The prompt "ActiveX control cannot be imported" is displayed when the QuickTime player is embedded in C # winform. Make sure it is correctly registered ." Error

C #-can't register. dll with regasm in Windows 7-Stack Overflow
Http://stackoverflow.com/questions/14442850/cant-register-dll-with-regasm-in-windows-7

According to this article, we learned that it is a bug in. net4.0 under vs2010. It takes kb2066987 to fix this problem. However, after searching for this patch package for a long time, we found that paying users can get the result ....

As a result, the project framework was first changed to 3.5, the project was cleared, compiled, and then the project. net version 4.0, the problem was solved magically, so it was recorded and shared.