public MainViewModel() { var item1 = new SampleViewModel() { Color = "Pink", Name = "1" }; var item2 = new SampleViewModel() { Color = "Red", Name = "2" }; var item3 = new SampleViewModel() { Color = "Blue", Name = "3" }; var item4 = new SampleViewModel() { Color = "LightBlue", Name = "4" }; View = new DockTileManagerViewModel(item1); View.AddTile(item1, item2, DockTileDirection.Top); View.AddTile(item1, item3, DockTileDirection.Right); View.AddTile(item1, item4, DockTileDirection.Right); }