RE: custom container control - wrapping child controls
- From: stcheng@xxxxxxxxxxxxxxxxxxxx (Steven Cheng [MSFT])
- Date: Mon, 04 Aug 2008 04:07:08 GMT
Hi Gerry,
How are you doing?
Regarding on this issue, I've performed some further research and discussed
with some other ASP.NET engineers.
So far we can think of one way to achieve this, but I think it is total
overkill. Whenever your template is persisted (when GetPersistenceContent()
is called), you could examine your control tree and modify it to make sure
it contains the container controls. You could then persist that control
tree into text, then re-parse it into an ITemplate and set your property to
that value. Then when ASP.NET persists your template it'll persist the
modified template.
Some scenarios that are a bit similar to this are that the MultiView
control can only contain View controls. Similarly, WebPartZones can only
contain WebParts. You might want to dig into their designer and runtime
code to see how they handle this. I've used the reflector tool to inspect
the code abit and find some code logic for gettting the current inner
content of control. But may still need more effort on setting the content.
Have you got any progress on your side?
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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Content-Transfer-Encoding: 7bit
From: stcheng@xxxxxxxxxxxxxxxxxxxx (Steven Cheng [MSFT])
Organization: Microsoft
Date: Thu, 24 Jul 2008 07:43:56 GMT
Subject: RE: custom container control - wrapping child controls
f
Hi Gerry,
From your description, you're developing a custom server control whichcontains some inner controls, and you want to make some certain kind of
nested subcontrols be wrapper with another control automatically at
design-time, correct?
I've performed some research on this. So far for nested controls, the
custom control itself should be set as "ParseChildren" as false so that
inner markup will be interpreted as control instances. I think you've also
ready done this, correct? Generally, for design-time custoimzation, we
have two tools:
1. A custom control designer
2. A custom control parser
So far I only got some interfaces for customzing the displaying html from
Control Designer , but not the inline markup of the control. Also,
controlbuilder seems focus on the nested control's parsing and population
at runtime. Is there are any particular requirement in your page or
control that it will need such an wrapper element? Maybe we can also look
for some other means on this.
I'll do some further research on this and inform you if I get any new
finding.
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
Delighting our customers is our #1 priority. We welcome your comments and
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From: "gerry" <germ2@xxxxxxxxxxxxxxxx>
Subject: custom container control - wrapping child controls
Date: Wed, 23 Jul 2008 09:41:31 -0400
contain
I am trying to create a custom container control that will only ever
a specific type of control.container
At design time, when a control of a different type is added to the
I would like to wrap the control in the proper control type - which isalso
a container.control
At design time I want to be able to turn this :
<my:container>
<asp:textbox />
</my:container>
into this :
<my:container>
<my:wrapper>
<asp:textbox />
</my:wrapper>
</my:container>
It is no problem to detect what type of object is being added to the
and I can do the wrapping easy enough for the rendered control , but Ican't
see how to change the physical markup as displayed in the designer and
stored in the .aspx file.
Webparts does something similar but it looks like the designer source has
not been made available.
Anyone know how to do this or have any ideas on how this might be done ?
Gerry
.
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