You can set a value to a html element on client from server-side.


input elemets (textbox)



dropdownlist
option 1 option 2 option 3 option 4 option 5 option 6 option 7 option 8 option 9


textarea
initial text


radio button
checked / unchecked



Note: The radio/checkbox button can't be set as checked/uncheked using the SetValue method.
You need to set it manually at the end of the callback.

ASPX
<input type="radio" id="radioElement" />
<input type="button" value="Callback now!" onclick="ob_post.post(null, 'ServerSetValueRadio', function(checked){document.getElementById('radioElement').checked = checked;});"/>

C#
public bool ServerSetValueRadio() { /* this will return true if need the radio button as checked */ return true; }



See also SetValue tutorial.