C# using ints in Textbox.Visible

If you had multiple labels, label1, label2 etc which corresponded to textBox1, textBox2 etc and all the label's Click events were mapped to a single eventhandler, then you could do something like this:

private void label_Click(object sender, EventArgs e)

{

   Label lbl  = (Label)sender;

   int number = int.Parse(lbl.Name.Substring(5));

   TextBox tb = (TextBox)this.Controls["textBox" + number.ToString()];

   tb.Visible = true;

}