Using a RadioButtonList Server Control in a Composite Control

[Greg Larden]

Hi There,

I have a composite server control that wrapps a RadiobuttonList. Which
is populate from a Collection of Objects.

The control is rendered and populated with data properly. On post back
it redraws itself with preserving the selection from the user. But I
can not figure out how to retrieve which radiobutton was selected.

I've created a public property in my Composite Control to expose the
private member "_radiobuttonlist" but the selected value is null on
postback.

I'm totally stumped :|

[sam]

Make sure that you are building your control tree *completely* - from
your radio button list all the way to the main Page object - by the
time Page_Init or Page_Load executes.

This will cause your problem if you don't do this. Usually
EnsureChildControls() is called from Page_Init() - or OnInit()
whichever you use.

Greg Larden wrote:

> Hi There,
>
> I have a composite server control that wrapps a RadiobuttonList. Which
> is populate from a Collection of Objects.
>
> The control is rendered and populated with data properly. On post back
> it redraws itself with preserving the selection from the user. But I
> can not figure out how to retrieve which radiobutton was selected.
>
> I've created a public property in my Composite Control to expose the
> private member "_radiobuttonlist" but the selected value is null on
> postback.
>
> I'm totally stumped :|