| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| Hi,
|
| I have a user control that in turn creates a bunch of webcontrols
| dynamically and handles the events these webcontrols raise. It used to
work
| fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The problem is
| that the webcontrols get created on the OnLoad event of the usercontrol
and
| the event handlers are assigned at the same time. I have to click twice
on
| the controls for the events to be raised, the first time nothing happens,
| the second time the event handler fires up.
|
| Reading the msdn info it says that for pages, the dynamically created
| webcontrols should be created in the PreInit event of the page, but
| usercontrols do not have that event, what is the life-cycle for
| usercontrols.
|
| Also the usercontrol is dynamically loaded into the page at the Load
event.
|
| Thanks,
| Marcelo Cabrera.
|
|
|

| X-Tomcat-ID: 104339147
| References: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
| MIME-Version: 1.0
| Content-Type: text/plain
| Content-Transfer-Encoding: 7bit
| From: stch***@online.microsoft.com (Steven Cheng[MSFT])
| Organization: Microsoft
| Date: Fri, 23 Dec 2005 03:50:37 GMT
| Subject: RE: PreInit event in usercontrol
| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| Message-ID: <zmKTXQ3BGHA.1***@TK2MSFTNGXA02.phx.gbl>
| Newsgroups: microsoft.public.dotnet.framework.aspnet
| Lines: 88       
| Path: TK2MSFTNGXA02.phx.gbl
| Xref: TK2MSFTNGXA02.phx.gbl

| NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122
|
| Hi Marcelo,
|
| Welcome to ASPNET newsgroup.
| Regarding on the dynamic creating webcontrols in UserControl or in
asp.net
| 2.0 web page problem, here are some of my understanding and suggestion:
|
| 1. For dynamic webcontrols, it's ok to create them in Page's Load or Init
| event (Init is the prefered one), this is also the recommendation in
| asp.net 1.1:
|
| #HOW TO: Dynamically Create Controls in ASP.NET by Using Visual C# .NET
| http://support.microsoft.com/kb/317794/en-us
|
| 2. For asp.net 2.0, the reason why we recommend that put dynamic controls
| creation code in PreInit event is the ASP.NET 2.0's Theme/Skin service is
| applying skin to controls before Init event, so we need to add dynamic
| controls in page's controls structure in PreInit so as to automatically
| utilize the page's Theme setting....   But if we create them in Init or
| Load, we can also manually apply page theme for control through
| Control.ApplyStyleSheetSkin() method , e.g:
|
| ===================
| TextBox txt = new TextBox();
|         txt.ID = "txtUC";
|         txt.AutoPostBack = true;
|         txt.TextChanged += new EventHandler(txt_TextChanged);
|
|         phControls.Controls.Add(txt);
|         txt.ApplyStyleSheetSkin(Page);
| ====================
|
|
| For your scenario, I think the event handler problem may caused by how
your
| Usercontrol (the container) is created and added into page's collection.
Is
| the usercontrol always created and added into page  in page's Init or
Load
| event ?
|
| If possible, would you provide a simplfied page and the usercontrol so
that
| we can have a look into the detailed code logic?
|
| Thanks & Merry Christmas!
|
| Steven Cheng
| Microsoft Online Support
|
| Get Secure! www.microsoft.com/security
| (This posting is provided "AS IS", with no warranties, and confers no
| rights.)
|
|
|
|
|
|
|
|
| --------------------
| | From: "Marcelo Cabrera" <marcelocabrera@noemail.noemail>
| | Subject: PreInit event in usercontrol
| | Date: Thu, 22 Dec 2005 15:06:17 -0500
| | Lines: 21
| | X-Priority: 3
| | X-MSMail-Priority: Normal
| | X-Newsreader: Microsoft Outlook Express 6.00.2900.2670
| | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670
| | X-RFC2646: Format=Flowed; Original
| | Message-ID: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
| | Newsgroups: microsoft.public.dotnet.framework.aspnet
| | NNTP-Posting-Host: firewall1.tanainteractive.com 216.213.25.254
| | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!tk2msftngp13.phx.gbl
| | Xref: TK2MSFTNGXA02.phx.gbl
| microsoft.public.dotnet.framework.aspnet:366633
| | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| |
| | Hi,
| |
| | I have a user control that in turn creates a bunch of webcontrols
| | dynamically and handles the events these webcontrols raise. It used to
| work
| | fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The problem
is
| | that the webcontrols get created on the OnLoad event of the usercontrol
| and
| | the event handlers are assigned at the same time. I have to click twice
| on
| | the controls for the events to be raised, the first time nothing
happens,
| | the second time the event handler fires up.
| |
| | Reading the msdn info it says that for pages, the dynamically created
| | webcontrols should be created in the PreInit event of the page, but
| | usercontrols do not have that event, what is the life-cycle for
| | usercontrols.
| |
| | Also the usercontrol is dynamically loaded into the page at the Load
| event.
| |
| | Thanks,
| | Marcelo Cabrera.
| |
| |
| |
|
|

"Steven Cheng[MSFT]" wrote:

> Hi Marcelo,
>
> How are you doing on this issue or does my last reply helps you a little?
> If there're anything else we can help, please feel free to post here.
>
> Regards,
>
> Steven Cheng
> Microsoft Online Support
>
> Get Secure! www.microsoft.com/security
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)
>
>
> --------------------
> | X-Tomcat-ID: 104339147
> | References: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
> | MIME-Version: 1.0
> | Content-Type: text/plain
> | Content-Transfer-Encoding: 7bit
> | From: stch***@online.microsoft.com (Steven Cheng[MSFT])
> | Organization: Microsoft
> | Date: Fri, 23 Dec 2005 03:50:37 GMT
> | Subject: RE: PreInit event in usercontrol
> | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> | Message-ID: <zmKTXQ3BGHA.1***@TK2MSFTNGXA02.phx.gbl>
> | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | Lines: 88       
> | Path: TK2MSFTNGXA02.phx.gbl
> | Xref: TK2MSFTNGXA02.phx.gbl
> microsoft.public.dotnet.framework.aspnet:366711
> | NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122
> |
> | Hi Marcelo,
> |
> | Welcome to ASPNET newsgroup.
> | Regarding on the dynamic creating webcontrols in UserControl or in
> asp.net
> | 2.0 web page problem, here are some of my understanding and suggestion:
> |
> | 1. For dynamic webcontrols, it's ok to create them in Page's Load or Init
> | event (Init is the prefered one), this is also the recommendation in
> | asp.net 1.1:
> |
> | #HOW TO: Dynamically Create Controls in ASP.NET by Using Visual C# .NET
> | http://support.microsoft.com/kb/317794/en-us
> |
> | 2. For asp.net 2.0, the reason why we recommend that put dynamic controls
> | creation code in PreInit event is the ASP.NET 2.0's Theme/Skin service is
> | applying skin to controls before Init event, so we need to add dynamic
> | controls in page's controls structure in PreInit so as to automatically
> | utilize the page's Theme setting....   But if we create them in Init or
> | Load, we can also manually apply page theme for control through
> | Control.ApplyStyleSheetSkin() method , e.g:
> |
> | ===================
> | TextBox txt = new TextBox();
> |         txt.ID = "txtUC";
> |         txt.AutoPostBack = true;
> |         txt.TextChanged += new EventHandler(txt_TextChanged);
> |
> |         phControls.Controls.Add(txt);
> |         txt.ApplyStyleSheetSkin(Page);
> | ====================
> |
> |
> | For your scenario, I think the event handler problem may caused by how
> your
> | Usercontrol (the container) is created and added into page's collection.
> Is
> | the usercontrol always created and added into page  in page's Init or
> Load
> | event ?
> |
> | If possible, would you provide a simplfied page and the usercontrol so
> that
> | we can have a look into the detailed code logic?
> |
> | Thanks & Merry Christmas!
> |
> | Steven Cheng
> | Microsoft Online Support
> |
> | Get Secure! www.microsoft.com/security
> | (This posting is provided "AS IS", with no warranties, and confers no
> | rights.)
> |
> |
> |
> |
> |
> |
> |
> |
> | --------------------
> | | From: "Marcelo Cabrera" <marcelocabrera@noemail.noemail>
> | | Subject: PreInit event in usercontrol
> | | Date: Thu, 22 Dec 2005 15:06:17 -0500
> | | Lines: 21
> | | X-Priority: 3
> | | X-MSMail-Priority: Normal
> | | X-Newsreader: Microsoft Outlook Express 6.00.2900.2670
> | | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670
> | | X-RFC2646: Format=Flowed; Original
> | | Message-ID: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
> | | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | | NNTP-Posting-Host: firewall1.tanainteractive.com 216.213.25.254
> | | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!tk2msftngp13.phx.gbl
> | | Xref: TK2MSFTNGXA02.phx.gbl
> | microsoft.public.dotnet.framework.aspnet:366633
> | | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> | |
> | | Hi,
> | |
> | | I have a user control that in turn creates a bunch of webcontrols
> | | dynamically and handles the events these webcontrols raise. It used to
> | work
> | | fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The problem
> is
> | | that the webcontrols get created on the OnLoad event of the usercontrol
> | and
> | | the event handlers are assigned at the same time. I have to click twice
> | on
> | | the controls for the events to be raised, the first time nothing
> happens,
> | | the second time the event handler fires up.
> | |
> | | Reading the msdn info it says that for pages, the dynamically created
> | | webcontrols should be created in the PreInit event of the page, but
> | | usercontrols do not have that event, what is the life-cycle for
> | | usercontrols.
> | |
> | | Also the usercontrol is dynamically loaded into the page at the Load
> | event.
> | |
> | | Thanks,
> | | Marcelo Cabrera.
> | |
> | |
> | |
> |
> |
>
>

| Subject: RE: PreInit event in usercontrol
| Date: Sun, 1 Jan 2006 12:11:02 -0800
| Lines: 171
| Message-ID: <2AD8447C-EC54-41A0-BE42-FD0F6F71F***@microsoft.com>
| MIME-Version: 1.0
| Content-Type: text/plain;
|     charset="Utf-8"
| Content-Transfer-Encoding: 7bit
| X-Newsreader: Microsoft CDO for Windows 2000
| Content-Class: urn:content-classes:message
| Importance: normal
| Priority: normal
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
| Newsgroups: microsoft.public.dotnet.framework.aspnet
| NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
| Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGXA03.phx.gbl
| Xref: TK2MSFTNGXA02.phx.gbl

| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| Hi Steven,
|
| I was on vacation last week, thanks for the reply.
| I don't think the problem could be solved without a way to add the
handlers
| for the controls created dynamically. In other words, what's the
equivalent
| of preinit for a usercontrol?
|
| The thing is, I have an .ASCX page with a placeholder which in turn gets
| populated with a few usercontrols in the codebehind, then, those
usercontrols
| have their own events and eventhandlers which in turn may load some other
| usercontrols during the pageload event of the usercontrols. When that
happens
| the events in the second tier usercontrols don't fire until the second
time
| the user clicks. It all used to work well on 1.1 but with 2.0 something
| broke, I tried moving the controls creation and event wiring to the
pageinit
| as stated in the documentation (for ascx) but I can't find info about the
| page life cycle for usercontrols.
|
| The usercontrols are always created and added to the page(s) during the
load
| and/or preinit events.
|
| Thanks in advance,
| Marcelo Cabrera.
|
|
| "Steven Cheng[MSFT]" wrote:
|
| > Hi Marcelo,
| >
| > How are you doing on this issue or does my last reply helps you a
little?
| > If there're anything else we can help, please feel free to post here.
| >
| > Regards,
| >
| > Steven Cheng
| > Microsoft Online Support
| >
| > Get Secure! www.microsoft.com/security
| > (This posting is provided "AS IS", with no warranties, and confers no
| > rights.)
| >
| >
| > --------------------
| > | X-Tomcat-ID: 104339147
| > | References: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
| > | MIME-Version: 1.0
| > | Content-Type: text/plain
| > | Content-Transfer-Encoding: 7bit
| > | From: stch***@online.microsoft.com (Steven Cheng[MSFT])
| > | Organization: Microsoft
| > | Date: Fri, 23 Dec 2005 03:50:37 GMT
| > | Subject: RE: PreInit event in usercontrol
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > | Message-ID: <zmKTXQ3BGHA.1***@TK2MSFTNGXA02.phx.gbl>
| > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | Lines: 88       
| > | Path: TK2MSFTNGXA02.phx.gbl
| > | Xref: TK2MSFTNGXA02.phx.gbl
| > microsoft.public.dotnet.framework.aspnet:366711
| > | NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122
| > |
| > | Hi Marcelo,
| > |
| > | Welcome to ASPNET newsgroup.
| > | Regarding on the dynamic creating webcontrols in UserControl or in
| > asp.net
| > | 2.0 web page problem, here are some of my understanding and
suggestion:
| > |
| > | 1. For dynamic webcontrols, it's ok to create them in Page's Load or
Init
| > | event (Init is the prefered one), this is also the recommendation in
| > | asp.net 1.1:
| > |
| > | #HOW TO: Dynamically Create Controls in ASP.NET by Using Visual C#
.NET
| > | http://support.microsoft.com/kb/317794/en-us
| > |
| > | 2. For asp.net 2.0, the reason why we recommend that put dynamic
controls
| > | creation code in PreInit event is the ASP.NET 2.0's Theme/Skin
service is
| > | applying skin to controls before Init event, so we need to add
dynamic
| > | controls in page's controls structure in PreInit so as to
automatically
| > | utilize the page's Theme setting....   But if we create them in Init
or
| > | Load, we can also manually apply page theme for control through
| > | Control.ApplyStyleSheetSkin() method , e.g:
| > |
| > | ===================
| > | TextBox txt = new TextBox();
| > |         txt.ID = "txtUC";
| > |         txt.AutoPostBack = true;
| > |         txt.TextChanged += new EventHandler(txt_TextChanged);
| > |
| > |         phControls.Controls.Add(txt);
| > |         txt.ApplyStyleSheetSkin(Page);
| > | ====================
| > |
| > |
| > | For your scenario, I think the event handler problem may caused by
how
| > your
| > | Usercontrol (the container) is created and added into page's
collection.
| > Is
| > | the usercontrol always created and added into page  in page's Init or
| > Load
| > | event ?
| > |
| > | If possible, would you provide a simplfied page and the usercontrol
so
| > that
| > | we can have a look into the detailed code logic?
| > |
| > | Thanks & Merry Christmas!
| > |
| > | Steven Cheng
| > | Microsoft Online Support
| > |
| > | Get Secure! www.microsoft.com/security
| > | (This posting is provided "AS IS", with no warranties, and confers no
| > | rights.)
| > |
| > |
| > |
| > |
| > |
| > |
| > |
| > |
| > | --------------------
| > | | From: "Marcelo Cabrera" <marcelocabrera@noemail.noemail>
| > | | Subject: PreInit event in usercontrol
| > | | Date: Thu, 22 Dec 2005 15:06:17 -0500
| > | | Lines: 21
| > | | X-Priority: 3
| > | | X-MSMail-Priority: Normal
| > | | X-Newsreader: Microsoft Outlook Express 6.00.2900.2670
| > | | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670
| > | | X-RFC2646: Format=Flowed; Original
| > | | Message-ID: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
| > | | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | | NNTP-Posting-Host: firewall1.tanainteractive.com 216.213.25.254
| > | | Path:

| > | | Xref: TK2MSFTNGXA02.phx.gbl
| > | microsoft.public.dotnet.framework.aspnet:366633
| > | | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > | |
| > | | Hi,
| > | |
| > | | I have a user control that in turn creates a bunch of webcontrols
| > | | dynamically and handles the events these webcontrols raise. It used
to
| > | work
| > | | fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The
problem
| > is
| > | | that the webcontrols get created on the OnLoad event of the
usercontrol
| > | and
| > | | the event handlers are assigned at the same time. I have to click
twice
| > | on
| > | | the controls for the events to be raised, the first time nothing
| > happens,
| > | | the second time the event handler fires up.
| > | |
| > | | Reading the msdn info it says that for pages, the dynamically
created
| > | | webcontrols should be created in the PreInit event of the page, but
| > | | usercontrols do not have that event, what is the life-cycle for
| > | | usercontrols.
| > | |
| > | | Also the usercontrol is dynamically loaded into the page at the
Load
| > | event.
| > | |
| > | | Thanks,
| > | | Marcelo Cabrera.
| > | |
| > | |
| > | |
| > |
| > |
| >
| >
|

"Steven Cheng[MSFT]" wrote:

> Thanks for your response Marcelo,
>
> So I can currently get that you dynamically load some container
> userControls in the aspx page. Then, in those container usercontrol's
> certain postback events, you create and load some other sub usercontrols,
> and add event handlers for those sub usercontrols?  What's the event, your
> custom defined events or buildin events?
>
> Anyway, Usercontrols dosn't have PreInit event (different from Custom
> Server control...), we have only Init , Load event for usercontrol where we
> should put the dynamic child controls creation code....
>
> Thanks,
>
> Steven Cheng
> Microsoft Online Support
>
> Get Secure! www.microsoft.com/security
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)
>
>
> --------------------
> | Thread-Topic: PreInit event in usercontrol
> | thread-index: AcYPD30JIUMlpHo6Sn+47FEA1e5jkw==
> | X-WBNR-Posting-Host: 69.203.154.124
> | From: =?Utf-8?B?TWFyY2VsbyBDYWJyZXJh?= <marcelocabrera@noemail.noemail>
> | References:  <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
> <zmKTXQ3BGHA.1***@TK2MSFTNGXA02.phx.gbl>
> <8oHHjFGDGHA.***@TK2MSFTNGXA02.phx.gbl>
> | Subject: RE: PreInit event in usercontrol
> | Date: Sun, 1 Jan 2006 12:11:02 -0800
> | Lines: 171
> | Message-ID: <2AD8447C-EC54-41A0-BE42-FD0F6F71F***@microsoft.com>
> | MIME-Version: 1.0
> | Content-Type: text/plain;
> |     charset="Utf-8"
> | Content-Transfer-Encoding: 7bit
> | X-Newsreader: Microsoft CDO for Windows 2000
> | Content-Class: urn:content-classes:message
> | Importance: normal
> | Priority: normal
> | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
> | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
> | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGXA03.phx.gbl
> | Xref: TK2MSFTNGXA02.phx.gbl
> microsoft.public.dotnet.framework.aspnet:367960
> | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> |
> | Hi Steven,
> |
> | I was on vacation last week, thanks for the reply.
> | I don't think the problem could be solved without a way to add the
> handlers
> | for the controls created dynamically. In other words, what's the
> equivalent
> | of preinit for a usercontrol?
> |
> | The thing is, I have an .ASCX page with a placeholder which in turn gets
> | populated with a few usercontrols in the codebehind, then, those
> usercontrols
> | have their own events and eventhandlers which in turn may load some other
> | usercontrols during the pageload event of the usercontrols. When that
> happens
> | the events in the second tier usercontrols don't fire until the second
> time
> | the user clicks. It all used to work well on 1.1 but with 2.0 something
> | broke, I tried moving the controls creation and event wiring to the
> pageinit
> | as stated in the documentation (for ascx) but I can't find info about the
> | page life cycle for usercontrols.
> |
> | The usercontrols are always created and added to the page(s) during the
> load
> | and/or preinit events.
> |
> | Thanks in advance,
> | Marcelo Cabrera.
> |
> |
> | "Steven Cheng[MSFT]" wrote:
> |
> | > Hi Marcelo,
> | >
> | > How are you doing on this issue or does my last reply helps you a
> little?
> | > If there're anything else we can help, please feel free to post here.
> | >
> | > Regards,
> | >
> | > Steven Cheng
> | > Microsoft Online Support
> | >
> | > Get Secure! www.microsoft.com/security
> | > (This posting is provided "AS IS", with no warranties, and confers no
> | > rights.)
> | >
> | >
> | > --------------------
> | > | X-Tomcat-ID: 104339147
> | > | References: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
> | > | MIME-Version: 1.0
> | > | Content-Type: text/plain
> | > | Content-Transfer-Encoding: 7bit
> | > | From: stch***@online.microsoft.com (Steven Cheng[MSFT])
> | > | Organization: Microsoft
> | > | Date: Fri, 23 Dec 2005 03:50:37 GMT
> | > | Subject: RE: PreInit event in usercontrol
> | > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> | > | Message-ID: <zmKTXQ3BGHA.1***@TK2MSFTNGXA02.phx.gbl>
> | > | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | > | Lines: 88       
> | > | Path: TK2MSFTNGXA02.phx.gbl
> | > | Xref: TK2MSFTNGXA02.phx.gbl
> | > microsoft.public.dotnet.framework.aspnet:366711
> | > | NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122
> | > |
> | > | Hi Marcelo,
> | > |
> | > | Welcome to ASPNET newsgroup.
> | > | Regarding on the dynamic creating webcontrols in UserControl or in
> | > asp.net
> | > | 2.0 web page problem, here are some of my understanding and
> suggestion:
> | > |
> | > | 1. For dynamic webcontrols, it's ok to create them in Page's Load or
> Init
> | > | event (Init is the prefered one), this is also the recommendation in
> | > | asp.net 1.1:
> | > |
> | > | #HOW TO: Dynamically Create Controls in ASP.NET by Using Visual C#
> .NET
> | > | http://support.microsoft.com/kb/317794/en-us
> | > |
> | > | 2. For asp.net 2.0, the reason why we recommend that put dynamic
> controls
> | > | creation code in PreInit event is the ASP.NET 2.0's Theme/Skin
> service is
> | > | applying skin to controls before Init event, so we need to add
> dynamic
> | > | controls in page's controls structure in PreInit so as to
> automatically
> | > | utilize the page's Theme setting....   But if we create them in Init
> or
> | > | Load, we can also manually apply page theme for control through
> | > | Control.ApplyStyleSheetSkin() method , e.g:
> | > |
> | > | ===================
> | > | TextBox txt = new TextBox();
> | > |         txt.ID = "txtUC";
> | > |         txt.AutoPostBack = true;
> | > |         txt.TextChanged += new EventHandler(txt_TextChanged);
> | > |
> | > |         phControls.Controls.Add(txt);
> | > |         txt.ApplyStyleSheetSkin(Page);
> | > | ====================
> | > |
> | > |
> | > | For your scenario, I think the event handler problem may caused by
> how
> | > your
> | > | Usercontrol (the container) is created and added into page's
> collection.
> | > Is
> | > | the usercontrol always created and added into page  in page's Init or
> | > Load
> | > | event ?
> | > |
> | > | If possible, would you provide a simplfied page and the usercontrol
> so
> | > that
> | > | we can have a look into the detailed code logic?
> | > |
> | > | Thanks & Merry Christmas!
> | > |
> | > | Steven Cheng
> | > | Microsoft Online Support
> | > |
> | > | Get Secure! www.microsoft.com/security
> | > | (This posting is provided "AS IS", with no warranties, and confers no
> | > | rights.)
> | > |
> | > |
> | > |
> | > |
> | > |
> | > |
> | > |
> | > |
> | > | --------------------
> | > | | From: "Marcelo Cabrera" <marcelocabrera@noemail.noemail>
> | > | | Subject: PreInit event in usercontrol
> | > | | Date: Thu, 22 Dec 2005 15:06:17 -0500
> | > | | Lines: 21
> | > | | X-Priority: 3
> | > | | X-MSMail-Priority: Normal
> | > | | X-Newsreader: Microsoft Outlook Express 6.00.2900.2670
> | > | | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670
> | > | | X-RFC2646: Format=Flowed; Original
> | > | | Message-ID: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
> | > | | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | > | | NNTP-Posting-Host: firewall1.tanainteractive.com 216.213.25.254
> | > | | Path:
> TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!tk2msftngp13.phx.gbl
> | > | | Xref: TK2MSFTNGXA02.phx.gbl
> | > | microsoft.public.dotnet.framework.aspnet:366633
> | > | | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> | > | |
> | > | | Hi,
> | > | |
> | > | | I have a user control that in turn creates a bunch of webcontrols
> | > | | dynamically and handles the events these webcontrols raise. It used
> to
> | > | work
> | > | | fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The
> problem
> | > is
> | > | | that the webcontrols get created on the OnLoad event of the
> usercontrol
> | > | and
> | > | | the event handlers are assigned at the same time. I have to click
> twice
> | > | on
> | > | | the controls for the events to be raised, the first time nothing
> | > happens,
> | > | | the second time the event handler fires up.
> | > | |
> | > | | Reading the msdn info it says that for pages, the dynamically
> created
> | > | | webcontrols should be created in the PreInit event of the page, but
> | > | | usercontrols do not have that event, what is the life-cycle for
> | > | | usercontrols.
> | > | |
> | > | | Also the usercontrol is dynamically loaded into the page at the
> Load
> | > | event.
> | > | |
> | > | | Thanks,
> | > | | Marcelo Cabrera.
> | > | |
> | > | |
> | > | |
> | > |
> | > |
> | >
> | >
> |
>
>

| Subject: RE: PreInit event in usercontrol
| Date: Tue, 3 Jan 2006 07:43:03 -0800
| Lines: 262
| Message-ID: <0D2BB0F5-2BEB-44B2-9426-93ECD79ED***@microsoft.com>
| MIME-Version: 1.0
| Content-Type: text/plain;
|     charset="Utf-8"
| Content-Transfer-Encoding: 7bit
| X-Newsreader: Microsoft CDO for Windows 2000
| Content-Class: urn:content-classes:message
| Importance: normal
| Priority: normal
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
| Newsgroups: microsoft.public.dotnet.framework.aspnet
| NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
| Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGXA03.phx.gbl
| Xref: TK2MSFTNGXA02.phx.gbl

| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| Steven,
|
| Yes, you got it right. the events are builtin events, when I need to
| bubble-up events to the parent usercontrol (for example to remove the
child
| control) that works fine, simple built-in events like button onclick are
the
| events that need to be triggered twice before getting processed.
|
| Thanks,
| Marcelo Cabrera.
|
| "Steven Cheng[MSFT]" wrote:
|
| > Thanks for your response Marcelo,
| >
| > So I can currently get that you dynamically load some container
| > userControls in the aspx page. Then, in those container usercontrol's
| > certain postback events, you create and load some other sub
usercontrols,
| > and add event handlers for those sub usercontrols?  What's the event,
your
| > custom defined events or buildin events?
| >
| > Anyway, Usercontrols dosn't have PreInit event (different from Custom
| > Server control...), we have only Init , Load event for usercontrol
where we
| > should put the dynamic child controls creation code....
| >
| > Thanks,
| >
| > Steven Cheng
| > Microsoft Online Support
| >
| > Get Secure! www.microsoft.com/security
| > (This posting is provided "AS IS", with no warranties, and confers no
| > rights.)
| >
| >
| > --------------------
| > | Thread-Topic: PreInit event in usercontrol
| > | thread-index: AcYPD30JIUMlpHo6Sn+47FEA1e5jkw==
| > | X-WBNR-Posting-Host: 69.203.154.124
| > | From: =?Utf-8?B?TWFyY2VsbyBDYWJyZXJh?=

| > | References:  <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
| > <zmKTXQ3BGHA.1***@TK2MSFTNGXA02.phx.gbl>
| > <8oHHjFGDGHA.***@TK2MSFTNGXA02.phx.gbl>
| > | Subject: RE: PreInit event in usercontrol
| > | Date: Sun, 1 Jan 2006 12:11:02 -0800
| > | Lines: 171
| > | Message-ID: <2AD8447C-EC54-41A0-BE42-FD0F6F71F***@microsoft.com>
| > | MIME-Version: 1.0
| > | Content-Type: text/plain;
| > |     charset="Utf-8"
| > | Content-Transfer-Encoding: 7bit
| > | X-Newsreader: Microsoft CDO for Windows 2000
| > | Content-Class: urn:content-classes:message
| > | Importance: normal
| > | Priority: normal
| > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
| > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
| > | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGXA03.phx.gbl
| > | Xref: TK2MSFTNGXA02.phx.gbl
| > microsoft.public.dotnet.framework.aspnet:367960
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > |
| > | Hi Steven,
| > |
| > | I was on vacation last week, thanks for the reply.
| > | I don't think the problem could be solved without a way to add the
| > handlers
| > | for the controls created dynamically. In other words, what's the
| > equivalent
| > | of preinit for a usercontrol?
| > |
| > | The thing is, I have an .ASCX page with a placeholder which in turn
gets
| > | populated with a few usercontrols in the codebehind, then, those
| > usercontrols
| > | have their own events and eventhandlers which in turn may load some
other
| > | usercontrols during the pageload event of the usercontrols. When that
| > happens
| > | the events in the second tier usercontrols don't fire until the
second
| > time
| > | the user clicks. It all used to work well on 1.1 but with 2.0
something
| > | broke, I tried moving the controls creation and event wiring to the
| > pageinit
| > | as stated in the documentation (for ascx) but I can't find info about
the
| > | page life cycle for usercontrols.
| > |
| > | The usercontrols are always created and added to the page(s) during
the
| > load
| > | and/or preinit events.
| > |
| > | Thanks in advance,
| > | Marcelo Cabrera.
| > |
| > |
| > | "Steven Cheng[MSFT]" wrote:
| > |
| > | > Hi Marcelo,
| > | >
| > | > How are you doing on this issue or does my last reply helps you a
| > little?
| > | > If there're anything else we can help, please feel free to post
here.
| > | >
| > | > Regards,
| > | >
| > | > Steven Cheng
| > | > Microsoft Online Support
| > | >
| > | > Get Secure! www.microsoft.com/security
| > | > (This posting is provided "AS IS", with no warranties, and confers
no
| > | > rights.)
| > | >
| > | >
| > | > --------------------
| > | > | X-Tomcat-ID: 104339147
| > | > | References: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
| > | > | MIME-Version: 1.0
| > | > | Content-Type: text/plain
| > | > | Content-Transfer-Encoding: 7bit
| > | > | From: stch***@online.microsoft.com (Steven Cheng[MSFT])
| > | > | Organization: Microsoft
| > | > | Date: Fri, 23 Dec 2005 03:50:37 GMT
| > | > | Subject: RE: PreInit event in usercontrol
| > | > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > | > | Message-ID: <zmKTXQ3BGHA.1***@TK2MSFTNGXA02.phx.gbl>
| > | > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | > | Lines: 88       
| > | > | Path: TK2MSFTNGXA02.phx.gbl
| > | > | Xref: TK2MSFTNGXA02.phx.gbl
| > | > microsoft.public.dotnet.framework.aspnet:366711
| > | > | NNTP-Posting-Host: TOMCATIMPORT1 10.201.218.122
| > | > |
| > | > | Hi Marcelo,
| > | > |
| > | > | Welcome to ASPNET newsgroup.
| > | > | Regarding on the dynamic creating webcontrols in UserControl or
in
| > | > asp.net
| > | > | 2.0 web page problem, here are some of my understanding and
| > suggestion:
| > | > |
| > | > | 1. For dynamic webcontrols, it's ok to create them in Page's Load
or
| > Init
| > | > | event (Init is the prefered one), this is also the recommendation
in
| > | > | asp.net 1.1:
| > | > |
| > | > | #HOW TO: Dynamically Create Controls in ASP.NET by Using Visual
C#
| > .NET
| > | > | http://support.microsoft.com/kb/317794/en-us
| > | > |
| > | > | 2. For asp.net 2.0, the reason why we recommend that put dynamic
| > controls
| > | > | creation code in PreInit event is the ASP.NET 2.0's Theme/Skin
| > service is
| > | > | applying skin to controls before Init event, so we need to add
| > dynamic
| > | > | controls in page's controls structure in PreInit so as to
| > automatically
| > | > | utilize the page's Theme setting....   But if we create them in
Init
| > or
| > | > | Load, we can also manually apply page theme for control through
| > | > | Control.ApplyStyleSheetSkin() method , e.g:
| > | > |
| > | > | ===================
| > | > | TextBox txt = new TextBox();
| > | > |         txt.ID = "txtUC";
| > | > |         txt.AutoPostBack = true;
| > | > |         txt.TextChanged += new EventHandler(txt_TextChanged);
| > | > |
| > | > |         phControls.Controls.Add(txt);
| > | > |         txt.ApplyStyleSheetSkin(Page);
| > | > | ====================
| > | > |
| > | > |
| > | > | For your scenario, I think the event handler problem may caused
by
| > how
| > | > your
| > | > | Usercontrol (the container) is created and added into page's
| > collection.
| > | > Is
| > | > | the usercontrol always created and added into page  in page's
Init or
| > | > Load
| > | > | event ?
| > | > |
| > | > | If possible, would you provide a simplfied page and the
usercontrol
| > so
| > | > that
| > | > | we can have a look into the detailed code logic?
| > | > |
| > | > | Thanks & Merry Christmas!
| > | > |
| > | > | Steven Cheng
| > | > | Microsoft Online Support
| > | > |
| > | > | Get Secure! www.microsoft.com/security
| > | > | (This posting is provided "AS IS", with no warranties, and
confers no
| > | > | rights.)
| > | > |
| > | > |
| > | > |
| > | > |
| > | > |
| > | > |
| > | > |
| > | > |
| > | > | --------------------
| > | > | | From: "Marcelo Cabrera" <marcelocabrera@noemail.noemail>
| > | > | | Subject: PreInit event in usercontrol
| > | > | | Date: Thu, 22 Dec 2005 15:06:17 -0500
| > | > | | Lines: 21
| > | > | | X-Priority: 3
| > | > | | X-MSMail-Priority: Normal
| > | > | | X-Newsreader: Microsoft Outlook Express 6.00.2900.2670
| > | > | | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670
| > | > | | X-RFC2646: Format=Flowed; Original
| > | > | | Message-ID: <#GPhcLzBGHA.2***@tk2msftngp13.phx.gbl>
| > | > | | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | > | | NNTP-Posting-Host: firewall1.tanainteractive.com 216.213.25.254
| > | > | | Path:
| > TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!tk2msftngp13.phx.gbl
| > | > | | Xref: TK2MSFTNGXA02.phx.gbl
| > | > | microsoft.public.dotnet.framework.aspnet:366633
| > | > | | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > | > | |
| > | > | | Hi,
| > | > | |
| > | > | | I have a user control that in turn creates a bunch of
webcontrols
| > | > | | dynamically and handles the events these webcontrols raise. It
used
| > to
| > | > | work
| > | > | | fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The
| > problem
| > | > is
| > | > | | that the webcontrols get created on the OnLoad event of the
| > usercontrol
| > | > | and
| > | > | | the event handlers are assigned at the same time. I have to
click
| > twice
| > | > | on
| > | > | | the controls for the events to be raised, the first time
nothing
| > | > happens,
| > | > | | the second time the event handler fires up.
| > | > | |
| > | > | | Reading the msdn info it says that for pages, the dynamically
| > created
| > | > | | webcontrols should be created in the PreInit event of the page,
but
| > | > | | usercontrols do not have that event, what is the life-cycle for
| > | > | | usercontrols.
| > | > | |
| > | > | | Also the usercontrol is dynamically loaded into the page at the
| > Load
| > | > | event.
| > | > | |
| > | > | | Thanks,
| > | > | | Marcelo Cabrera.
| > | > | |
| > | > | |
| > | > | |
| > | > |
| > | > |
| > | >
| > | >
| > |
| >
| >
|

> Hi,
>
> I have a user control that in turn creates a bunch of webcontrols
> dynamically and handles the events these webcontrols raise. It used to work
> fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The problem is
> that the webcontrols get created on the OnLoad event of the usercontrol and
> the event handlers are assigned at the same time. I have to click twice on
> the controls for the events to be raised, the first time nothing happens,
> the second time the event handler fires up.
>
> Reading the msdn info it says that for pages, the dynamically created
> webcontrols should be created in the PreInit event of the page, but
> usercontrols do not have that event, what is the life-cycle for
> usercontrols.
>
> Also the usercontrol is dynamically loaded into the page at the Load event.
>
> Thanks,
> Marcelo Cabrera.

"bjossi" wrote:

> Hi!
>
> I have the same problem with UserControls. I have to click twice on the
> buttons on the control to make them react correctly. It seams to be the
> "doPostBack" that, by some reason, isn't correct. The scenario is
> as follows. The page load and 4 user controls are created all with
> buttons "edit" and "delete" the "doPostBack" for the first
> control has '_ctl1$...' the next has '_ctl2$...' etc (notice
> the numbers 1, 2.. etc). When I click the edit button on the first
> control the second control reacts. by displaying the "edit" box.
> But now, when I look at the "doPostBack" for the buttons the first
> control has '_ctl0$...' the second has '_ctl1$...' etc (the
> numbers start from 0) and now the buttons work for correct control.
> This implies that there is a problem with associating the correct
> control Id with the controls the first time they load. Why it is so
> I'm not able to find out.
>
> Dose anyone have an idea how to solve this (have you Marcelo solved
> your problem) ???
>
> Thanks...
> Björn Erlendsson
>
>
>
> Marcelo Cabrera skrev:
>
> > Hi,
> >
> > I have a user control that in turn creates a bunch of webcontrols
> > dynamically and handles the events these webcontrols raise. It used to work
> > fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The problem is
> > that the webcontrols get created on the OnLoad event of the usercontrol and
> > the event handlers are assigned at the same time. I have to click twice on
> > the controls for the events to be raised, the first time nothing happens,
> > the second time the event handler fires up.
> >
> > Reading the msdn info it says that for pages, the dynamically created
> > webcontrols should be created in the PreInit event of the page, but
> > usercontrols do not have that event, what is the life-cycle for
> > usercontrols.
> >
> > Also the usercontrol is dynamically loaded into the page at the Load event.
> >
> > Thanks,
> > Marcelo Cabrera.
>
>

> Hi,
>
> I have a user control that in turn creates a bunch of webcontrols
> dynamically and handles the events these webcontrols raise. It used to work
> fine on ASP .Net 1.1 but when compiled on 2.0 it does not. The problem is
> that the webcontrols get created on the OnLoad event of the usercontrol and
> the event handlers are assigned at the same time. I have to click twice on
> the controls for the events to be raised, the first time nothing happens,
> the second time the event handler fires up.
>
> Reading the msdn info it says that for pages, the dynamically created
> webcontrols should be created in the PreInit event of the page, but
> usercontrols do not have that event, what is the life-cycle for
> usercontrols.
>
> Also the usercontrol is dynamically loaded into the page at the Load event.
>
> Thanks,
> Marcelo Cabrera.