https://www.dotnetzone.gr:443/cs/blogs/birbilis/archive/2013/11/22/gotcha-net-point-and-pointconverter-inconsistency-in-string-format-used.aspxI have submitted the following issue to Microsoft Connect (product feedback center): http://connect.microsoft.com/VisualStudio/feedback/details/809084/point-class-issue-with-two-way-databinding Point class issue with two-way databinding   In Silverlight,elCommunityServer 2.1 SP3 (Build: 20423.1)