The solution is to mention events in the form load:
tsMenuSubscribe.Click += tsMenuSubscribeClick;
tsMenuUnsubscribe.Click += tsMenuUnSubscribeClick;
And, describe them anywhere in the code:
private void tsMenuSubscribeClick(object sender, EventArgs e)
{
NCTBuddy n = new NCTBuddy();
n.ButtonText = "Subscribe";
n.Show();
}
private void tsMenuUnSubscribeClick(object sender, EventArgs e)
{
NCTBuddy n = new NCTBuddy();
n.ButtonText = "UnSubscribe";
n.Show();
}