|
|
You're in the
asp.net building controls
group:Retrieving contained Controls during postback using LoadPostData
asp.net building controls:
System.Web.UI.WebControls.CompositeControl. Like many Controls, my Control renders more than just one inner Control. When a postback occurs, I need to get the data posted by these inner Controls (by using the postCollection argument). However, the postDataKey argument gives the key for the id of the outer Control. When I need to access the value posted by one of the inner Controls, I have found that I need to enter the id as a literal String for the key, but this seems a little too simple for me, with all the Controls that could get created. Is there some property or method that I should be using to determine the key? Thanks. -- Nathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/
That's what I thought, and what I have used in a previous Control of mine,
but when I try to do that here I am recieving an error that the Control does not exist. When I did a debug session I found that the value of the Control was Nothing. Therefore, I cannot get to the UniqueID. Any idea what could be causing this? Thanks. -- Nathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/ [quoted text, click to view] "Teemu Keiski" <joteke@aspalliance.com> wrote in message news:uedY%235RAIHA.4752@TK2MSFTNGP04.phx.gbl... > Hi, > > Control's UniqueID property is usually used as key in form post > collection. > > -- > Teemu Keiski > AspInsider, ASP.NET MVP > http://blogs.aspadvice.com/joteke > http://teemukeiski.net > > > "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message > news:OrXChILAIHA.1168@TK2MSFTNGP02.phx.gbl... >>I am writing a Control that inherits from >>System.Web.UI.WebControls.CompositeControl. Like many Controls, my Control >>renders more than just one inner Control. When a postback occurs, I need >>to get the data posted by these inner Controls (by using the >>postCollection argument). However, the postDataKey argument gives the key >>for the id of the outer Control. When I need to access the value posted by >>one of the inner Controls, I have found that I need to enter the id as a >>literal String for the key, but this seems a little too simple for me, >>with all the Controls that could get created. Is there some property or >>method that I should be using to determine the key? Thanks. >> -- >> Nathan Sokalski >> njsokalski@hotmail.com >> http://www.nathansokalski.com/ >> > >
Thank you for your help, I should probably be slapping myself in the head
for my mistake: I created the Controls in CreateChildControls, but forgot the Me.Controls.Add() method! Thanks again for your help. -- Nathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/ [quoted text, click to view] "Teemu Keiski" <joteke@aspalliance.com> wrote in message news:%23lyFlMSAIHA.5960@TK2MSFTNGP05.phx.gbl... > Does your control create child controls in CreateChildControls?. That way > you ensure controls are there when you access the Controls collection. > > > -- > Teemu Keiski > AspInsider, ASP.NET MVP > http://blogs.aspadvice.com/joteke > http://teemukeiski.net > > > "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message > news:u5qKnKSAIHA.748@TK2MSFTNGP04.phx.gbl... >> That's what I thought, and what I have used in a previous Control of >> mine, but when I try to do that here I am recieving an error that the >> Control does not exist. When I did a debug session I found that the value >> of the Control was Nothing. Therefore, I cannot get to the UniqueID. Any >> idea what could be causing this? Thanks. >> -- >> Nathan Sokalski >> njsokalski@hotmail.com >> http://www.nathansokalski.com/ >> "Teemu Keiski" <joteke@aspalliance.com> wrote in message >> news:uedY%235RAIHA.4752@TK2MSFTNGP04.phx.gbl... >>> Hi, >>> >>> Control's UniqueID property is usually used as key in form post >>> collection. >>> >>> -- >>> Teemu Keiski >>> AspInsider, ASP.NET MVP >>> http://blogs.aspadvice.com/joteke >>> http://teemukeiski.net >>> >>> >>> "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message >>> news:OrXChILAIHA.1168@TK2MSFTNGP02.phx.gbl... >>>>I am writing a Control that inherits from >>>>System.Web.UI.WebControls.CompositeControl. Like many Controls, my >>>>Control renders more than just one inner Control. When a postback >>>>occurs, I need to get the data posted by these inner Controls (by using >>>>the postCollection argument). However, the postDataKey argument gives >>>>the key for the id of the outer Control. When I need to access the value >>>>posted by one of the inner Controls, I have found that I need to enter >>>>the id as a literal String for the key, but this seems a little too >>>>simple for me, with all the Controls that could get created. Is there >>>>some property or method that I should be using to determine the key? >>>>Thanks. >>>> -- >>>> Nathan Sokalski >>>> njsokalski@hotmail.com >>>> http://www.nathansokalski.com/ >>>> >>> >>> >> >> > >
Hi,
Control's UniqueID property is usually used as key in form post collection. -- Teemu Keiski AspInsider, ASP.NET MVP http://blogs.aspadvice.com/joteke http://teemukeiski.net [quoted text, click to view] "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message news:OrXChILAIHA.1168@TK2MSFTNGP02.phx.gbl... >I am writing a Control that inherits from >System.Web.UI.WebControls.CompositeControl. Like many Controls, my Control >renders more than just one inner Control. When a postback occurs, I need to >get the data posted by these inner Controls (by using the postCollection >argument). However, the postDataKey argument gives the key for the id of >the outer Control. When I need to access the value posted by one of the >inner Controls, I have found that I need to enter the id as a literal >String for the key, but this seems a little too simple for me, with all the >Controls that could get created. Is there some property or method that I >should be using to determine the key? Thanks. > -- > Nathan Sokalski > njsokalski@hotmail.com > http://www.nathansokalski.com/ >
Does your control create child controls in CreateChildControls?. That way
you ensure controls are there when you access the Controls collection. -- Teemu Keiski AspInsider, ASP.NET MVP http://blogs.aspadvice.com/joteke http://teemukeiski.net [quoted text, click to view] "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message news:u5qKnKSAIHA.748@TK2MSFTNGP04.phx.gbl... > That's what I thought, and what I have used in a previous Control of mine, > but when I try to do that here I am recieving an error that the Control > does not exist. When I did a debug session I found that the value of the > Control was Nothing. Therefore, I cannot get to the UniqueID. Any idea > what could be causing this? Thanks. > -- > Nathan Sokalski > njsokalski@hotmail.com > http://www.nathansokalski.com/ > "Teemu Keiski" <joteke@aspalliance.com> wrote in message > news:uedY%235RAIHA.4752@TK2MSFTNGP04.phx.gbl... >> Hi, >> >> Control's UniqueID property is usually used as key in form post >> collection. >> >> -- >> Teemu Keiski >> AspInsider, ASP.NET MVP >> http://blogs.aspadvice.com/joteke >> http://teemukeiski.net >> >> >> "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message >> news:OrXChILAIHA.1168@TK2MSFTNGP02.phx.gbl... >>>I am writing a Control that inherits from >>>System.Web.UI.WebControls.CompositeControl. Like many Controls, my >>>Control renders more than just one inner Control. When a postback occurs, >>>I need to get the data posted by these inner Controls (by using the >>>postCollection argument). However, the postDataKey argument gives the key >>>for the id of the outer Control. When I need to access the value posted >>>by one of the inner Controls, I have found that I need to enter the id as >>>a literal String for the key, but this seems a little too simple for me, >>>with all the Controls that could get created. Is there some property or >>>method that I should be using to determine the key? Thanks. >>> -- >>> Nathan Sokalski >>> njsokalski@hotmail.com >>> http://www.nathansokalski.com/ >>> >> >> > >
Note: if you access Control instance directly, call EnsureChildControls
before that [quoted text, click to view] "Teemu Keiski" <joteke@aspalliance.com> wrote in message news:%23lyFlMSAIHA.5960@TK2MSFTNGP05.phx.gbl... > Does your control create child controls in CreateChildControls?. That way > you ensure controls are there when you access the Controls collection. > > > -- > Teemu Keiski > AspInsider, ASP.NET MVP > http://blogs.aspadvice.com/joteke > http://teemukeiski.net > > > "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message > news:u5qKnKSAIHA.748@TK2MSFTNGP04.phx.gbl... >> That's what I thought, and what I have used in a previous Control of >> mine, but when I try to do that here I am recieving an error that the >> Control does not exist. When I did a debug session I found that the value >> of the Control was Nothing. Therefore, I cannot get to the UniqueID. Any >> idea what could be causing this? Thanks. >> -- >> Nathan Sokalski >> njsokalski@hotmail.com >> http://www.nathansokalski.com/ >> "Teemu Keiski" <joteke@aspalliance.com> wrote in message >> news:uedY%235RAIHA.4752@TK2MSFTNGP04.phx.gbl... >>> Hi, >>> >>> Control's UniqueID property is usually used as key in form post >>> collection. >>> >>> -- >>> Teemu Keiski >>> AspInsider, ASP.NET MVP >>> http://blogs.aspadvice.com/joteke >>> http://teemukeiski.net >>> >>> >>> "Nathan Sokalski" <njsokalski@hotmail.com> wrote in message >>> news:OrXChILAIHA.1168@TK2MSFTNGP02.phx.gbl... >>>>I am writing a Control that inherits from >>>>System.Web.UI.WebControls.CompositeControl. Like many Controls, my >>>>Control renders more than just one inner Control. When a postback >>>>occurs, I need to get the data posted by these inner Controls (by using >>>>the postCollection argument). However, the postDataKey argument gives >>>>the key for the id of the outer Control. When I need to access the value >>>>posted by one of the inner Controls, I have found that I need to enter >>>>the id as a literal String for the key, but this seems a little too >>>>simple for me, with all the Controls that could get created. Is there >>>>some property or method that I should be using to determine the key? >>>>Thanks. >>>> -- >>>> Nathan Sokalski >>>> njsokalski@hotmail.com >>>> http://www.nathansokalski.com/ >>>> >>> >>> >> >> > >
Don't see what you're looking for? Try a search.
|
June 2003
July 2003
August 2003
September 2003
October 2003
November 2003
December 2003
January 2004
February 2004
March 2004
April 2004
May 2004
June 2004
July 2004
August 2004
September 2004
October 2004
November 2004
December 2004
January 2005
February 2005
March 2005
April 2005
May 2005
June 2005
July 2005
August 2005
September 2005
October 2005
November 2005
December 2005
January 2006
February 2006
March 2006
April 2006
May 2006
June 2006
July 2006
August 2006
September 2006
October 2006
November 2006
December 2006
January 2007
February 2007
March 2007
April 2007
May 2007
June 2007
July 2007
August 2007
September 2007
October 2007
November 2007
December 2007
January 2008
February 2008
March 2008
April 2008
May 2008
June 2008
| home · blog · groups | Questions? Comments? Contact the dn |