Drawing control to memory (Bitmap)

As the control has no parent container, you need to call Measure and Arrange in order to do a proper layout. As layout is done asynchronously (see Remarks in Measure and Arrange), you may also need to call UpdateLayout to force the layout to be updated immediately. public BitmapSource RenderToBitmap(UIElement element, Size size) { element.Measure(size); … Read more

rails:3 Devise signup Filter chain halted as :require_no_authentication rendered or redirected

The mentioned line on Devise’s Controller makes sense in general cases: a logged in user can’t sign up. As you’re on a case where only an admin can create a user, I would suggest that you don’t use Devise’s controller on Registerable module and write your own controller with your own rules. You can write … Read more