Access To A Component.SelectedItem in Page_Init

[awalker1]

Hi all,

I have a datagrid and a drop down list on my page.

The DataGrid is created dynamically at runtime to contain columns based on
the item that the user has selected from the drop down list. Some of the
columns need to be a ButtonColumn so that the user can click on them to be
taken to another page. This "click" is handled by the ItemCommand" event of
the datagrid.

In order to correctly associate the ItemCommand event to the dynamically
created button columns, I have to setup the grid in the Page_Init event. If
I don't do it here then the event never gets fired (and this is well
documented on the net).

My problem is that in order to set the grid up correctly, I need to access
the SelectedItem of the combo box in the Page_Init event, BUT, the combo box
hasn't been initialised at this point. I can access the combo box in the
Page_Load event but this is too late to setup the grid. I'm in a catch 22.

So, how can I access the SelectedItem of my combo box in the Page_Init
event? If I can't access it directly, can I access it through another
route?

Help please?

Andy

[C.F.]

Can you direct me to where
(and this is well

documented on the net).
This paper has official information on control's execute cycle.
http://msdn.microsoft.com/library/de...nLifecycle.asp

"awalker1" <en*******@iola.co.uk> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl... Hi all,

I have a datagrid and a drop down list on my page.

The DataGrid is created dynamically at runtime to contain columns based on
the item that the user has selected from the drop down list. Some of the
columns need to be a ButtonColumn so that the user can click on them to be
taken to another page. This "click" is handled by the ItemCommand" event
of
the datagrid.

In order to correctly associate the ItemCommand event to the dynamically
created button columns, I have to setup the grid in the Page_Init event.
If
I don't do it here then the event never gets fired (and this is well
documented on the net).

My problem is that in order to set the grid up correctly, I need to access
the SelectedItem of the combo box in the Page_Init event, BUT, the combo
box
hasn't been initialised at this point. I can access the combo box in the
Page_Load event but this is too late to setup the grid. I'm in a catch
22.

So, how can I access the SelectedItem of my combo box in the Page_Init
event? If I can't access it directly, can I access it through another
route?

Help please?

Andy

[Andy Walker]

Apparently not no. I googled for this error and I thought that I had read
lots of posts where the problem was solved by creating the columns in the
Page_Init, and this seemed to work if I hard coded the values. However, my
requirement was to use a value from a user control.

I have just re-googled and I can't find a single post stating that. Are you
suggesting that this isn't the case, or are you just asking the question?

BUT, despite that, using hard-coded values if I set my columns up in the
Page_Init then the event never fires, if I set them up in the Page_Load then
the event fires.

Thanks for the link anyway.

Andy

"C.F." <ch*******@sbcglobal.net> wrote in message
news:0I***************@newssvr33.news.prodigy.com. ..

Can you direct me to where
(and this is well

documented on the net).

This paper has official information on control's execute cycle.
http://msdn.microsoft.com/library/de...nLifecycle.asp

"awalker1" <en*******@iola.co.uk> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...

Hi all,

I have a datagrid and a drop down list on my page.

The DataGrid is created dynamically at runtime to contain columns based
on
the item that the user has selected from the drop down list. Some of the
columns need to be a ButtonColumn so that the user can click on them to
be
taken to another page. This "click" is handled by the ItemCommand" event
of
the datagrid.

In order to correctly associate the ItemCommand event to the dynamically
created button columns, I have to setup the grid in the Page_Init event.
If
I don't do it here then the event never gets fired (and this is well
documented on the net).

My problem is that in order to set the grid up correctly, I need to
access
the SelectedItem of the combo box in the Page_Init event, BUT, the combo
box
hasn't been initialised at this point. I can access the combo box in the
Page_Load event but this is too late to setup the grid. I'm in a catch
22.

So, how can I access the SelectedItem of my combo box in the Page_Init
event? If I can't access it directly, can I access it through another
route?

Help please?

Andy

[Andy Walker]

Found a couple now,

http://groups.google.co.uk/groups?hl...nd%2Bpage_init

http://groups.google.co.uk/groups?hl...itemcommand%2B

Andy

"C.F." <ch*******@sbcglobal.net> wrote in message
news:0I***************@newssvr33.news.prodigy.com. ..

Can you direct me to where
(and this is well

documented on the net).

This paper has official information on control's execute cycle.
http://msdn.microsoft.com/library/de...nLifecycle.asp

"awalker1" <en*******@iola.co.uk> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...

Hi all,

I have a datagrid and a drop down list on my page.

The DataGrid is created dynamically at runtime to contain columns based
on
the item that the user has selected from the drop down list. Some of the
columns need to be a ButtonColumn so that the user can click on them to
be
taken to another page. This "click" is handled by the ItemCommand" event
of
the datagrid.

In order to correctly associate the ItemCommand event to the dynamically
created button columns, I have to setup the grid in the Page_Init event.
If
I don't do it here then the event never gets fired (and this is well
documented on the net).

My problem is that in order to set the grid up correctly, I need to
access
the SelectedItem of the combo box in the Page_Init event, BUT, the combo
box
hasn't been initialised at this point. I can access the combo box in the
Page_Load event but this is too late to setup the grid. I'm in a catch
22.

So, how can I access the SelectedItem of my combo box in the Page_Init
event? If I can't access it directly, can I access it through another
route?

Help please?

Andy

[awalker1]

Have my related posts for this item been deleted for some reason?

I definately had some responses and I replied to them but the now seem to
have disappeared.

"awalker1" <en*******@iola.co.uk> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...

Hi all,

I have a datagrid and a drop down list on my page.

The DataGrid is created dynamically at runtime to contain columns based on
the item that the user has selected from the drop down list. Some of the
columns need to be a ButtonColumn so that the user can click on them to be
taken to another page. This "click" is handled by the ItemCommand" event of the datagrid.

In order to correctly associate the ItemCommand event to the dynamically
created button columns, I have to setup the grid in the Page_Init event. If I don't do it here then the event never gets fired (and this is well
documented on the net).

My problem is that in order to set the grid up correctly, I need to access
the SelectedItem of the combo box in the Page_Init event, BUT, the combo box hasn't been initialised at this point. I can access the combo box in the
Page_Load event but this is too late to setup the grid. I'm in a catch 22.
So, how can I access the SelectedItem of my combo box in the Page_Init
event? If I can't access it directly, can I access it through another
route?

Help please?

Andy