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Asked: 2026-05-29T03:52:18+00:00

I have created a library class for a control circuit which communicates through a

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I have created a library class for a control circuit which communicates through a serial port and is used in WinForms. When the class is initialized the serial port is opened

CircuitController controller = new CircuitController("Controller1", COM8, Baud9600, ...);

But what is the appropriate way to close the serial port when I exit the WinForm application? Should this be called on the controller specifically

(On close) --> controller.Shutdown();

Or will the serial port automatically close when the Form is closed?

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1 Answer

  1. Editorial Team

    Per ildjarn’s suggestion:

    The best thing to do here is implement IDisposable, and close your port there. You can find some excellent example code for doing this on MSDN:

    http://msdn.microsoft.com/en-us/library/system.idisposable.aspx

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