Extend existing report items

Hi,

I'm totally new to SSRS2005 and I was wondering if I could extend the existing report items. For instance, I'd like to add a few extra properties to the textbox report item. I tried wrting a custom Textbox control that inherits from System.Windows.Forms.Textbox. When I imported the dll in VS, the new textbox showed up in the toolbox, but it was grayed out.

Any idea what I'm missing here?

Thanks,
Phil
Best off writing your own and call the RS webservice.

http://msdn2.microsoft.com/en-us/library/aa179578(SQL.80).aspx|||But I want to inherit all existing functionality of the textbox... So why would I create my own from scratch?
|||Sorry, completely barking up the wrong end of the stick.

I was on about report parameter selection.

I'm guessing you can't do it.

Use Crystal Reports instead: from what I have read on these forums, it seems to do most things that RS can't.

The only reason people use RS is because they are too tight to shell out for a decent product (this has been the case where I've worked)

RS is "free". How much time have I wasted at what cost to the companies I have worked for trying to get it to do the simplest of things. Suddenly it's not so cheap, but then MS have figured out that bean counters are incapable of factoring in all this wasted time.

If only dev's got to make the purchasing decisions......