StructuredCompositeActivityDesigner.ContainedDesigners Propriété

Définition

Espace de noms:

System.Workflow.ComponentModel.Design

Assembly:

System.Workflow.ComponentModel.dll

Obtient une collection générique en lecture seule qui contient tous les concepteurs d'activités qui sont des enfants du StructuredCompositeActivityDesigner.

public:
 virtual property System::Collections::ObjectModel::ReadOnlyCollection<System::Workflow::ComponentModel::Design::ActivityDesigner ^> ^ ContainedDesigners { System::Collections::ObjectModel::ReadOnlyCollection<System::Workflow::ComponentModel::Design::ActivityDesigner ^> ^ get(); };

public override System.Collections.ObjectModel.ReadOnlyCollection<System.Workflow.ComponentModel.Design.ActivityDesigner> ContainedDesigners { get; }

member this.ContainedDesigners : System.Collections.ObjectModel.ReadOnlyCollection<System.Workflow.ComponentModel.Design.ActivityDesigner>

Public Overrides ReadOnly Property ContainedDesigners As ReadOnlyCollection(Of ActivityDesigner)

Valeur de propriété

ReadOnlyCollection<ActivityDesigner>

Collection ActivityDesigner en lecture seule qui contient les concepteurs enfants.

Exemples

L'exemple suivant montre comment ajouter une nouvelle branche à l'aide d'un concepteur dérivé de la classe CompositeActivityDesigner. Si CanInsertActivities retourne la valeur true, une nouvelle branche est créée à l'aide de la méthode InsertActivities. Un objet ConnectorHitTestInfo est créé en tant que paramètre de la méthode InsertActivities. La méthode EnsureVisibleContainedDesigner est ensuite utilisée pour garantir que la branche qui vient d'être ajoutée est affichée dans le concepteur de workflow en accédant à un objet unique dans la collection ContainedDesigners.

protected override CompositeActivity OnCreateNewBranch()
{
    return new ParallelIfBranch();
}

private void OnAddBranch(object sender, EventArgs e)
{
    CompositeActivity activity1 = this.OnCreateNewBranch();
    CompositeActivity activity2 = base.Activity as CompositeActivity;

    if ((activity2 != null) && (activity1 != null))
    {
        int num1 = this.ContainedDesigners.Count;
        Activity[] activityArray1 = new Activity[] { activity1 };

        if (CanInsertActivities(new ConnectorHitTestInfo(this, HitTestLocations.Designer, activity2.Activities.Count),
            new List<Activity>(activityArray1).AsReadOnly()))
        {
            CompositeActivityDesigner.InsertActivities(this,
                new ConnectorHitTestInfo(this, HitTestLocations.Designer, activity2.Activities.Count),
                new List<Activity>(activityArray1).AsReadOnly(),
                string.Format("Adding branch {0}", activity1.GetType().Name));

            if ((this.ContainedDesigners.Count > num1) && (this.ContainedDesigners.Count > 0))
            {
                this.ContainedDesigners[this.ContainedDesigners.Count - 1].EnsureVisible();
            }
        }
    }
}

Protected Overrides Function OnCreateNewBranch() As CompositeActivity
    Return New ParallelIfBranch()
End Function

Private Sub OnAddBranch(ByVal sender As Object, ByVal e As EventArgs)
    Dim activity1 As CompositeActivity = Me.OnCreateNewBranch()
    Dim activity2 As CompositeActivity = CType(MyBase.Activity, CompositeActivity)

    If (activity2 IsNot Nothing) And (activity1 IsNot Nothing) Then

        Dim num1 As Integer = Me.ContainedDesigners.Count
        Dim activityArray1() As Activity = {activity1}

        If (CanInsertActivities(New ConnectorHitTestInfo(Me, HitTestLocations.Designer, activity2.Activities.Count), _
            New List(Of Activity)(activityArray1).AsReadOnly())) Then

            CompositeActivityDesigner.InsertActivities(Me, _
                New ConnectorHitTestInfo(Me, HitTestLocations.Designer, activity2.Activities.Count), _
                New List(Of Activity)(activityArray1).AsReadOnly(), _
                String.Format("Adding branch 0}", activity1.GetType().Name))

            If (Me.ContainedDesigners.Count > num1) And (Me.ContainedDesigners.Count > 0) Then
                Me.ContainedDesigners(Me.ContainedDesigners.Count - 1).EnsureVisible()
            End If
        End If
    End If
End Sub