thanks a lot Jason. You have helped me solving my issue. 

Manish Kumar

This won't work as you still need to get access to the AJAX component. That said, you should be able to get the id of each control and use that to get the control. If you modify your logic to the following then it should work:

function DisableUIOnPause(disable) {
    var disableBool = disable == '1';
    $('[id*=txtbxAns').attr('disabled', disableBool);
 
    $('div[id*=wsdCL]').each(function (i) {
        var control = $find(this.id);
        control.set_enabled(!disableBool);                
    });
}

Please let me know if you have any questions or concerns about this approach.

thanks Jason for your suggestion but your solution seems to be not working in my case. I am using slider inside the repeater control and on the click of the disable button i am retrieving repeater slider using down below code. after running thus code I am still not able to make the slider disabled. I still able to slide the slider. please suggest some help on this

function DisableUIOnPause(disable)

{

if(disable == '1')

{

$('[id*=txtbxAns]').attr('disabled',true);
$('[id*=wsdCL]').each($(this).set_enabled(false));

}

else

{

$('[id*=txtbxAns]').attr("disabled", false);

$('[id*=wsdCL]').each($(this).set_enabled(true));

}

}

thanks

Manish Kumar