I have a tabControl windows form that uses a templated tree-view control. The template contins some buttons and a group box around three of these buttons. Only on one of my screens do I want to display the groupbox; on the rest I want it to be hidden. I use 'this.groupBox1.Hide()' and this works fine. The problem is in using 'this.groupBox1.Show()', which doesn't show the groupbox. What should I be doing?