Recycler -Ansichtsereignis wird mehrmals angehoben

if(!myholder.btnCheckIn.HasOnClickListeners)
{
        myholder.btnCheckIn.Click += (sender, e) =>
                {
                    if (CheckInClicked != null)
                    {
                        CheckInClicked(this, new CheckInClickArgs { selectedPatient = patient });
                    }
                }
}
Renato Capelo Ventura