public DataUiGrid()
{
Categories = new ObservableCollection<MemberCategory>();
InitializeComponent();
//TreeView.DataContext = mCategories;
TypesToIgnore = new ObservableCollection<Type>();
TypesToIgnore.CollectionChanged += HandleTypesToIgnoreChanged;
MembersToIgnore = new ObservableCollection<string>();
MembersToIgnore.CollectionChanged += HandleMembersToIgnoreChanged;
this.DataContext = this;
}