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this.close();					

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((Form)this.Parent).Close();					

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Control c = this.Parent;
while (c != null) 
{
  Form f = c as Form;
  if (f != null)
  {
    f.Close();
    break;
  }
  c = c.Parent;
}					

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        public event EventHandler<ButtonEventArgs> CloseRequest;

        protected virtual void OnCloseRequest(ButtonEventArgs e)
        {
            EventHandler<ButtonEventArgs> ev = CloseRequest;
            if (ev != null)
                ev(this, e);
        }					

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OnCloseRequest();					

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        public event EventHandler<ButtonEventArgs> CloseRequest;

        protected virtual void OnCloseRequest(ButtonEventArgs e)
        {
            EventHandler<ButtonEventArgs> ev = CloseRequest;
            if (ev != null)
                ev(this, e);
        }

        public class ButtonEventArgs : EventArgs
        {
            public ButtonEventArgs()
            {
            }
        }					

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                OnCloseRequest(new ButtonEventArgs());					

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                    BarcodeNeuUserControl controlNeu = new BarcodeNeuUserControl(employee);
                    controlNeu.BarcodeText = barcodeText;
                    controlNeu.CloseRequest += CloseForm; // Das hier ist neu dazugekommen
                    controlNeu.Dock = DockStyle.Fill;
                    Controls.Add(controlNeu);					

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        private void CloseForm(object sender, BarcodeNeuUserControl.ButtonEventArgs e)
        {
            this.Close();
        }					

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enum CloseReasons
{
    None,
    UserForced,
    ControlNeedsReload,
}					

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public class CloseEventArgs : EventArgs
{
    public CloseReason Reason {get; private set;}
    
    public CloseEventArgs(CloseReason reason)
    {
        Reason = reason;
    }
}					

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public event EventHandler<CoseEventArgs> CloseRequest;					

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protected virtual void OnCloseRequest(CloseEventArgs e)
{
    if (CloseRequest != null) CloseRequest(this, e);
}					

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private void CloseForm(object sender, CloseEventArgs e)
{
    if (e.Reason != CloseReason.None) this.Close();
    else MessageBox.Show("No given close reason.");
}					

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public event EventHandler<EventArgs> CloseRequest;					

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public event EventHandler CloseRequest;					

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OnCloseRequest(new EventArgs())					

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OnCloseRequest(EventArgs.Empty)