Hide form instead of closing when close button clicked

Question

When a user clicks the X button on a form, how can I hide it instead of closing it?

I have tried this.hide() in FormClosing but

Answer 1

I've commented in a previous answer but thought I'd provide my own. Based on your question this code is similar to the top answer but adds the feature another mentions:

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if (e.CloseReason == CloseReason.UserClosing) 
    {
        e.Cancel = true;
        Hide();
    }
}

If the user is simply hitting the X in the window, the form hides; if anything else such as Task Manager, Application.Exit(), or Windows shutdown, the form is properly closed, since the return statement would be executed.