Underline or Hyperlink?

In Spread WPF version 1.0.7.0 I can’t figure out how to make the text in a cell a Hyperlink. I am trying to make a hyperlink that goes to another worksheet in the workbook. I gave up because it seems I have to use an iExcel sheet, but my application already has a ton of code written for the normal spread control. After giving up on the hyperlink, I figured I would just manually create one, but I can’t even figure out how to make the text in a cell underlined. I found that the online help was better than my local help copy in this regard, but it must be that underlined text was not implemented in the version I am using; the online help refers to things that do not show for me when creating new style info.