Program to detect windows shut down

Hi,
I have an application and this application needs to close when the window shutdown happen. How can i detect that the system is shutting down from a C# program

if it is a windows application, use the FormClosing event

Code:

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private void Form1_FormClosing(object sender, FormClosingEventArgs e) {
  if (e.CloseReason == CloseReason.WindowsShutDown) {
    //
  }
}

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Subscribe to the event System.Events.SessionEnded.