Swapping Image Url

In an aspx page I have declared an Image control:
<asp:Image id="myImage" runat="server"></asp:Image>
In the code-behind I populate it's ImageURL property, like this:
myImage.ImageUrl = "some.gif";
Then, in client-side JavaScript, the user can cause the image to be
replaced, like this:
document.all("myImage").src = "other.gif";
Here's the problem: on postback, the image control's .ImageUrl property
still contains "some.gif" and not "other.gif" as I am needing.
What do I need to do to receive - during postback - the value set in the
client by the JavaScript?
Thanks!After postback, the value of ImageUrl is coming from the control's ViewState
.
One solution would be to set the value of a hidden field when you set the
image's src attribute. The value of the hidden field will get posted back
correctly.
"Guadala Harry" wrote:

> In an aspx page I have declared an Image control:
> <asp:Image id="myImage" runat="server"></asp:Image>
> In the code-behind I populate it's ImageURL property, like this:
> myImage.ImageUrl = "some.gif";
> Then, in client-side JavaScript, the user can cause the image to be
> replaced, like this:
> document.all("myImage").src = "other.gif";
> Here's the problem: on postback, the image control's .ImageUrl property
> still contains "some.gif" and not "other.gif" as I am needing.
> What do I need to do to receive - during postback - the value set in the
> client by the JavaScript?
> Thanks!
>
>
Thanks - I thought about going the hidden field route - but was hoping for
some solution that wouldn't require adding another field or control that
needs synchronizing with the original Image control.
Any other ideas?
Thanks again...
-G
"Brad Quinn" <BradQuinn@.discussions.microsoft.com> wrote in message
news:E07F8EE9-B35D-488C-A2A9-CB60DCA6AACD@.microsoft.com...
> After postback, the value of ImageUrl is coming from the control's
ViewState.
> One solution would be to set the value of a hidden field when you set the
> image's src attribute. The value of the hidden field will get posted back
> correctly.
> "Guadala Harry" wrote:
>
Can you make the code in your codebehind only execute the first time it
executes? i.e.
if (!Page.IsPostback)
myImage.ImageUrl = "some.gif";
Toby Mathews
"Guadala Harry" <GMan@.NoSpam.com> wrote in message
news:%23wqVQXQgEHA.2908@.TK2MSFTNGP10.phx.gbl...
> Thanks - I thought about going the hidden field route - but was hoping for
> some solution that wouldn't require adding another field or control that
> needs synchronizing with the original Image control.
> Any other ideas?
> Thanks again...
> -G
>
> "Brad Quinn" <BradQuinn@.discussions.microsoft.com> wrote in message
> news:E07F8EE9-B35D-488C-A2A9-CB60DCA6AACD@.microsoft.com...
> ViewState.
the
back
property
the
>
That's not really relevant to the problem - it would be IF there was an
issue with postback processing walking on the value set in the client - but
issue is that the value set in the client code is never making it to the
server (unless I explicitly stuff the value into a hidden field - which I
don't want to do unless I really must).
Thanks anyway.
"Toby Mathews" <tobymathewsNOSPAM@.yahoo.spamfree.co.uk> wrote in message
news:cfhs1q$87n$1@.thorium.cix.co.uk...
> Can you make the code in your codebehind only execute the first time it
> executes? i.e.
> if (!Page.IsPostback)
> myImage.ImageUrl = "some.gif";
> Toby Mathews
> "Guadala Harry" <GMan@.NoSpam.com> wrote in message
> news:%23wqVQXQgEHA.2908@.TK2MSFTNGP10.phx.gbl...
for
> the
> back
> property
> the
>
Harry,
Sorry, I didn't read your message properly first time round. I'm not sure
how else you could achieve what you want to do other than how you decribe.
Good luck,
Toby
"Guadala Harry" <GMan@.NoSpam.com> wrote in message
news:%23Tkt9DRgEHA.1048@.tk2msftngp13.phx.gbl...
> That's not really relevant to the problem - it would be IF there was an
> issue with postback processing walking on the value set in the client -
but
> issue is that the value set in the client code is never making it to the
> server (unless I explicitly stuff the value into a hidden field - which I
> don't want to do unless I really must).
> Thanks anyway.
>
> "Toby Mathews" <tobymathewsNOSPAM@.yahoo.spamfree.co.uk> wrote in message
> news:cfhs1q$87n$1@.thorium.cix.co.uk...
> for
that
set
posted
be
in
>