My bound contents are showed as empty string in the UI design-mode. I want to display some faked value for those contents but I don\'t know how to.
empty
Plea
You could use the DesignMode property to find out if you are at design time ( http://msdn.microsoft.com/en-us/library/c58hb4bw(vs.71).aspx )
There are further thoughts but no real conclusions on ways to do it at this question: What approaches are available to dummy design-time data in WPF?