Hi,
How can I keep a form in vb.net Arcobject in front of arcmap always ?
If the form is modal it should always appear on top. If the form is modeless you should be able to set the TopMost property to true, which should keep it on top.
You can also use this code when showing the form to set its owner as the ArcMap application
MyFormInstanceName.Show(System.Windows.Forms.Control.FromHandle(My.ArcMap.Application.hWnd))