The sample code below will remove all Click events from button1

public partial class Form1 : Form{        public Form1()        {            InitializeComponent();            button1.Click += button1_Click;            button1.Click += button1_Click2;            button2.Click += button2_Click;        }        private void button1_Click(object sender, EventArgs e)        {            MessageBox.Show("Hello");        }        private void button1_Click2(object sender, EventArgs e)        {            MessageBox.Show("World");        }        private void button2_Click(object sender, EventArgs e)        {            RemoveClickEvent(button1);        }        private void RemoveClickEvent(Button b)        {            FieldInfo f1 = typeof(Control).GetField("EventClick",                 BindingFlags.Static | BindingFlags.NonPublic);            object obj = f1.GetValue(b);            PropertyInfo pi = b.GetType().GetProperty("Events",                  BindingFlags.NonPublic | BindingFlags.Instance);            EventHandlerList list = (EventHandlerList)pi.GetValue(b, null);            list.RemoveHandler(obj, list[obj]);        }    }}

or

void OnFormClosing(object sender, FormClosingEventArgs e){    foreach(Delegate d in FindClicked.GetInvocationList())    {        FindClicked -= (FindClickedHandler)d;    }}

or

Directly no, in large part because you cannot simply set the event to null.    Indirectly, you could make the actual event private and create a property around it that tracks all of the delegates being added/subtracted to it.    Take the following:    List
     
       delegates = new List
      
       ();    private event EventHandler MyRealEvent;    public event EventHandler MyEvent    {        add        {            MyRealEvent += value;            delegates.Add(value);        }        remove        {            MyRealEvent -= value;            delegates.Remove(value);        }    }    public void RemoveAllEvents()    {        foreach(EventHandler eh in delegates)        {            MyRealEvent -= eh;        }        delegates.Clear();    }