WPF: TextBox Text is not updating

Question

I have a user control that i am using inside a DataTemplate, this UserControl contains a TextBox which is binded with Value p

Answer 1

After days of looking around and a lot of search i found the solution of my problem

After all validation done and assigning old value and updating the dependecy property, i need to cal UpdateTarget() method, to Update the value in my TextBox.

This is what explains the solution better

http://social.msdn.microsoft.com/forums/en-US/wpf/thread/c404360c-8e31-4a85-9762-0324ed8812ef/