AnnotationStore.DeleteAnnotation(Guid) Method

Reference

Definition

Namespace:: System.Windows.Annotations.Storage

Assembly:: PresentationFramework.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Deletes the annotation with the specified Id from the store.

public:
 abstract System::Windows::Annotations::Annotation ^ DeleteAnnotation(Guid annotationId);

public abstract System.Windows.Annotations.Annotation DeleteAnnotation (Guid annotationId);

abstract member DeleteAnnotation : Guid -> System.Windows.Annotations.Annotation

Public MustOverride Function DeleteAnnotation (annotationId As Guid) As Annotation

Parameters

annotationId: Guid

The GUID Id property of the annotation to be deleted.

Returns

Annotation

The annotation that was deleted; otherwise, null if an annotation with the specified annotationId was not found in the store.

Exceptions

ObjectDisposedException

Dispose has been called on the store.

Examples

The following example shows use of the DeleteAnnotation and Flush methods.

// ------------------------- DeleteMark_Click -------------------------
void DeleteMark_Click(object sender, RoutedEventArgs e)
{
    Annotation ann = ((MenuItem)sender).Tag as Annotation;
    _annStore.DeleteAnnotation(ann.Id);
    _annStore.Flush();

    MenuItem thisMenu = sender as MenuItem;
    ContextMenu parentMenu = thisMenu.Parent as ContextMenu;
    FrameworkElement dObj =
        parentMenu.PlacementTarget as FrameworkElement;
    while (!(dObj is StackPanel))
    {
        dObj = dObj.Parent as FrameworkElement;
    }

    ListBox collection = dObj.Parent as ListBox;
    collection.Items.Remove(dObj);
    Util.FlushDispatcher();
}

Applies to

通过