Set input focus to a control; the Literal.Focus base control method is not supported on a System.Web.UI.WebControls.Literal control.
The System.Web.UI.WebControls.Literal control overrides the System.Web.UI.Control.Focus method of the base class. The Literal.Focus method of a System.Web.UI.WebControls.Literal control always throws an exception to indicate that the Literal.Focus method is not supported on a System.Web.UI.WebControls.Literal control.