maintain viewstate in listboxes

[DC Gringo]

I have an asp.net vb page with two web user controls on it. The first user
control, uc1.ascx has a series of list boxes that are populated in series by
each other with ONSELECTEDINDEX CHANGED.

In the second control, uc2.ascx, lower down on the page, there is an
imagebutton. When the imagebutton is clicked, it goes to the same page with
a change in url parameter pageID. The control mentioned above sticks
around, while the second one is swapped out for another web user control,
uc3.ascx.

The values populated and selections in the listbox in the uc1.ascx are
getting lost despite viewstate being enabled as true.

What is going on?

The imagebutton looks like this:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k
Response.Redire ct("~/advanced/default.aspx?pa geID=shas")
End Sub
--
_____
DC G

[Jos]

DC Gringo wrote:

I have an asp.net vb page with two web user controls on it. The
first user control, uc1.ascx has a series of list boxes that are
populated in series by each other with ONSELECTEDINDEX CHANGED.

In the second control, uc2.ascx, lower down on the page, there is an
imagebutton. When the imagebutton is clicked, it goes to the same
page with a change in url parameter pageID. The control mentioned
above sticks around, while the second one is swapped out for another
web user control, uc3.ascx.

The values populated and selections in the listbox in the uc1.ascx are
getting lost despite viewstate being enabled as true.

What is going on?

The imagebutton looks like this:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k
Response.Redire ct("~/advanced/default.aspx?pa geID=shas")
End Sub

Using Response.Redire ct causes all viewstate to be lost.
With Redirect, you call the page as if it is the first time.

I suggest you omit the Response.Redire ct, and do the swapping in
imgShasTab_Clic k .

--

Jos

[DC Gringo]

Well that certainly makes sense.

Ok, so I tried:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k

shas1.Visible = True
Me.Visible = False

End Sub

This Sub imgShasTab_Clic k is in the same control as the imagebutton control.
The result is that the Me.Visible = False part works, but the shas1.visible
part does not.

What am I doing wrong?

_____
DC G

"Jos" <jn************ *@fastmail.fm> wrote in message
news:u$******** ******@TK2MSFTN GP15.phx.gbl...

DC Gringo wrote:

I have an asp.net vb page with two web user controls on it. The
first user control, uc1.ascx has a series of list boxes that are
populated in series by each other with ONSELECTEDINDEX CHANGED.

In the second control, uc2.ascx, lower down on the page, there is an
imagebutton. When the imagebutton is clicked, it goes to the same
page with a change in url parameter pageID. The control mentioned
above sticks around, while the second one is swapped out for another
web user control, uc3.ascx.

The values populated and selections in the listbox in the uc1.ascx are
getting lost despite viewstate being enabled as true.

What is going on?

The imagebutton looks like this:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k
Response.Redire ct("~/advanced/default.aspx?pa geID=shas")
End Sub

Using Response.Redire ct causes all viewstate to be lost.
With Redirect, you call the page as if it is the first time.

I suggest you omit the Response.Redire ct, and do the swapping in
imgShasTab_Clic k .

--

Jos

[DC Gringo]

Anyone? A little help on this?

_____
DC G

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:u8******** ******@TK2MSFTN GP15.phx.gbl...

Well that certainly makes sense.

Ok, so I tried:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k

shas1.Visible = True
Me.Visible = False

End Sub

This Sub imgShasTab_Clic k is in the same control as the imagebutton control. The result is that the Me.Visible = False part works, but the shas1.visible part does not.

What am I doing wrong?

_____
DC G

"Jos" <jn************ *@fastmail.fm> wrote in message
news:u$******** ******@TK2MSFTN GP15.phx.gbl...

DC Gringo wrote:

I have an asp.net vb page with two web user controls on it. The
first user control, uc1.ascx has a series of list boxes that are
populated in series by each other with ONSELECTEDINDEX CHANGED.

In the second control, uc2.ascx, lower down on the page, there is an
imagebutton. When the imagebutton is clicked, it goes to the same
page with a change in url parameter pageID. The control mentioned
above sticks around, while the second one is swapped out for another
web user control, uc3.ascx.

The values populated and selections in the listbox in the uc1.ascx are
getting lost despite viewstate being enabled as true.

What is going on?

The imagebutton looks like this:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k
Response.Redire ct("~/advanced/default.aspx?pa geID=shas")
End Sub

Using Response.Redire ct causes all viewstate to be lost.
With Redirect, you call the page as if it is the first time.

I suggest you omit the Response.Redire ct, and do the swapping in
imgShasTab_Clic k .

--

Jos

[Alvin Bruney [MVP]]

Can you put some javascript in the onload event to investigate what the
visibility property is at the time the page loads?

--
Regards,
Alvin Bruney
[ASP.NET MVP http://mvp.support.microsoft.com/default.aspx]
Got tidbits? Get it here... http://tinyurl.com/27cok
"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:ea******** ******@TK2MSFTN GP10.phx.gbl...

Anyone? A little help on this?

_____
DC G

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:u8******** ******@TK2MSFTN GP15.phx.gbl...

Well that certainly makes sense.

Ok, so I tried:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k

shas1.Visible = True
Me.Visible = False

End Sub

This Sub imgShasTab_Clic k is in the same control as the imagebutton

control.

The result is that the Me.Visible = False part works, but the

shas1.visible

part does not.

What am I doing wrong?

_____
DC G

"Jos" <jn************ *@fastmail.fm> wrote in message
news:u$******** ******@TK2MSFTN GP15.phx.gbl...

> DC Gringo wrote:
> > I have an asp.net vb page with two web user controls on it. The
> > first user control, uc1.ascx has a series of list boxes that are
> > populated in series by each other with ONSELECTEDINDEX CHANGED.
> >
> > In the second control, uc2.ascx, lower down on the page, there is an
> > imagebutton. When the imagebutton is clicked, it goes to the same
> > page with a change in url parameter pageID. The control mentioned
> > above sticks around, while the second one is swapped out for another
> > web user control, uc3.ascx.
> >
> > The values populated and selections in the listbox in the uc1.ascx
> > are
> > getting lost despite viewstate being enabled as true.
> >
> > What is going on?
> >
> > The imagebutton looks like this:
> >
> > Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e
> > As
> > System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k
> > Response.Redire ct("~/advanced/default.aspx?pa geID=shas")
> > End Sub
>
> Using Response.Redire ct causes all viewstate to be lost.
> With Redirect, you call the page as if it is the first time.
>
> I suggest you omit the Response.Redire ct, and do the swapping in
> imgShasTab_Clic k .
>
> --
>
> Jos
>
>

[DC Gringo]

I'd be happy to, could I get a code sample?

_____
DC G

"Alvin Bruney [MVP]" <vapor at steaming post office> wrote in message
news:ux******** ******@TK2MSFTN GP10.phx.gbl...

Can you put some javascript in the onload event to investigate what the
visibility property is at the time the page loads?

--
Regards,
Alvin Bruney
[ASP.NET MVP http://mvp.support.microsoft.com/default.aspx]
Got tidbits? Get it here... http://tinyurl.com/27cok
"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:ea******** ******@TK2MSFTN GP10.phx.gbl...

Anyone? A little help on this?

_____
DC G

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:u8******** ******@TK2MSFTN GP15.phx.gbl...

Well that certainly makes sense.

Ok, so I tried:

Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e As
System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k

shas1.Visible = True
Me.Visible = False

End Sub

This Sub imgShasTab_Clic k is in the same control as the imagebutton

control.

The result is that the Me.Visible = False part works, but the

shas1.visible

part does not.

What am I doing wrong?

_____
DC G

"Jos" <jn************ *@fastmail.fm> wrote in message
news:u$******** ******@TK2MSFTN GP15.phx.gbl...
> DC Gringo wrote:
> > I have an asp.net vb page with two web user controls on it. The
> > first user control, uc1.ascx has a series of list boxes that are
> > populated in series by each other with ONSELECTEDINDEX CHANGED.
> >
> > In the second control, uc2.ascx, lower down on the page, there is an > > imagebutton. When the imagebutton is clicked, it goes to the same
> > page with a change in url parameter pageID. The control mentioned
> > above sticks around, while the second one is swapped out for another > > web user control, uc3.ascx.
> >
> > The values populated and selections in the listbox in the uc1.ascx
> > are
> > getting lost despite viewstate being enabled as true.
> >
> > What is going on?
> >
> > The imagebutton looks like this:
> >
> > Private Sub imgShasTab_Clic k(ByVal sender As System.Object, ByVal e
> > As
> > System.Web.UI.I mageClickEventA rgs) Handles imgShasTab.Clic k
> > Response.Redire ct("~/advanced/default.aspx?pa geID=shas")
> > End Sub
>
> Using Response.Redire ct causes all viewstate to be lost.
> With Redirect, you call the page as if it is the first time.
>
> I suggest you omit the Response.Redire ct, and do the swapping in
> imgShasTab_Clic k .
>
> --
>
> Jos
>
>