I also can not post the code as is, I asked Michel to look into it.

In the meantime, check http://forums.asp.net/t/1239550.aspx I think your problem may be related.

>>>Hi,
>>>I use VS 2008.
>>>I create control which contains GridView asp control.
>>>Couple modifications in Source mode - and.. control no more visible in Design mode.. I already 10 times delete it.. recreate again..
>>>Whats happen there?
>>>The problem is.. for example.. I can't no more go to wizard to change a style.
>>>How can I make control visible back in Design mode?
>>>
>>>Thanks
>>>Denis
>>
>>Can you post your control definition? Did you try to re-create UserControl from scratch?
>
>I chreate it as drag drop.. then setup properties.. using wizard. then.. if I modify one property in the Source mode - its disapears.. and no more appears..
>I add another one control on bottom of page.. make some carriage return - and now again..complete design mode is empy
>
>How can I send a source code? I try to use PRE / PRE but I can't add message in this format.. I have error messagebox about this message contains wrong data.