Does a UserControl have something similar to the ‘AcceptButton’ property of a Form?

[Holly_vi]

At the beginning, when I click ‘Enter’ the 'MyAcceptButton_Click' event is fired, and I see the message box. (So far so good).
But, then the message box is never shown again because of the ‘if sentence’.

private void MyAcceptButton_Click(object sender, System.EventArgs e)
{
     if (!EnterKeyPressed)
    {
         MessageBox.Show("Works!");
         EnterKeyPressed = true;
     }
}

But, what does the if sentence suppose to do?

I took your sample, and added another UserControl called DummyUserControl to it.
This is what I want to happen:
- When ‘AcceptButUC’ is active, clicking ‘Enter’ fires ‘MyAcceptButton_Click’ and displays the message box.
- When ‘DummyUserControl’ is active, clicking ‘Enter’ does not fire ‘MyAcceptButton_Click’

I’ve attached your revised solution.