I am wanting to show the current time on my screen. I have got it to work using the Text only xaml and {0:HH:mm tt}, but I would like to add it to program into my custom xaml.

Here is the xaml code I am using
<TextBlock x:Name="txtClock" HorizontalAlignment="top" Margin="0,0,0,0" VerticalAlignment="Center" Text="{}{0:HH:mm tt}" TextAlignment="Center" FontSize="30" FontFamily="Consolas" FontWeight="Bold" />


but it is just showing the text {0:HH:mm:ss tt} on the screen and not the actual time like I want it to.