Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
When you create an empty WinForms application with Visual Studio, the template has the STAThread attribute in the main application class.
I have been reading some docs about it, but I’m not sure if I understood it at all.
Really I have some questions about it:
Because it is required by the ActiveX object model. And you can drop ActiveX controls on a WinForm (so it is there for compatibility) OR some .NET classes use native controls which require that attribute.
It means the thread runs in the single-threaded apartment model.
If the attribute is removed, the behavior is undefined. The program may fail at random, with sometimes sensible error messages. For example, things may work now, then break with a service pack.