Losing user control

[David Colliver]

Hi all,

I am setting up a tab strip in an aspx page. I am using
link buttons to switch between the tabs (at the moment,
it is just link buttons, no tabs...)

Under each link button, I intend to add a usercontrol. I
have written one so far. I am adding the UC dynamically
in the button click event of my tab strip.

I am also setting properties and calling a method in the
UC.

My UC is set up like a wizard using back and next buttons
to go backwards and forwards.

However, on the first page of the UC, if I click next, I
lose the control altogethor.

I am assuming that I probably need to hold the UC in the
viewstate somehow, but I don't know how to do that.

Also, if I switch tabs and load a different UC, will I
lose what has been entered in the UC that is no longer
being viewed?

Here is my code...
The ApplicationOverviewLinkButton is the one that will be
one of my tab buttons.


private void
ApplicationOverviewLinkButton_Click(object sender,
System.EventArgs e)
{
UserControl MyRegistration =
(UserControl)LoadControl
("../CMSUserControls/nqt/registration.ascx");

RegistrationDetailPanel.Controls.Add
(MyRegistration);


((MyCMSApp.CMSUserControls.nqt.registration)
MyRegistration).LoggedInUser = "LoggedInUserName";

((MyCMSApp.CMSUserControls.nqt.registration)
MyRegistration).FillData();
RegistrationDetailPanel.Visible =
true;
MyRegistration.Visible = true;
}


Thanks for any help.

Regards,
Dave Colliver.
[url]http://www.IlfracombeFOCUS.com[/url]
~~
[url]http://www,FOCUSPortals.com[/url] - Portal franchises available

[Brock Allen]

Any controls you dynamically add to the page need to be recreated upon postback.
Here's a sample that shows how to "remember' across postbacks what controls
were added:

[url]http://groups-beta.google.com/group/microsoft.public.dotnet.framework.aspnet/browse_thread/thread/5e4ba4cfe5902a4b/a5717a97bd32c450?q=brock+dynamic+controls+viewstat e&rnum=1[/url]

-Brock
DevelopMentor
[url]http://staff.develop.com/ballen[/url]

> Hi all,
>
> I am setting up a tab strip in an aspx page. I am using link buttons
> to switch between the tabs (at the moment, it is just link buttons, no
> tabs...)
>
> Under each link button, I intend to add a usercontrol. I have written
> one so far. I am adding the UC dynamically in the button click event
> of my tab strip.
>
> I am also setting properties and calling a method in the UC.
>
> My UC is set up like a wizard using back and next buttons to go
> backwards and forwards.
>
> However, on the first page of the UC, if I click next, I lose the
> control altogethor.
>
> I am assuming that I probably need to hold the UC in the viewstate
> somehow, but I don't know how to do that.
>
> Also, if I switch tabs and load a different UC, will I lose what has
> been entered in the UC that is no longer being viewed?
>
> Here is my code...
> The ApplicationOverviewLinkButton is the one that will be
> one of my tab buttons.
> private void
> ApplicationOverviewLinkButton_Click(object sender,
> System.EventArgs e)
> {
> UserControl MyRegistration =
> (UserControl)LoadControl
> ("../CMSUserControls/nqt/registration.ascx");
>
> RegistrationDetailPanel.Controls.Add
> (MyRegistration);
> ((MyCMSApp.CMSUserControls.nqt.registration)
> MyRegistration).LoggedInUser = "LoggedInUserName";
> ((MyCMSApp.CMSUserControls.nqt.registration)
> MyRegistration).FillData();
> RegistrationDetailPanel.Visible =
> true;
> MyRegistration.Visible = true;
> }
> Thanks for any help.
>
> Regards,
> Dave Colliver.
> [url]http://www.IlfracombeFOCUS.com[/url]
> ~~
> [url]http://www,FOCUSPortals.com[/url] - Portal franchises available

[David Colliver]

Hi Brock,

Magic. :-)

I am assuming though that as the control is not held
during postback (or is it?) that I need to save the
content (forms on each page) at every single postback.

I noted you answered my question on the security group. I
need to supply more info as I don't think your current
reply really fits.

Best regards,
Dave Colliver.
[url]http://www.CardiffFOCUS.com[/url]

>-----Original Message-----
>Any controls you dynamically add to the page need to be

recreated upon postback.

>Here's a sample that shows how to "remember' across

postbacks what controls

>were added:
>
>[url]http://groups-[/url]

beta.google.com/group/microsoft.public.dotnet.framework.as
pnet/browse_thread/thread/5e4ba4cfe5902a4b/a5717a97bd32c45
0?q=brock+dynamic+controls+viewstate&rnum=1

>
>-Brock
>DevelopMentor
>[url]http://staff.develop.com/ballen[/url]
>
>
>

>> Hi all,
>>
>> I am setting up a tab strip in an aspx page. I am

using link buttons

>> to switch between the tabs (at the moment, it is just

link buttons, no

>> tabs...)
>>
>> Under each link button, I intend to add a usercontrol.

I have written

>> one so far. I am adding the UC dynamically in the

button click event

>> of my tab strip.
>>
>> I am also setting properties and calling a method in

the UC.

>>
>> My UC is set up like a wizard using back and next

buttons to go

>> backwards and forwards.
>>
>> However, on the first page of the UC, if I click next,

I lose the

>> control altogethor.
>>
>> I am assuming that I probably need to hold the UC in

the viewstate

>> somehow, but I don't know how to do that.
>>
>> Also, if I switch tabs and load a different UC, will I

lose what has

>> been entered in the UC that is no longer being viewed?
>>
>> Here is my code...
>> The ApplicationOverviewLinkButton is the one that will

be

>> one of my tab buttons.
>> private void
>> ApplicationOverviewLinkButton_Click(object sender,
>> System.EventArgs e)
>> {
>> UserControl MyRegistration =
>> (UserControl)LoadControl
>> ("../CMSUserControls/nqt/registration.ascx");
>>
>> RegistrationDetailPanel.Controls.Add
>> (MyRegistration);
>> ((MyCMSApp.CMSUserControls.nqt.registration)
>> MyRegistration).LoggedInUser = "LoggedInUserName";
>> ((MyCMSApp.CMSUserControls.nqt.registration)
>> MyRegistration).FillData();
>> RegistrationDetailPanel.Visible =
>> true;
>> MyRegistration.Visible = true;
>> }
>> Thanks for any help.
>>
>> Regards,
>> Dave Colliver.
>> [url]http://www.IlfracombeFOCUS.com[/url]
>> ~~
>> [url]http://www,FOCUSPortals.com[/url] - Portal franchises

available

>
>
>
>.
>

[David Colliver]

Hi Brock,

I just discovered a slight flaw...

Say I have 3 tabs. The first tab has a usercontrol that
in itself has more than 1 page. The second and third tab
have a simple single page usercontrol.

Now, if I go to the first tab, I can next and previous
the pages in the first user control OK.

If I switch to the second (or 3rd) tab, these switch OK.

If I now go back to the first one, this swiches OK, but
if I next the page on the first tab, then I get the
content of the 2nd/3rd tab also displayed.

This is incremental. If I switch to the 2nd tab, then
back to first, then page in the first, the 2nd tabs
usercontrol is added to the list, so for each tab switch,
I get more and more content on the page.

I think I need to somehow drop the items in the
DynamicContent arraylist, but now sure where I should do
this.

Cheers.
Dave Colliver.
[url]http://www.GreatYarmouthFOCUS.com[/url]

>-----Original Message-----
>Hi Brock,
>
>Magic. :-)
>
>I am assuming though that as the control is not held
>during postback (or is it?) that I need to save the
>content (forms on each page) at every single postback.
>
>I noted you answered my question on the security group.

I

>need to supply more info as I don't think your current
>reply really fits.
>
>Best regards,
>Dave Colliver.
>[url]http://www.CardiffFOCUS.com[/url]
>
>

>>-----Original Message-----
>>Any controls you dynamically add to the page need to be

>recreated upon postback.

>>Here's a sample that shows how to "remember' across

>postbacks what controls

>>were added:
>>
>>[url]http://groups-[/url]

>beta.google.com/group/microsoft.public.dotnet.framework.a

s

>pnet/browse_thread/thread/5e4ba4cfe5902a4b/a5717a97bd32c4

5

>0?q=brock+dynamic+controls+viewstate&rnum=1

>>
>>-Brock
>>DevelopMentor
>>[url]http://staff.develop.com/ballen[/url]
>>
>>
>>

>>> Hi all,
>>>
>>> I am setting up a tab strip in an aspx page. I am

>using link buttons

>>> to switch between the tabs (at the moment, it is just

>link buttons, no

>>> tabs...)
>>>
>>> Under each link button, I intend to add a

usercontrol.

>I have written

>>> one so far. I am adding the UC dynamically in the

>button click event

>>> of my tab strip.
>>>
>>> I am also setting properties and calling a method in

>the UC.

>>>
>>> My UC is set up like a wizard using back and next

>buttons to go

>>> backwards and forwards.
>>>
>>> However, on the first page of the UC, if I click

next,

>I lose the

>>> control altogethor.
>>>
>>> I am assuming that I probably need to hold the UC in

>the viewstate

>>> somehow, but I don't know how to do that.
>>>
>>> Also, if I switch tabs and load a different UC, will

I

>lose what has

>>> been entered in the UC that is no longer being viewed?
>>>
>>> Here is my code...
>>> The ApplicationOverviewLinkButton is the one that

will

>be

>>> one of my tab buttons.
>>> private void
>>> ApplicationOverviewLinkButton_Click(object sender,
>>> System.EventArgs e)
>>> {
>>> UserControl MyRegistration =
>>> (UserControl)LoadControl
>>> ("../CMSUserControls/nqt/registration.ascx");
>>>
>>> RegistrationDetailPanel.Controls.Add
>>> (MyRegistration);
>>> ((MyCMSApp.CMSUserControls.nqt.registration)
>>> MyRegistration).LoggedInUser = "LoggedInUserName";
>>> ((MyCMSApp.CMSUserControls.nqt.registration)
>>> MyRegistration).FillData();
>>> RegistrationDetailPanel.Visible =
>>> true;
>>> MyRegistration.Visible = true;
>>> }
>>> Thanks for any help.
>>>
>>> Regards,
>>> Dave Colliver.
>>> [url]http://www.IlfracombeFOCUS.com[/url]
>>> ~~
>>> [url]http://www,FOCUSPortals.com[/url] - Portal franchises

>available

>>
>>
>>
>>.
>>

>.
>

[Brock Allen]

> I am assuming though that as the control is not held during postback

> (or is it?) that I need to save the content (forms on each page) at
> every single postback.

As long as you recreate the controls like I showed in the sample from the
link, they do hold their own state. You should not have to manually reset
their state. That would defeat the whole purpose of using server controls.

-Brock
DevelopMentor
[url]http://staff.develop.com/ballen[/url]

[Brock Allen]

> If I now go back to the first one, this swiches OK, but if I next the

> page on the first tab, then I get the content of the 2nd/3rd tab also
> displayed.

This sounds like a flaw in how the tab controls tracks which tab it should
be on.

-Brock
DevelopMentor
[url]http://staff.develop.com/ballen[/url]