ForeignKeyConstraint.AcceptRejectRule ForeignKeyConstraint.AcceptRejectRule ForeignKeyConstraint.AcceptRejectRule ForeignKeyConstraint.AcceptRejectRule Property

Definición

Indica la acción que se debe llevar a cabo en esta restricción cuando se llama a AcceptChanges().Indicates the action that should take place across this constraint when AcceptChanges() is invoked.

public:
 virtual property System::Data::AcceptRejectRule AcceptRejectRule { System::Data::AcceptRejectRule get(); void set(System::Data::AcceptRejectRule value); };
[System.Data.DataSysDescription("ForeignKeyConstraintAcceptRejectRuleDescr")]
public virtual System.Data.AcceptRejectRule AcceptRejectRule { get; set; }
member this.AcceptRejectRule : System.Data.AcceptRejectRule with get, set
Public Overridable Property AcceptRejectRule As AcceptRejectRule

Valor de propiedad

Uno de los valores de AcceptRejectRule.One of the AcceptRejectRule values. Entre los posibles valores se incluyen None y Cascade.Possible values include None, and Cascade. De manera predeterminada, es None.The default is None.

Ejemplos

En el ejemplo siguiente se ForeignKeyConstraintcrea un, AcceptRejectRulese establece y se agrega la ConstraintCollectionrestricción DataTable a un objeto.The following example creates a ForeignKeyConstraint, sets its AcceptRejectRule, and adds the constraint to a DataTable object's ConstraintCollection.

' The next line goes into the Declarations section of the module:
' SuppliersProducts is a class derived from DataSet.
Private suppliersProducts As SuppliersProducts 

Private Sub CreateConstraint()
   ' Declare parent column and child column variables.
   Dim parentColumn As DataColumn
   Dim childColumn As DataColumn
   Dim fkConstraint As ForeignKeyConstraint

   ' Set parent and child column variables.
   parentColumn = suppliersProducts.Tables("Suppliers").Columns("SupplierID")
   childColumn = suppliersProducts.Tables("Products").Columns("SupplieriD")
   fkConstraint = New ForeignKeyConstraint( _
       "SuppierFKConstraint", parentColumn, childColumn)

   ' Set null values when a value is deleted.
   fkConstraint.DeleteRule = Rule.SetNull
   fkConstraint.UpdateRule = Rule.Cascade
   fkConstraint.AcceptRejectRule = AcceptRejectRule.Cascade

   ' Add the constraint, and set EnforceConstraints to true.
   suppliersProducts.Tables("Suppliers").Constraints.Add(fkConstraint)
   suppliersProducts.EnforceConstraints = True
End Sub

Comentarios

Los cambios en DataRow o DataTable no son finales hasta que AcceptChanges se invoca el método.Changes to a DataRow or DataTable are not final until the AcceptChanges method is invoked. En ese momento, AcceptRejectRule determina el curso de acción en los valores que se han cambiado o eliminado.At that point, the AcceptRejectRule determines the course of action on any values that have been changed or deleted.

Se aplica a

Consulte también: