title: cannot change GridView Caption
body: <p>It seems to be impossible to change GridView .Caption after it has been set once.</p>
  
  <p>Once I set caption and then  change it within postbacks, in the code all seem to be ok, on page PreRender, GridView PreRender and wherever </p>
  
  <p>I have no idea what to do - on page (and GridView also) PreRender event  while debugging the  .Caption is proper, but it renders with old caption anyway</p>
  
  <p>Page seems to be render with set-once caption although I changed it.</p>
  
  <p>I even tried to place it to updatePanel and update it, but it didn't help.</p>
  
  <p>Can anybody suggest the reason?
  thanks in advance.</p>