I have made a user control using c#.net and made the control as COM
interop along with COM visible true. It built & registered by
"regasm" successfully. My control is visible in power point 2010 under
"More Controls" option
and can able to add it in slide. The problem is after embedding the
control in slide (in design time) a red color "X" sign display inside
the control instead of the actual visual appearance of user control. but
when i start slide show, the User Control
display its own interface (GUI) and when i stop slide show again the
interface disappear & display red "X" sign. How do i correct this
problem??
Office Version: Office 2010
Program:PowerPoint
Operating System:Windows XP
Visual Studio : 2008
Working Framework : 3.5
Using Language : C#