Instable focus of WPF apps

Question

If I have problems with WPF, then it always concerns the Focus-Management. There are cases, my App loses totally focus so that another application gains the focus an

Answer 1

+1 As I have also faced similar issues in my application. I am working on a VS like application(user can add(from toolbox) and configure controls in a Canvas) and focus is lost mysteriously after various commnads are executed like Delete etc. I have to use Canvas.Focus() explicitly to reset the focus and that too doesn't work sometimes.