private void CategoryGrid_ItemClick(object sender, ItemClickEventArgs e)
{
Category category = (Category)e.ClickedItem;
CategoryDetailParameters param = new CategoryDetailParameters(_authenticationVM, category);
page.Navigate(typeof(CategoryDetailPage), param);
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
CategoryDetailParameters param = (CategoryDetailParameters)e.Parameter;
_authenticationVM = param._authenticationVM;
InitializeCategoryDetails(param._category);
}