foreach (Control control in ctls)50 {51 if (control is TextBox)52 {53 (control as TextBox).Enter += new EventHandler(SetTextBoxOnEnterStyle);54 (control as TextBox).Leave += new EventHandler(SetTextBoxOnLeaveStyle);55 }56 57 if (control.Controls.Count > 0)58 {59 IterateControlsSetTextBox(control.Controls);60 }61 }