class SomeItem1
	{
		public string Name1 { get; set; }
		public string Name2 { get; set; }
		public int Kind { get; set; }
		public System.Windows.Visibility v1 { get { return Kind == 1 ? System.Windows.Visibility.Visible : System.Windows.Visibility.Collapsed; } }
		public System.Windows.Visibility v2 { get { return Kind == 2 ? System.Windows.Visibility.Visible : System.Windows.Visibility.Collapsed; } }
	}

			<HierarchicalDataTemplate DataType="local:SomeItem1">
				<Grid>
					<Label Content="{Binding Name1}" Visibility="{Binding v1}" Margin="10" />
					<Label Content="{Binding Name2}" Visibility="{Binding v2}" Margin="25,10,10,10" />
				</Grid>
			</HierarchicalDataTemplate>