如何在wpf中隐藏和显示内容？

<TextBlock Name="myTextBlock" Visibility="Hidden">Hello, world!</TextBlock>

myTextBlock.Visibility = Visibility.Hidden;

   <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
</Window.Resources>

<TextBlock Name="myTextBlock" Visibility="{Binding IsVisible, Converter={StaticResource BooleanToVisibilityConverter}}">Hello, world!</TextBlock>

myTextBlock.DataContext = this;
IsVisible = false;