Sending button events programmatically

Suppose I have a button with the following code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
MessageBox.Show("I just got clicked!")
End Sub

If, for some reason, I want to send a button click event to Button1 programmatically without the user actually clicking on the button, how would I do it? I read about "RaiseEvent" and "WithEvents" and "Delegate", but it's rather confusing.

The following code in C#:

private void button1_Click(object sender, System.EventArgs e)
{
MessageBox.Show("hello");
}

private void button2_Click(object sender, System.EventArgs e)
{
System.EventArgs f = new System.EventArgs();
this.button1_Click(this, f);
}