protected override void OnCollectionChanged(NotifyCollectionChangedEventArgs e)
{
if (_IsUpdate)
{
return;
}
GUIThreadHelper.Invoke(() => RaiseCollectionChanged(e));
}
/// <summary>
/// 更新集合内容，更新完成后统一通知集合变更。
/// </summary>
/// <param name="call"></param>
public void BeginUpdate(Action call)
{
try
{
_IsUpdate = true;
GUIThreadHelper.Invoke(() =>
{
call();
base.OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
});
}
finally
{
_IsUpdate = false;
}
}