C# WinForms: How to set Main function STAThreadAttribute

Question

I get the following exception when calling saveFileDialog.ShowDialog() in a background thread:

Current thread must be set to single thr

Answer 1

this should work if you are creating the thread in which you call the showDialog:

var thread = new Thread(new ParameterizedThreadStart(param => { saveFileDialog.ShowDialog(); }));
 thread.SetApartmentState(ApartmentState.STA);
thread.Start();