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in my page one dropdown and two radio button. when i select 'unauthorized' from dropdown,two radio buttton will be disable.
how to do this.if javascript is need to use then what is the step.
Posted 14-Feb-13 2:11am
Edited 14-Feb-13 2:41am
joe_j4K
v2
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Solution 1

1. Attach onblur or onfocusout to the dropdown.
2. When the event occurs, JavaScript method defined for the same will be raised
3. In this event, check the selected value of the dropdown
4. If the selected value is 'unauthorized' then find the two radio buttons and disable them
 
Try out!
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Solution 2

Hi Dear
 
please try this
 
function DisableRadioButton() {
            var e = document.getElementById('<%=DropDownList1.ClientID %>');
            var strUser = e.options[e.selectedIndex].text;
            if (strUser == "unauthorized") {
                document.getElementById('<%=RadioButton1.ClientID %>').disabled = true;
                document.getElementById('<%=RadioButton2.ClientID %>').disabled = true;
            }
        }
 
add this line in html onChange="DisableRadioButton();"
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v2

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