How to handle close event of PowerShell window if user clicks on Close('X') button

Question

I want to run some code before PowerShell 2.0 window is closed. For this I tried:

PS > register-engineevent PowerShell.Exiting -action {get-process | out-file c:

Answer 1

The unhandled exception occurs because garbage collection has already disposed your handler by the time the unmanaged method is called. You can get around that by storing it in a static field:

private static HandlerRoutine s_rou;

public static void SetHandler()
{
    if (s_rou == null)
    {
        s_rou = new HandlerRoutine(ConsoleCtrlCheck);
        SetConsoleCtrlHandler(s_rou, true);
    }
}