HTML in custom control lost when property changed in design view

[Christopher Strolia-Davis]

I've searched in vain to find the answer to this question, so hopefully
someone can help me.

I am creating a web custom control that will have other nested content. I
have set parseChildren attribute to false, so I can embed the content in my
finished output. When the control has been placed in my page, if I go to
design view and change a property, when I move back to HTML view, all content
between the opening and closing tags is removed.

for instance, if I have code like:

<mc:MyControl MyAttribute='Something'>
<ul>
<li>some text</li>
</ul>
</mc:MyControl>

if I go to design view and change "MyAttribute" to "Something Else" and
return to
HTML view I get

<mc:MyControl MyAttribute='Something Else'>
</mc:MyControl>

All the code inside the control is lost.

Is there some sort of property or setting that I need to change to make sure
that this doesn't happen?

 

[aa7im]

Try setting the PersistChildren attribute

http://msdn.microsoft.com/library/d...emWebUIPersistChildrenAttributeClassTopic.asp

 

[aa7im]

Try setting the PersistChildren attribute

http://msdn.microsoft.com/library/d...emWebUIPersistChildrenAttributeClassTopic.asp

 

[aa7im]

Try setting the PersistChildren attribute

http://msdn.microsoft.com/library/d...emWebUIPersistChildrenAttributeClassTopic.asp

 

[Christopher Strolia-Davis]

Tried setting the persistChildrenAttribute both to true and then to false and
neither of these modifications seems to change the outcome.

 

[Christopher Strolia-Davis]

Okay,

I think I'm getting close to an answer now. It seems as if I need to make a
controlbuilder for the inner content of the control (or something like that).
I still have to work out the details.

I also found that if I set parseChildren to true, I can also specify a
default property for content that is not a property value equivalent.

If someone knows I'm on the wrong track, I'd appreciate it if you can let me
know asap so I don't end up spinning my wheels for nothing.

 

[Christopher Strolia-Davis]

Okay,

I've found the(an) answer to my issue, and am posting it here in case it
helps anybody.

If I create a string property in the webcontrol and set the following
meta-data for it:
<PersistenceMode(PersistenceMode.InnerDefaultProperty)>

it seems to hold on to the inside content.

Later,

Chris

 

[Christopher Strolia-Davis]

My Bad,

Apparently I only thought this was the answer because I tested it incorrectly.

I'm still having the problem.

If anyone knows the "real" answer to the problem, please let me know.

 

[Christopher Strolia-Davis]

I don't know if this is the best answer, but it worked.

I found that if I simply inherit from the system.web.ui.webcontrols.panel
control, which has much of the core functionality I was already looking for,
I was able to get past this issue. (How the panel control handles this issue,
I have no idea).

Just thought I'd let everyone know.