c# - A controls disabled through server side is still enabled in client side why? -

i have .net control. disabling list items of controls using attribute property. in client side validation checking whether control enabled or disabled. j query written still says controls enabled if disabled , fires alert. kind of struggling can me please..

here code

    private void enabledisablecontrol(listcontrol control, boolean value)     {         if (value == true)         {             foreach (listitem item in control.items)                {                 item.attributes.remove("checked");                 item.attributes.add("disabled", "disabled");             }         }         else         {              foreach (listitem item in control.items)             {                 item.attributes.remove("disabled");              }         }      } 

i used function disabled 1 of control

    enabledisablecontrol(rdb_control, true); 

here jquery

   if ($("#<%=rdb_control.clientid%> input[type='radio']").is(':enabled')) {                 if ($("#<%=rdb_control.clientid%> input[type='radio']:checked").length == 0) {        alert("required");                                         }              } 

here control disabled still alert. whereas shouldn't check if control disabled.

here html looks disables span

   <table id="ctl00_m_g_c09fd465_0ae4_479b_8fc6_21a7de645003_ctl00_rdb_control" class="chklistunknown" border="0">                     <tr>                         <td><span disabled="disabled"><input id="ctl00_m_g_c09fd465_0ae4_479b_8fc6_21a7de645003_ctl00_rdb_control_0" type="radio" name="ctl00$m$g_c09fd465_0ae4_479b_8fc6_21a7de645003$ctl00$rdb_control" value="yes" /><label for="ctl00_m_g_c09fd465_0ae4_479b_8fc6_21a7de645003_ctl00_rdb_control_0">is</label></span></td>                     </tr><tr>                         <td><span disabled="disabled"><input id="ctl00_m_g_c09fd465_0ae4_479b_8fc6_21a7de645003_ctl00_rdb_control_1" type="radio" name="ctl00$m$g_c09fd465_0ae4_479b_8fc6_21a7de645003$ctl00$rdb_control" value="no" /><label for="ctl00_m_g_c09fd465_0ae4_479b_8fc6_21a7de645003_ctl00_rdb_control_1">not</label></span></td>                     </tr><tr>                         <td><span disabled="disabled"><input id="ctl00_m_g_c09fd465_0ae4_479b_8fc6_21a7de645003_ctl00_rdb_control_2" type="radio" name="ctl00$m$g_c09fd465_0ae4_479b_8fc6_21a7de645003$ctl00$rdb_control" value="unknown,yes" /><label for="ctl00_m_g_c09fd465_0ae4_479b_8fc6_21a7de645003_ctl00_rdb_control_2">unknown</label></span></td>                     </tr>                 </table>   

well, problem in server-side code. disabling span elements, cannot disabled. when jquery asks whether radiobuttons enabled, answer yes... because enabled. no radiobutton has disabled attribute.

you've got change server method , dig further in control tree find , disable inputs, not spans.

the checklistcontrol has enabled property. set false:

private void enabledisablecontrol(listcontrol control, boolean value) {     control.enabled = value; } 

it should disable checkboxes automatically.