XmlStreamStore.DeleteAnnotation(Guid) Method
Definition
Important
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Deletes the annotation with the specified Id from the store.
public:
override System::Windows::Annotations::Annotation ^ DeleteAnnotation(Guid annotationId);
public override System.Windows.Annotations.Annotation DeleteAnnotation (Guid annotationId);
override this.DeleteAnnotation : Guid -> System.Windows.Annotations.Annotation
Public Overrides Function DeleteAnnotation (annotationId As Guid) As Annotation
Parameters
- annotationId
- Guid
The globally unique identifier (GUID) Id property of the annotation to be deleted.
Returns
The annotation that was deleted; otherwise, null
if an annotation with the specified annotationId
was not found in the store.
Exceptions
Dispose has been called on the store.
An I/O Stream has not been set for 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
See also
.NET
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