// add all campus which come from API and show them in the menu page
public void AddButtons()
{
if (Application.Current.Properties.ContainsKey("map"))
{
map = (GMTEMap)Application.Current.Properties["map"];
}
for (int i = stack.Children.Count - 1; i >= 2; i--)
{
stack.Children.RemoveAt(i);
}
var campusList = map.GetCampusList();
foreach (string name in campusList)
{
var click = new MenuButtons(name);
stack.Children.Add(click);
}
}