Q: combining Javascript and ASP-function?

[haakern@gmail.com]

Hi,

In an aspx page, I've got a TreeView and a detail form and a print
button. When the user clicks on the print button, I'd like to collapse
the TreeView and send the page to the printer.
Using Javascript, the print is easy:
<asp:ImageButto n ID="btnPrint" runat="server" AlternateText=" Print"
ImageUrl="~/images/print.gif"
OnClientClick=" javascript:wind ow.print();retu rn false;" ToolTip="Print
page" />

However, I'm not able to combine the window.print() function with the
necessary method to collapse the TreeView (MyTreeView.Col lapseAll()).

Anyone who's got any pointers on how to combine the Javascript print-
function with the ASP.NET TreeView.Collap se method on a single button?

Thanks!

Regards,
-Haakon-

[Eliyahu Goldin]

Re: combining Javascript and ASP-function?

The "return false;" part of the OnClientClick tells the event not to
progress to the server where the collapsing part is handled. Change it to
"return true"

--
Eliyahu Goldin,
Software Developer & Consultant
Microsoft MVP [ASP.NET]

http://msmvps.com/blogs/egoldin

http://usableasp.net

<haakern@gmail. comwrote in message
news:1176712294 .120585.13550@p 77g2000hsh.goog legroups.com...

Hi,
>
In an aspx page, I've got a TreeView and a detail form and a print
button. When the user clicks on the print button, I'd like to collapse
the TreeView and send the page to the printer.
Using Javascript, the print is easy:
<asp:ImageButto n ID="btnPrint" runat="server" AlternateText=" Print"
ImageUrl="~/images/print.gif"
OnClientClick=" javascript:wind ow.print();retu rn false;" ToolTip="Print
page" />
>
However, I'm not able to combine the window.print() function with the
necessary method to collapse the TreeView (MyTreeView.Col lapseAll()).
>
Anyone who's got any pointers on how to combine the Javascript print-
function with the ASP.NET TreeView.Collap se method on a single button?
>
Thanks!
>
Regards,
-Haakon-
>

[haakern@gmail.com]

Re: combining Javascript and ASP-function?

Thanks for the reply. I think I was a bit unclear on what I wanted to
achieve.
I need to collapse my TreeView before I print the page. So going to
the server and collapsing the tree after firing off the browser print
function will not solve my problem.

I tried:

<script runat="server">
void CollapseTree(Ob ject sender, EventArgs e)
{
TreeView1.Colla pseAll();
}
</script>

and then:

<asp:ImageButto n ID="ImageButton 1" runat="server"
AlternateText=" Print" ImageUrl="~/images/print.gif"
OnClientClick=" CollapseTree;ja vascript:window .print();return true;"
ToolTip="Print page" />

but that results in the error: 'CollapseTree' is undefined - which is
strange, given that I have other ASP-functions that DO work on e.g.
OnSelectedIndex Changed

Regards,
-Haakon-

On Apr 16, 10:46 am, "Eliyahu Goldin"
<REMOVEALLCAPIT ALSeEgGoldD...@ mMvVpPsS.orgwro te:

The "return false;" part of the OnClientClick tells the event not to
progress to the server where the collapsing part is handled. Change it to
"return true"
>
--
Eliyahu Goldin,
Software Developer & Consultant
Microsoft MVP [ASP.NET]http://msmvps.com/blogs/egoldinhttp://usableasp.net
>

[Eliyahu Goldin]

Re: combining Javascript and ASP-function?

What you put in OnClientClick runs on client side whereas CollapseTree is a
server side method.

You don't need to use OnClientClick. Instead let CollapseTree do its job and
communicate a request to print to the client side.

This article may help you for the last part:
How to Pass Messages and Actions between Server and Client

http://usableasp.net/DeveloperPage.aspx?page=Articles/HowTo/HowToPassMessagesBetweenServerAndClient.htm

--
Eliyahu Goldin,
Software Developer & Consultant
Microsoft MVP [ASP.NET]

http://msmvps.com/blogs/egoldin

http://usableasp.net

<haakern@gmail. comwrote in message
news:1176714097 .205417.104170@ l77g2000hsb.goo glegroups.com.. .

Thanks for the reply. I think I was a bit unclear on what I wanted to
achieve.
I need to collapse my TreeView before I print the page. So going to
the server and collapsing the tree after firing off the browser print
function will not solve my problem.
>
I tried:
>
<script runat="server">
void CollapseTree(Ob ject sender, EventArgs e)
{
TreeView1.Colla pseAll();
}
</script>
>
and then:
>
<asp:ImageButto n ID="ImageButton 1" runat="server"
AlternateText=" Print" ImageUrl="~/images/print.gif"
OnClientClick=" CollapseTree;ja vascript:window .print();return true;"
ToolTip="Print page" />
>
but that results in the error: 'CollapseTree' is undefined - which is
strange, given that I have other ASP-functions that DO work on e.g.
OnSelectedIndex Changed
>
Regards,
-Haakon-
>
On Apr 16, 10:46 am, "Eliyahu Goldin"
<REMOVEALLCAPIT ALSeEgGoldD...@ mMvVpPsS.orgwro te:

>The "return false;" part of the OnClientClick tells the event not to
>progress to the server where the collapsing part is handled. Change it to
>"return true"
>>
>--
>Eliyahu Goldin,
>Software Developer & Consultant
>Microsoft MVP
>[ASP.NET]http://msmvps.com/blogs/egoldinhttp://usableasp.net
>>

>