Waitall for multiple handles on a sta thread is not supported. (original)

When developing winform, you have encountered the need to set main to MTA thread mode, but sometimes some ProgramIt is not supported, such as the clipboard. Therefore, use the following methods to solve thread t = new thread (New threadstart (method ));
T. setapartmentstate (apartmentstate. Sta );
T. Start (); that is, the solution is achieved by setting it to apartmentstate. Sta. Later, when allodrop in winform is set to true, the following error occurs: waitall for multiple handles on a sta thread is not supported. It seems that you still have to identify main as stathread. Therefore, we had to seek a reverse solution. After some painstaking efforts, we were relieved to use the following methods to solve the problem.
Private void waitall (waithandle [] waithandles ){
If (thread. currentthread. apartmentstate = apartmentstate. Sta ){
// Use foreach to wait for each handle in multiple threads
Foreach (waithandle mywaithandle in waithandles ){
Waithandle. waitany (New waithandle [] {mywaithandle });
}
}
Else {
Waithandle. waitall (waithandles );
}
}