AssociationAttribute.ThisKey Propiedad

Definición

Espacio de nombres:

System.Data.Linq.Mapping

Ensamblado:

System.Data.Linq.dll

Obtiene o establece miembros de esta clase de entidad para representar los valores de clave en este lado de la asociación.

public:
 property System::String ^ ThisKey { System::String ^ get(); void set(System::String ^ value); };

public string ThisKey { get; set; }

member this.ThisKey : string with get, set

Public Property ThisKey As String

Valor de propiedad

String

El valor predeterminado es el identificador de la clase contenedora.

Ejemplos

[Association(Name="FK_CustomerCustomerDemo", Storage="_CustomerDemographic", ThisKey="CustomerTypeID", IsForeignKey=true)]
public CustomerDemographic CustomerDemographic
{
    get
    {
        return this._CustomerDemographic.Entity;
    }
    set
    {
        CustomerDemographic previousValue = this._CustomerDemographic.Entity;
        if (((previousValue != value)
                    || (!this._CustomerDemographic.HasLoadedOrAssignedValue )))
        {
            this.SendPropertyChanging();
            if ((previousValue != null))
            {
                this._CustomerDemographic.Entity = null;
                previousValue.CustomerCustomerDemos.Remove(this);
            }
            this._CustomerDemographic.Entity = value;
            if ((value != null))
            {
                value.CustomerCustomerDemos.Add(this);
                this._CustomerTypeID = value.CustomerTypeID;
            }
            else
            {
                this._CustomerTypeID = default(string);
            }
            this.SendPropertyChanged("CustomerDemographic");
        }
    }
}

<Association(Name:="FK_CustomerCustomerDemo", Storage:="_CustomerDemographic", ThisKey:="CustomerTypeID", IsForeignKey:=True)> _
Public Property CustomerDemographic() As CustomerDemographic
    Get
        Return Me._CustomerDemographic.Entity
    End Get
    Set(ByVal value As CustomerDemographic)
        Dim previousValue As CustomerDemographic = Me._CustomerDemographic.Entity
        If (((previousValue Is value) _
           = False) _
           OrElse (Me._CustomerDemographic.HasLoadedOrAssignedValue = False)) Then
            Me.SendPropertyChanging()
            If ((previousValue Is Nothing) _
               = False) Then
                Me._CustomerDemographic.Entity = Nothing
                previousValue.CustomerCustomerDemos.Remove(Me)
            End If
            Me._CustomerDemographic.Entity = value
            If ((value Is Nothing) _
               = False) Then
                value.CustomerCustomerDemos.Add(Me)
                Me._CustomerTypeID = value.CustomerTypeID
            Else
                Me._CustomerTypeID = CType(Nothing, String)
            End If
            Me.SendPropertyChanged("CustomerDemographic")
        End If
    End Set
End Property

Comentarios

Para varios miembros, use una lista separada por comas.

La clave no es necesaria para que coincida con la clave principal o la clave externa, pero se supone que la cardinalidad indicada por el usuario (0-1 para EntityRef<TEntity> o 0-n para EntitySet<TEntity>) es true.