private void BindQuestion( )
        {
            Protection    protect = new Protection(TextUtility.GetRealPath("/config/protection.xml"));
            List <string> pList   = protect.GetProtectionQuestions( );

            ddlQuestion1.DataSource = pList;
            ddlQuestion1.DataBind( );
            ddlQuestion2.DataSource = pList;
            ddlQuestion2.DataBind( );
            ddlQuestion3.DataSource = pList;
            ddlQuestion3.DataBind( );
        }