private void LoadPeopleInGroup(Group group, string firstPerson, string secondPerson,
			string thirdPerson, string fourthPerson, string fifthPerson)
		{
			group.Participants.Add(new Person(firstPerson));
			group.Participants.Add(new Person(secondPerson));
			group.Participants.Add(new Person(thirdPerson));
			group.Participants.Add(new Person(fourthPerson));
			group.Participants.Add(new Person(fifthPerson));
		}
		public SampleViewModel()
		{
			this.GroupStaff = new ObservableCollection<Group>();
			this.GroupTeams = new ObservableCollection<Group>();

			Group gr = new Group();
			gr.Name = "QAS";
			this.LoadPeopleInGroup(gr, "Nancy Davolio", "Andrew Fuller", "Janet Levering", "Margaret Peacock", "Steven Buchanan");
			GroupStaff.Add(gr);

			gr = new Group();
			gr.Name = "Designers";
			this.LoadPeopleInGroup(gr, "Maria Anders", "Ana Trujillo", "Antonio Moreno", "Thomas Hardy", "Christina Berglund");
			GroupStaff.Add(gr);

			gr = new Group();
			gr.Name = "Sales";
			this.LoadPeopleInGroup(gr, "Hanna Moos", "Laurence Lebihan", "Elizabeth Lincoln", "Victoria Ashworth", "Patricio Simpson");
			GroupStaff.Add(gr);

			gr = new Group();
			gr.Name = "Developers";
			this.LoadPeopleInGroup(gr, "Francisco Chang", "Yang Wang", "Pedro Afonso", "Elizabeth Brown", "Sven Ottlieb");
			GroupStaff.Add(gr);

			gr = new Group();
			gr.Name = "Managers";
			this.LoadPeopleInGroup(gr, "Janine Labrune", "Ann Devon", "Roland Mendel", "Aria Cruz", "Diego Roel");
			GroupStaff.Add(gr);

			gr = new Group();
			gr.Name = "XamlTeam";
			GroupTeams.Add(gr);

			gr = new Group();
			gr.Name = "WebTeam";
			GroupTeams.Add(gr);

			gr = new Group();
			gr.Name = "AspNetTeam";
			GroupTeams.Add(gr);
		}