Useer Control within User COntrol - ng.asp-net-forum.windows-hosting_open_forum

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4/18/2004 9:45:01 PM

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6 Items, 1 Pages 1 |< << Go >> >|

	thenetrealtor
	Asp.Net User

Useer Control within User COntrol

4/18/2004 9:45:01 PM

0/0

I have a simple, or thought it was, Address Control which contains a few drop down lists,
some text boxes, and a bunch of validators.

This control functions properly when added to a page.

Now I added this control to another UC and added that UC to a page, and when I change a ddl, no postback occurs, but when I cause the page to refresh, the event from the ddl is received and processed.

Anyone see something like this before

	FancyKetsup
	Asp.Net User

Re: Useer Control within User COntrol

4/19/2004 1:13:52 AM

0/0

I just duplicated your scenario sort of. I just used dropdowns though. I put one drop in an ascx and then created another ascx and put a dropdown in it and load the 1st ascx into it then loaded the second ascx into an aspx and it worked just fine. Be sure you have auto postbacks set to true and that the validators are not preventing postbacks in someway. Good luck!

Answering a question increases your knowledge asking a question shows your Intelligence!

	thenetrealtor
	Asp.Net User

Re: Useer Control within User COntrol

4/19/2004 7:14:20 AM

0/0

Thanks for the response, but postback is set on all required components.

This may have something to do with my structure. I have a PlaceHolder in a page
template and dynamically load my UC.

This UC contains the second UC WHen a postback should be triggered in the contained
UC, it seems to not cause a postback on the containing page.

	thenetrealtor
	Asp.Net User

Re: User Control within User Control

4/19/2004 12:34:40 PM

0/0

Problem seems to be in the javascript generated for the _doPostBack call, which
is failing for my basepage/template set-up.

I have a BasePage which loads a Template (User Control). This has a form,
the header, content - placeholder, and footer and required html.

When a page is created inheriting from the BasePage, it simply adds the required UC
to the placeholder.

Works nice and simple except it now appears that the javascript generator for the
_doPostBack routine can't deal with the fact the base Form is inherited and thus the
_doPostBack fails, back to the drawing board.

	master4eva
	Asp.Net User

Re: Useer Control within User COntrol

4/20/2004 1:13:59 PM

0/0

It is not to do with the JavaScript.

When you create/insert controls dynamically, you must do so every time that there is a post back. The reason: the page does not persist over HTTP requests. So if I have to request your page, whatever controls that you created dynamically will be lost because HTTP is stateless (it does not remember me by keeping an active connection). When I post back to the server, you will know that I am posting back but you will not know about the controls that you added into the placeholder in the previous request. For postback to be completed successfully, the control that the post back is destined for must exist for the event to be raised... and that is why you recreate the controls throughout every postback.

The other thing that could be wrong is that you are caching the user controls that do not vary the cache version.

-- Justin Lovell

	thenetrealtor
	Asp.Net User

Re: Useer Control within User COntrol

4/20/2004 3:10:27 PM

0/0

I do reload the UC on postback and am not caching. What is weird is that the buttons all work
and are able to post the form but the _doPostBack calls fail to cause a page post on
drop down lists, (the buttons do not call doPostBack)

When I force the page post, button, the events occur
and are processed.

It may not be the javascript but the page is not posted back, hence no UC reload and no
ViewState application. The proper Page is detailed in the form action so thats why I assume
the javascript.

Weird stuff, but have dumped the template structure and am using a single page and
dynamic UC loading and all works fine now.

6 Items, 1 Pages 1 |< << Go >> >|

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