title: <apex:selectRadio> how to avoid multiple selection on radio button?
body: <p>How to avoid multiple selection on radio button , i have used apex:repeat and repeat value is bounded to the controller's wrapper class but when i select radio button it allows multiple selection.</p>
  
  <p>below is my code.</p>
  
  <pre><code>&lt;apex:repeat value="{!availableSlosts}" var="as" id="eventlistId"&gt;
                          &lt;tr&gt;
                              &lt;td&gt;&lt;apex:selectRadio value="{!as.selectedEvent}"&gt;
                                       &lt;apex:selectOptions value="{!as.lstRadioValue}"/&gt;
                                  &lt;/apex:selectRadio&gt; 
                              &lt;/td&gt; 
                              &lt;td&gt;{!as.availDate}&lt;/td&gt;
  
                          &lt;/tr&gt;
                      &lt;/apex:repeat&gt; 
  </code></pre>
  
  <p>thanks,</p>