C# Windows application prevents Windows from shutting down / logging off

Question

I have written a C# Windows Forms application, not a service (it is only used when the user is logged in and has a graphical user interface) that has a background thread run

Answer 1

public Form1()
{
    InitializeComponent();

    this.FormClosing += new FormClosingEventHandler(Form1_FormClosing);
}

void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    // Or any of the other reasons suitable for what you want to accomplish
    if (e.CloseReason == CloseReason.WindowsShutDown)
    {
        //Stop your infinite loop
    }
}

Answer 2

I think Capture console exit C# should also be usable in your scenario.

Apart from that, maybe it is sufficient to set up your thread as background thread?

Answer 3

Take a look at the Microsoft.Win32.SystemEvents.SessionEnding event.

Answer 4

You call that thread a "background thread" but does it have IsBackground = true; ?
The system will only stop a thread that does.