WPF TextBlock Overlaps Ellipse

Question

I am trying to create this in WPF (I realize I could just use an image, but I am trying to learn WPF):

(source)

This is what I have so far but it isn't producing the desired result, in that, the textbox seems completely hide the ellipse whereas it should simply have a transparent background:

<StackPanel>
    <TextBlock HorizontalAlignment="Left" Margin="144,207,0,0" TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top"/>
    <Ellipse HorizontalAlignment="Left" Height="52" Margin="142,189,0,0" Stroke="Black" VerticalAlignment="Top" Width="52"/>
</StackPanel>

Answer 1

You can put things like this in a viewbox to make scaling easier, something like this. You'll need to remove the stack panel, it's going to stack items one on top of the other which isn't what you're after here. I used a grid in this case.

<Viewbox Width="100" Height="100">
    <Grid Width="20" Height="20">
        <Ellipse Stroke="Black"/>
        <TextBlock HorizontalAlignment="Center" Text="i" TextAlignment="Center" VerticalAlignment="Center"/>
    </Grid>
</Viewbox>

Answer 2

Or you can use the unicode character: ⓘ

code 0x24D8

 <TextBlock Text="ⓘ" FontSize="52" />