Many (or most) of us, coming from the ASP.Net world might be looking for something like the TextMode Property, in a TextBox, so that we could use the ‘Password’ enumeration item.
However, in WPF, since 3.0, it’s been much more direct. There’s actually a ‘PasswordBox’ control to use. All you really need to do to get started is to give it a name and a Password Character (like ‘*’), or stay with the default black dot.
All Things DotNet Discussed – Winforms/ASP.Net/SharePoint/WPF