public RadioCellTestViewModel() { RadioItems.AddRange(new List <RadioItem> { new RadioItem { Name = "TypeA", Value = 1 }, new RadioItem { Name = "TypeB", Value = 2 }, new RadioItem { Name = "TypeC", Value = 3 }, new RadioItem { Name = "TypeD", Value = 4 }, new RadioItem { Name = "TypeE", Value = 5 }, new RadioItem { Name = "TypeF", Value = 6 }, }); Selected.Value = RadioItems[1]; }