Wpf ComboBox触发器

<StackPanel>
    <ComboBox x:Name="myComboBox">
        <ComboBoxItem Content="Option 1" />
        <ComboBoxItem Content="Option 2" />
        <ComboBoxItem Content="Option 3" />
    </ComboBox>
    
    <TextBlock Text="Other content" Visibility="Collapsed">
        <TextBlock.Style>
            <Style TargetType="TextBlock">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding ElementName=myComboBox, Path=SelectedItem.Content}" Value="Option 1">
                        <Setter Property="Visibility" Value="Visible" />
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </TextBlock.Style>
    </TextBlock>
</StackPanel>