protected override void OnUnloaded()
{
if (IsDesignTime)
{
return;
}
if (Instance == this)
{
Instance = null;
}
this.DataContext = null;
viewModel.Dispose();
viewModel = null;
}
protected override void OnLoaded()
{
if (IsDesignTime)
{
return;
}
if (Instance != null)
{
throw new Exception(this.GetType() + " instance is already exists");
}
Instance = this;
if (viewModel == null)
{
viewModel = new ViewModelHUD();
}
this.DataContext = viewModel;
}