protected override void OnUnloaded()
{
this.DataContext = null;
this.viewModel.Dispose();
this.viewModel = null;
this.IsVisibleChanged -= IsVisibleChangedHandler;
}
protected override void OnLoaded()
{
this.DataContext = this.viewModel = new ViewModelSkinEarningProgressControl();
this.IsVisibleChanged += IsVisibleChangedHandler;
}