title: masterpage with usercontrol problem
body: <p>I have a masterpage and 2 <code>usercontrols(A.ascx &amp; B.ascx)</code> on this masterpage. In these one of them <code>usercontrol(A.ascx)</code> have another <code>usercontrol(C.ascx)</code>. And I use this masterpage on <code>default.aspx</code> page. On this <code>Default.aspx</code> page we have one more usercontrol i.e. <code>(D.ascx).</code> </p>
  
  <p>Now my problem is that I want to changeover the css class of <code>C.ascx</code> usercontrol on changing in <code>D.ascx.</code> Or how to call and access any function of <code>c.ascx</code> in user control <code>d.ascx.</code></p>
  
  <p>Hence this <code>d.ascx</code> in on <code>default.aspx</code> page and <code>c.ascx</code> is in masterpage usercontrol's usercontrol.</p>