public async void UpdateImag() { if (updating) { return; } updating = true; imgsteam = await WebClass.Get(src); if (imgsteam == null) { updating = false; return; } bs = UIImage.CreateWicBitmap(imgsteam); Img = UIImage.CreateD2DBitmap(bs.Converter); updating = false; if (Parent != null) { Parent.Update = true; ThreadManage.UpdateUI = true; } }