Catch exception help please

Question

Doing simple date work and trying to validate a date. this.Label1.Text="Bad Date was attempted"; private void TextBox1_TextChanged(object sender, System.EventArgs e) { try { Convert.ToDateTime( this.TextBox1.Text.ToString()); } catch(Exception ee) { this.Label1.Text="Bad Date was attempted"; } What is the catch() expression to catch a bad date like 18/31/2004 Exception ee is missing it? TIA