title: CheckBoxField columns in ASP.NET GridView are disabled even if ReadOnly set to false
body: <p>I have a GridView with two CheckBoxField columns. They both have ReadOnly property set to false, but html code generated for them has attribute disabled="disabled". So the value cannot be changed. </p>
  
  <p>Generated HTML example:</p>
  
  <pre><code>&lt;span disabled="disabled"&gt;&lt;input id="ctl00_ContentBody_GridView_ctl02_ctl01" type="checkbox" name="ctl00$ContentBody$GridView$ctl02$ctl01" checked="checked" disabled="disabled" /&gt;&lt;/span&gt;
  </code></pre>
  
  <p>Can anybody say how to figure it out?</p>