FindControl() method and NamingContainer

[Dan]

Hi,

I created a custom control (ParentCustomCo ntrol) which is using a
custom template (implementing ITemplate interface), in the
instantiateIn method of this template I create all the controls I need
(Label, textboxes, button) and I also create another custom control
(ChildCustomCon trol) which is using a custom template too.

My problem comes when I'm trying to access the child Controls of
ChildCustomCont rol with the FindControl method. I can access every
others controls with a call like this :

(this.FindContr ol("MyButton") as ImageButton)

I can also access the ChildCustomCont rol
(this.FindContr ol("ChildCustom Control1") as ChildCustomCont rol)) but
his childs are not accessible... I always get a null reference error,
I think it's could be related to the NamingContainer , because only the
controls created in the the InstantiateIn method of ChildCustomCont rol
are innaccessible.. .

Anyone can help ?

Thanks !

[=?Utf-8?B?TWlsb3N6IFNrYWxlY2tpIFtNQ0FEXQ==?=]

Dan,

Due to performance reasons FindControl method does not perform recursive
search, which means if you want to find a control within instantiated
template, you have to call FindControl of the container. In your case you
first obtain Child

ChildCustomCont rol ctrl = this.FindContro l("ChildCustomC ontrol1") as
ChildCustomCont rol;
TextBox txt = ctrl.FindContro l("whatever") as TextBox;

Also, make sure all the controls are created and template instantiated in
CreateChildCont rols(), and call EnsureChildCont rols always before refreing
control contained in the template.

Hope this helps
--
Milosz
"Dan" wrote:

Hi,

I created a custom control (ParentCustomCo ntrol) which is using a
custom template (implementing ITemplate interface), in the
instantiateIn method of this template I create all the controls I need
(Label, textboxes, button) and I also create another custom control
(ChildCustomCon trol) which is using a custom template too.

My problem comes when I'm trying to access the child Controls of
ChildCustomCont rol with the FindControl method. I can access every
others controls with a call like this :

(this.FindContr ol("MyButton") as ImageButton)

I can also access the ChildCustomCont rol
(this.FindContr ol("ChildCustom Control1") as ChildCustomCont rol)) but
his childs are not accessible... I always get a null reference error,
I think it's could be related to the NamingContainer , because only the
controls created in the the InstantiateIn method of ChildCustomCont rol
are innaccessible.. .

Anyone can help ?

Thanks !