StateManagedCollection.SetDirtyObject(Object) Метод

Определение

При переопределении в производном классе указывает объекту object, содержащемуся в коллекции, записать свое полное состояние, а не только информацию об изменениях в состоянии представления.When overridden in a derived class, instructs an object contained by the collection to record its entire state to view state, rather than recording only change information.

protected:
 abstract void SetDirtyObject(System::Object ^ o);
protected abstract void SetDirtyObject (object o);
abstract member SetDirtyObject : obj -> unit
Protected MustOverride Sub SetDirtyObject (o As Object)

Параметры

o
Object

Объект IStateManager, который должен сериализовать себя полностью.The IStateManager that should serialize itself completely.

Примеры

В следующем примере кода показано, как строго типизированный StateManagedCollection класс реализует абстрактный метод SetDirtyObject.The following code example demonstrates how a strongly typed StateManagedCollection class implements the abstract SetDirtyObject method. CycleCollection использует объект StateBag для хранения сведений о состоянии представления и просто делегирует вызов методу SetDirty объекта StateBag.The CycleCollection uses a StateBag object to store its view-state information, and simply delegates the call to the SetDirty method of the StateBag object. Этот пример кода является частью большого примера, приведенного для класса StateManagedCollection.This code example is part of a larger example provided for the StateManagedCollection class.

//////////////////////////////////////////////////////////////
//
// The strongly typed CycleCollection class is a collection
// that contains Cycle class instances, which implement the
// IStateManager interface.
//
//////////////////////////////////////////////////////////////
[AspNetHostingPermission(SecurityAction.Demand, 
    Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class CycleCollection : StateManagedCollection {
    
    private static readonly Type[] _typesOfCycles 
        = new Type[] { typeof(Bicycle), typeof(Tricycle) };

    protected override object CreateKnownType(int index) {
        switch(index) {
            case 0:
                return new Bicycle();
            case 1:
                return new Tricycle();                    
            default:
                throw new ArgumentOutOfRangeException("Unknown Type");
        }            
    }

    protected override Type[] GetKnownTypes() {
        return _typesOfCycles;
    }

    protected override void SetDirtyObject(object o) {
        ((Cycle)o).SetDirty();
    }

}
'////////////////////////////////////////////////////////////
'
' The strongly typed CycleCollection class is a collection
' that contains Cycle class instances, which implement the
' IStateManager interface.
'
'////////////////////////////////////////////////////////////
<AspNetHostingPermission(SecurityAction.Demand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
               Public NotInheritable Class CycleCollection
    Inherits StateManagedCollection

    Private Shared _typesOfCycles() As Type = _
        {GetType(Bicycle), GetType(Tricycle)}

    Protected Overrides Function CreateKnownType(ByVal index As Integer) As Object
        Select Case index
            Case 0
                Return New Bicycle()
            Case 1
                Return New Tricycle()
            Case Else
                Throw New ArgumentOutOfRangeException("Unknown Type")
        End Select

    End Function


    Protected Overrides Function GetKnownTypes() As Type()
        Return _typesOfCycles

    End Function


    Protected Overrides Sub SetDirtyObject(ByVal o As Object)
        CType(o, Cycle).SetDirty()

    End Sub
End Class

Комментарии

Метод SetDirtyObject вызывается внутренне с помощью методов IStateManager.SaveViewState, IList.Addи IList.Insert.The SetDirtyObject method is called internally by the IStateManager.SaveViewState, IList.Add, and IList.Insert methods.

Применяется к

Дополнительно