WPF TextBlock Underline

Question

I have a textblock of width say 500, but my string is just say "H" but I want to underline the whole textblock width not just under H what can I do?

Answer 1

You should use the property "TextDecorations" of the TextBlock. Like that:

 <TextBlock Text="H" TextDecorations="Underline"/> 

Answer 2

Just to add my 2 cents, The same effect as Talia's answer can be achieved at runtime through this code:

YourTextBlock.TextDecorations = System.Windows.TextDecorations.Underline; 

For some reason VS2010 doesn't show Intellisense for the RHS, but it compiles and runs correctly.