WorkflowDesignerLoader.RemoveActivityFromDesigner(Activity) Método

Definição

Namespace:

System.Workflow.ComponentModel.Design

Assembly:

System.Workflow.ComponentModel.dll

Remove uma atividade do host do designer depois que ela foi adicionada à coleção de atividades pai.

public:
 void RemoveActivityFromDesigner(System::Workflow::ComponentModel::Activity ^ activity);

public void RemoveActivityFromDesigner (System.Workflow.ComponentModel.Activity activity);

member this.RemoveActivityFromDesigner : System.Workflow.ComponentModel.Activity -> unit

Public Sub RemoveActivityFromDesigner (activity As Activity)

Parâmetros

activity

Activity

Atividade a ser removida do designer.

Exemplos

O exemplo a seguir mostra como remover uma atividade do WorkflowDesignerLoader. Antes que a última atividade filho no fluxo de trabalho seja removida do WorkflowDesignerLoader, ela é removida pela primeira vez da coleção de fluxo de Activities trabalho.

public void RemoveLastChildActivity()
{
    IDesignerHost designerHost = (IDesignerHost)GetService(typeof(IDesignerHost));
    CompositeActivity rootActivity = designerHost.RootComponent as CompositeActivity;

    if (rootActivity.Activities.Count > 0)
    {
        Activity activityToRemove = rootActivity.Activities[rootActivity.Activities.Count - 1];
        rootActivity.Activities.Remove(activityToRemove);
        this.RemoveActivityFromDesigner(activityToRemove);
    }
}

Public Sub RemoveLastChildActivity()
    Dim designerHost As IDesignerHost = CType(GetService(GetType(IDesignerHost)), IDesignerHost)
    Dim rootActivity As CompositeActivity = CType(designerHost.RootComponent, CompositeActivity)

    If rootActivity.Activities.Count > 0 Then
        Dim activityToRemove As Activity = rootActivity.Activities(rootActivity.Activities.Count - 1)
        rootActivity.Activities.Remove(activityToRemove)
        Me.RemoveActivityFromDesigner(activityToRemove)
    End If
End Sub