asp.net building controls: I am creating a web control. At design time I would like the designer to
inspect the control being hosted, to see if there is any inner content and if
there isn't then programmatically set the server control's markup.
for example <My:Control runat="server"></My:Control> would be changed to
<My:Control runat="server">Some markup</My:Control>
if SetEditableDesignerRegionContent is called by the designer the markup is
changed.
If I call it myself, however it's not changed. The same appears to be true
for Tag.SetContent and almost every other imaginable sample I've seen on the
web.

I have to assume that for a very basic procedure that I am simply missing
something. Tag.SetContent seems to do what i need it to do, except it won't
work if I call it.

Any tips?

Hi Nathaniel,

Based on my understanding, you have a custom server control which has
ParseChildrenAttribute set to false and PersistChildrenAttribute set to
true:

[ParseChildren(false), PersistChildren(true)]
public class Class1 : WebControl
{
}

This will let user add content inside the control tag:

<cc1:Class1 ID="Class1_1" runat="server">
test
</cc1:Class1>

The objective is to add this default content when user didn't provide one.
Please feel free to let me know if I've misunderstood anything.


Currently I'm still researching on it and I will get back to you as soon as
possible. Thank you for your patience and understanding.


Sincerely,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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