC 4.0 exception ENtityFramework context.savechanges()

Bonjour,

lorsque je souhaite créer un nouvel objet dans ma méthode create de mon controller et que je le sauve, entity framework me lance une exception.

voici le code de mon create :

Pour info: je passe ces paramètres de cette manière et non par un objet de type Fiches car sinon le modelState est toujours invalide a cause des relations many to many (liste de checkbox que j'ai du implémenter)

Code:

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' POST: Fiches/Create
        <HttpPost()>
        Function Create(nomenclatureId As Long, NatureTravaux() As Long, natureAcquisitions() As Long, NatureMaintenance() As Long, NatureGeneral() As Long, SiAutre As String, Libelle As String, _
                        Description As String, DemandeurId As Long, Montant As Double, EstSubsidie As Boolean, PourcentageId As Long, DureeId As Long, DateCollege As DateTime, _
                        ProjetId As Long, PrioriteId As Long, IsAutreServiceImplique As Boolean, Services() As Long, Contraintes() As Long, Responsable As String, Optional NumeroProjet As Long = 0) As ActionResult ' ByVal fiche as Fiches
            Try
                If Not ModelState.IsValid Then
                    Return RedirectToAction("Create", "Fiches")
                Else
                    Dim uneFiche As Fiches = New Fiches()
                    uneFiche.NomenclatureId = nomenclatureId
 
                    If NatureTravaux IsNot Nothing Then
                        For Each item As Long In NatureTravaux
                            uneFiche.NatureTravaux.Add(context.NatureTravaux.FirstOrDefault(Function(x) x.NatureTravauxId = item))
                        Next
                    End If
 
                    If natureAcquisitions IsNot Nothing Then
                        For Each item As Long In natureAcquisitions
                            uneFiche.NatureAcquisitions.Add(context.NatureAcquisitions.FirstOrDefault(Function(x) x.NatureAcquisitionId = item))
                        Next
                    End If
 
                    If NatureMaintenance IsNot Nothing Then
                        For Each item As Long In NatureMaintenance
                            uneFiche.NatureMaintenances.Add(context.NatureMaintenances.FirstOrDefault(Function(x) x.NatureMaintenanceId = item))
                        Next
                    End If
 
                    If NatureGeneral IsNot Nothing Then
                        For Each item As Long In NatureGeneral
                            uneFiche.NatureGenerales.Add(context.NatureGenerales.FirstOrDefault(Function(x) x.NatureGeneralId = item))
                        Next
                    End If
                    If Not String.IsNullOrEmpty(SiAutre) Then
                        uneFiche.SiAutre = SiAutre
                    End If
                    uneFiche.Libelle = Libelle
 
                    If Not String.IsNullOrEmpty(Description) Then
                        uneFiche.Description = Description
                    End If
                    uneFiche.DemandeurId = DemandeurId
                    uneFiche.Montant = Montant
 
                    If EstSubsidie Then
                        uneFiche.EstSubsidie = EstSubsidie
                        uneFiche.PourcentageId = PourcentageId
                    Else
                        uneFiche.EstSubsidie = False
                    End If
                    uneFiche.DureeId = DureeId
                    uneFiche.DateCollege = DateCollege
                    uneFiche.ProjetId = ProjetId
                    uneFiche.PrioriteId = PrioriteId
 
                    If IsAutreServiceImplique Then
                        uneFiche.IsAutreServiceImplique = IsAutreServiceImplique
                        If Services IsNot Nothing Then
                            For Each item As Long In Services
                                uneFiche.Services1.Add(context.Services.FirstOrDefault(Function(x) x.ServiceId = item))
                            Next
                        Else
                            RedirectToAction("Create")
                        End If
                    Else
                        uneFiche.IsAutreServiceImplique = False
                    End If
 
                    If Contraintes IsNot Nothing Then
                        For Each item As Long In Contraintes
                            uneFiche.Contraintes.Add(context.Contraintes.FirstOrDefault(Function(x) x.ContrainteId = item))
                        Next
                    End If
 
                    uneFiche.Responsable = Responsable
                    If NumeroProjet > 0 Then
                        uneFiche.NumeroProjet = NumeroProjet
                    End If
 
                    context.Fiches.Add(uneFiche)
                    context.SaveChanges()
                End If
 
                Return RedirectToAction("Index")
            Catch
                Return View("Erreur")
            End Try
        End Function

voici la vue qui lui est liée :

Code:

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@ModelType Fiche_Budgetaire.Fiches
@Code
    ViewData("Title") = "Create"
End Code
 
<h2>Create</h2>
 
@Using (Html.BeginForm())
    @Html.AntiForgeryToken()
 
    @<div class="form-horizontal">
        <h4>Fiches</h4>
        <hr />
        @Html.ValidationSummary(True, "", New With {.class = "text-danger"})
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.NomenclatureId, "Nomenclature", htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.DropDownListFor(Function(x) x.NomenclatureId, New SelectList(CType(ViewBag.Nomenclatures, List(Of Nomenclatures)), "NomenclatureId", "Libelle"), htmlAttributes:=New With {.class = "form-control"})
                @Html.ValidationMessageFor(Function(model) model.NomenclatureId, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.NatureTravaux, "Nature TRAVAUX", htmlAttributes:=New With {.class = "control-label col-md-2"})
            @For Each item In CType(ViewBag.NatureTravaux, List(Of NatureTravaux))
                @<div>
                    <label>
                        <input type="checkbox" name="NatureTravaux" value="@item.NatureTravauxId" /> <span class="NormalFontWeight">@item.Libelle</span>
                    </label>
                </div>
            Next
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.NatureAcquisitions, "Nature ACQUISITION", htmlAttributes:=New With {.class = "control-label col-md-2"})
            @For Each item In CType(ViewBag.NatureAcquisition, List(Of NatureAcquisitions))
                @<div>
                    <label>
                        <input type="checkbox" name="NatureAcquisitions" value="@item.NatureAcquisitionId" /> <span class="NormalFontWeight">@item.Libelle</span>
                    </label>
                </div>
            Next
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.NatureMaintenances, "Nature MAINTENANCE", htmlAttributes:=New With {.class = "control-label col-md-2"})
            @For Each item In CType(ViewBag.NatureMaintenance, List(Of NatureMaintenances))
                @<div>
                    <label>
                        <input type="checkbox" name="NatureMaintenance" value="@item.NatureMaintenanceId" /> <span class="NormalFontWeight">@item.Libelle</span>
                    </label>
                </div>
            Next
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.NatureGenerales, "Nature GÉNÉRALE", htmlAttributes:=New With {.class = "control-label col-md-2"})
            @For Each item In CType(ViewBag.NatureGenerales, List(Of NatureGenerales))
                @<div>
                    <label>
                        <input type="checkbox" name="NatureGeneral" value="@item.NatureGeneralId" /> <span class="NormalFontWeight">@item.Libelle</span>
                    </label>
                </div>
            Next
        </div>
 
    <div class="form-group">
        @Html.LabelFor(Function(model) model.SiAutre, "Si ""Autres"", précisez", htmlAttributes:=New With {.class = "control-label col-md-2"})
        <div class="col-md-10">
            @Html.TextAreaFor(Function(model) model.SiAutre, New With {.htmlAttributes = New With {.class = "form-control"}})
            @Html.ValidationMessageFor(Function(model) model.SiAutre, "", New With {.class = "text-danger"})
        </div>
    </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.Libelle, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.EditorFor(Function(model) model.Libelle, New With {.htmlAttributes = New With {.class = "form-control"}})
                @Html.ValidationMessageFor(Function(model) model.Libelle, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.Description, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.EditorFor(Function(model) model.Description, New With {.htmlAttributes = New With {.class = "form-control"}})
                @Html.ValidationMessageFor(Function(model) model.Description, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.DemandeurId, "Demandeur", htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.DropDownListFor(Function(x) x.DemandeurId, New SelectList(CType(ViewBag.Demandeurs, List(Of Demandeurs)), "DemandeurId", "Libelle"), htmlAttributes:=New With {.class = "form-control"})
                @Html.ValidationMessageFor(Function(model) model.DemandeurId, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.Montant, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.EditorFor(Function(model) model.Montant, New With {.htmlAttributes = New With {.class = "form-control"}})
                @Html.ValidationMessageFor(Function(model) model.Montant, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.EstSubsidie, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                <div class="checkbox">
                    @Html.EditorFor(Function(model) model.EstSubsidie)
                    @Html.ValidationMessageFor(Function(model) model.EstSubsidie, "", New With {.class = "text-danger"})
                </div>
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.PourcentageId, "Pourcentage", htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.DropDownListFor(Function(x) x.PourcentageId, New SelectList(CType(ViewBag.Pourcentages, List(Of Pourcentages)), "PourcentageId", "valeur"), htmlAttributes:=New With {.class = "form-control"})
                @Html.ValidationMessageFor(Function(model) model.PourcentageId, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.DureeId, "Durée", htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.DropDownListFor(Function(x) x.DureeId, New SelectList(CType(ViewBag.Durees, List(Of Durees)), "DureeId", "Libelle"), htmlAttributes:=New With {.class = "form-control"})
                @Html.ValidationMessageFor(Function(model) model.DureeId, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.DateCollege, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.EditorFor(Function(model) model.DateCollege, New With {.htmlAttributes = New With {.class = "datepicker form-control"}})
                @Html.ValidationMessageFor(Function(model) model.DateCollege, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.ProjetId, "Projet", htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.DropDownListFor(Function(x) x.ProjetId, New SelectList(CType(ViewBag.Projets, List(Of Projets)), "ProjetId", "Type"), htmlAttributes:=New With {.class = "form-control"})
                @Html.ValidationMessageFor(Function(model) model.ProjetId, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.NumeroProjet, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.EditorFor(Function(model) model.NumeroProjet, New With {.htmlAttributes = New With {.class = "form-control"}})
                @Html.ValidationMessageFor(Function(model) model.NumeroProjet, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.PrioriteId, "Priorité", htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.DropDownListFor(Function(x) x.PrioriteId, New SelectList(CType(ViewBag.Priorites, List(Of Priorites)), "PrioriteId", "Libelle"), htmlAttributes:=New With {.class = "form-control"})
                @Html.ValidationMessageFor(Function(model) model.PrioriteId, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.IsAutreServiceImplique, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                <div class="checkbox">
                    @Html.EditorFor(Function(model) model.IsAutreServiceImplique)
                    @Html.ValidationMessageFor(Function(model) model.IsAutreServiceImplique, "", New With {.class = "text-danger"})
                </div>
            </div>
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.ServiceId, "Service", htmlAttributes:=New With {.class = "control-label col-md-2"})
            @For Each item In CType(ViewBag.Services, List(Of Services))
                @<div>
                    <label>
                        <input type="checkbox" name="Services" value="@item.ServiceId" /> <span class="NormalFontWeight">@item.Libelle</span>
                    </label>
                </div>
            Next
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.Contraintes, "Contraintes de mise en oeuvre", htmlAttributes:=New With {.class = "control-label col-md-2"})
            @For Each item In CType(ViewBag.Contraintes, List(Of Contraintes))
                @<div>
                    <label>
                        <input type="checkbox" name="Contraintes" value="@item.ContrainteId" /> <span class="NormalFontWeight">@item.Libelle</span>
                    </label>
                </div>
            Next
        </div>
 
        <div class="form-group">
            @Html.LabelFor(Function(model) model.Responsable, htmlAttributes:=New With {.class = "control-label col-md-2"})
            <div class="col-md-10">
                @Html.EditorFor(Function(model) model.Responsable, New With {.htmlAttributes = New With {.class = "form-control"}})
                @Html.ValidationMessageFor(Function(model) model.Responsable, "", New With {.class = "text-danger"})
            </div>
        </div>
 
        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Nouvelle demande" class="btn btn-default" />
            </div>
        </div>
    </div>
End Using
 
<div>
    @Html.ActionLink("Retour accueil", "Index")
</div>
 
<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

voici l'exception retournée par EntityFramework :

Citation:

{"L'instruction INSERT est en conflit avec la contrainte FOREIGN KEY "FK_dbo.Fiches_dbo.Pourcentages_PourcentageId". Le conflit s'est produit dans la base de données "FicheBudgetaireContext", table "dbo.Pourcentages", column 'PourcentageId'.
L'instruction a été arrêtée."}

Dans le doute, voici le code de la classe Fiches :

Code:

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Imports System
Imports System.Collections.Generic
Imports System.ComponentModel.DataAnnotations
Imports System.ComponentModel.DataAnnotations.Schema
Imports System.Data.Entity.Spatial
 
Partial Public Class Fiches
    Public Sub New()
        Contraintes = New HashSet(Of Contraintes)()
        NatureAcquisitions = New HashSet(Of NatureAcquisitions)()
        NatureGenerales = New HashSet(Of NatureGenerales)()
        NatureMaintenances = New HashSet(Of NatureMaintenances)()
        NatureTravaux = New HashSet(Of NatureTravaux)()
        Services1 = New HashSet(Of Services)()
    End Sub
 
    <Key>
    Public Property FicheId As Long
 
    <Required>
    <StringLength(150)>
    Public Property Libelle As String
 
    <DataType(DataType.MultilineText)>
    Public Property Description As String
 
    Public Property Montant As Double
 
    <Display(Name:="Subside")>
    Public Property EstSubsidie As Boolean
 
    <DisplayFormat(ApplyFormatInEditMode:=True, DataFormatString:="{0:dd/MM/yyyy}")>
    <Display(Name:="Date")>
    Public Property DateCollege As DateTime
 
    <Display(Name:="Autres services impliqués")>
      Public Property IsAutreServiceImplique As Boolean
 
    <Required>
    Public Property Responsable As String
 
    Public Property NomenclatureId As Long
 
    Public Property DemandeurId As Long
 
    Public Property PourcentageId As Long
 
    Public Property DureeId As Long
 
    Public Property ProjetId As Long
 
    Public Property PrioriteId As Long
 
    Public Property ServiceId As Long
 
    <StringLength(50)>
      <Display(Name:="Si poursuite, indiquez le numéro de projet")>
    Public Property NumeroProjet As String
 
    Public Property SiAutre As String
 
    Public Overridable Property Demandeurs As Demandeurs
 
    Public Overridable Property Durees As Durees
 
    Public Overridable Property Nomenclatures As Nomenclatures
 
    Public Overridable Property Pourcentages As Pourcentages
 
    Public Overridable Property Priorites As Priorites
 
    Public Overridable Property Projets As Projets
 
    Public Overridable Property Services As Services
 
    Public Overridable Property Contraintes As ICollection(Of Contraintes)
 
    Public Overridable Property NatureAcquisitions As ICollection(Of NatureAcquisitions)
 
    Public Overridable Property NatureGenerales As ICollection(Of NatureGenerales)
 
    Public Overridable Property NatureMaintenances As ICollection(Of NatureMaintenances)
 
    Public Overridable Property NatureTravaux As ICollection(Of NatureTravaux)
 
    Public Overridable Property Services1 As ICollection(Of Services)
End Class

Auriez-vous une idée car là je sèche :(
D'avance merci.