disable comboboxlist with a click of a radiobutton asp.net

Question

Am trying to disable my comboboxlist when I press a specific selection from my radiobutton list, or re-enable the comboboxlist If I make a different selection from radiobuttonlist.
Am using postpacks in my asp as well, but am I cant find how to make this work.
When I double click the radiobutton list and I get the automatic method generation.
I don't know what kind of attributes should I use to make the radiobuttons work when changed.
I tried a few combinations but none seems to work.

Any ideas?

Answer 1

use AutoPostBack="true" property as follow

<asp:DropDownList ID="MyDropDown" runat="server" AutoPostBack="true" 
    onselectedindexchanged="MyDropDown_SelectedIndexChanged">

and

<asp:RadioButtonList id="docList" runat="server" AutoPostBack="true" 
      OnSelectedIndexChanged="loginUser" />