/// <summary>
/// Raises the <see cref="E:ItemsRemoving"/> event.
/// </summary>
/// <param name="e">The <see cref="ItemsRemovingEventArgs"/> instance containing the event data.</param>
protected virtual void OnItemsRemoving(ItemsRemovingEventArgs e)
{
if (this.ItemsRemoving != null)
{
this.ItemsRemoving(this, e);
}
}
/// <summary>
/// Remove all of the given objects from the control
/// </summary>
/// <param name="modelObjects">Collection of objects to be removed</param>
/// <remarks>
/// <para>Nulls and model objects that are not in the ListView are silently ignored.</para>
/// <para>Due to problems in the underlying ListView, if you remove all the objects from
/// the control using this method and the list scroll vertically when you do so,
/// then when you subsequenially add more objects to the control,
/// the vertical scroll bar will become confused and the control will draw one or more
/// blank lines at the top of the list. </para>
/// </remarks>
public override void RemoveObjects(ICollection modelObjects)
{
if (DataSource == null || modelObjects == null || modelObjects.Count == 0)
{
return;
}
// Give the world a chance to cancel or change the removed objects
var args = new ItemsRemovingEventArgs(modelObjects);
OnItemsRemoving(args);
if (args.Canceled)
{
return;
}
ClearCachedInfo();
DataSource.RemoveObjects(args.ObjectsToRemove);
UpdateVirtualListSize();
}
