public ViewBlock(string hostelids, string areaid)
{
InitializeComponent();
hostelids1 = hostelids;
areaids = areaid;
BindingContext = vm = new ViewBlockVM(hostelids, areaid);
}
protected override void OnAppearing()
{
base.OnAppearing();
BindingContext = vm = new ViewBlockVM(hostelids1, areaids);
}