this.buttonNW.Click += new System.EventHandler(this.button_Click);
this.buttonN.Click += new System.EventHandler(this.button_Click);
this.buttonNE.Click += new System.EventHandler(this.button_Click);
private void button_Click(object sender, EventArgs e) {
Button thisButton = (Button)sender;
switch (thisButton.Name) {
case "buttonNW":
MessageBox.Show("North West button clicked");
break;
case "buttonN":
MessageBox.Show("Northern button clicked");
break;
case "buttonNE":
MessageBox.Show("North East button clicked");
break;
}