C#: Get Element Name with Click Event Handler on Panels

I have a question regarding event handling on C#:

I have 5 Panels, and I'd like to get each Name Property on Click.

I have tried the following on Form1_Click():

  private void Form1_Click(object sender, EventArgs e)
    {

        Panel panelClicked = sender as Panel;

        if (panelClicked  != null)
        {
            MessageBox.Show(panelClicked.Name);
        }

    }

Wouldn't this work for Panel Elements? It doesn't for me. Any idea?

Regards