not sure why close window function not working

[Paul]

Hi I have 2 functions in java script, one opens a second window-this works,
the other is supposed to close this second window, does not seem to be
working. Just wondering if anyone had any ideas.
Here is the code,
the functions are
<script language="javas cript">
function openwin(){
win_usr=window. open ("control_numin fo.aspx")
}
function closewin(){
win_usr.close() ;
}
</script>
below is how I am trying to call the functions,
<script language="javas cript" event="onclick( )" for="btn_user">
openwin();
</script>
<script language="javas cript" event="onclick( )" for="btn_clear" >
closewin();
</script>
</form>
thanks,
--
Paul G
Software engineer.

[Kevin Spencer]

Hi Paul,

Only the JavaScript window.open() method returns a handle to a window.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:6F******** *************** ***********@mic rosoft.com...

Just had an additional question, below is what I have that opens a child
window(created by .NET for a hyperlink data column grid),
is there a way to assign a handle to this so I can build a close function
and call it when the parent window unloads?
<asp:HyperLinkC olumn Text="View" Target="_blank"
DataNavigateUrl Field="Data_Ite m_ID"
DataNavigateUrl FormatString="c hild.aspx?i_Dat a_Item_ID={0}"

thanks Paul.
"Kevin Spencer" wrote:

A PostBack is certainly going to lose the handle. You realize that each Page instance is occurring in a vacuum, don't you? When the page reloads into the browser, everything is new.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:21******** *************** ***********@mic rosoft.com...

ok thanks for the information, could be that a postback is happening so loosing the handle. Guess one could save the handle in a session
variable,not quite sure how this would work.

"bruce barker" wrote:

> the code is ok, but if the open button click fires a postback, or a

postback

> is done before you call close it will not work, as you will have lost

the

> window handle.
>
> -- bruce (sqlwork.com)
>
> "Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
> news:0A******** *************** ***********@mic rosoft.com...
> | Hi I have 2 functions in java script, one opens a second

window-this > works,
> | the other is supposed to close this second window, does not seem to be > | working. Just wondering if anyone had any ideas.
> | Here is the code,
> | the functions are
> | <script language="javas cript">
> | function openwin(){
> | win_usr=window. open ("control_numin fo.aspx")
> | }
> | function closewin(){
> | win_usr.close() ;
> | }
> | </script>
> | below is how I am trying to call the functions,
> | <script language="javas cript" event="onclick( )" for="btn_user">
> | openwin();
> | </script>
> | <script language="javas cript" event="onclick( )" for="btn_clear" >
> | closewin();
> | </script>
> | </form>
> | thanks,
> | --
> | Paul G
> | Software engineer.
>
>
>

[Paul]

ok thanks for the information.

"Kevin Spencer" wrote:

Afraid not, Paul. The problem isn't the name, it's what it points to, which
is gone after the PostBack. It's an actual in-memory handle to a browser
window. There is simply no way to persist it.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:15******** *************** ***********@mic rosoft.com...

Hi thanks for the response. Yes everything is new as you mentioned. I was
able to get it working by using the <input statement for the button that
opens the child window, does not cause a post back. I have another

window

that has a column of buttons in a data grid and when these buttons are
selected, it opens a child window. Guess in this case it is posting back

to

the server so will have to some how save off the handle name and then
retreive it and use it in the onunload event of the parent window in the

body

tag, so when the parent window navigates away the child window if left

open

will be closed.

"Kevin Spencer" wrote:

A PostBack is certainly going to lose the handle. You realize that each Page instance is occurring in a vacuum, don't you? When the page reloads into the browser, everything is new.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:21******** *************** ***********@mic rosoft.com...
> ok thanks for the information, could be that a postback is happening so > loosing the handle. Guess one could save the handle in a session
> variable,not quite sure how this would work.
>
> "bruce barker" wrote:
>
> > the code is ok, but if the open button click fires a postback, or a
postback
> > is done before you call close it will not work, as you will have lost the
> > window handle.
> >
> > -- bruce (sqlwork.com)
> >
> > "Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
> > news:0A******** *************** ***********@mic rosoft.com...
> > | Hi I have 2 functions in java script, one opens a second window-this > > works,
> > | the other is supposed to close this second window, does not seem to be > > | working. Just wondering if anyone had any ideas.
> > | Here is the code,
> > | the functions are
> > | <script language="javas cript">
> > | function openwin(){
> > | win_usr=window. open ("control_numin fo.aspx")
> > | }
> > | function closewin(){
> > | win_usr.close() ;
> > | }
> > | </script>
> > | below is how I am trying to call the functions,
> > | <script language="javas cript" event="onclick( )" for="btn_user">
> > | openwin();
> > | </script>
> > | <script language="javas cript" event="onclick( )" for="btn_clear" >
> > | closewin();
> > | </script>
> > | </form>
> > | thanks,
> > | --
> > | Paul G
> > | Software engineer.
> >
> >
> >

[Lau Lei Cheong]

It is because ASP.NET buttons are "always" run at server.
If they're not placed inside <form runat="server"> , you'll see a parser
error tell you to do so.
Also, using <asp:> controls will introduce one more postback to "create" the
control it'll cause slower performance, that's why people here trend to
advise others use plain HTML controls instead.

In this case you should use <input type="button/submit/image"> instead.

"Paul" <Pa**@discussio ns.microsoft.co m> ¦b¶l¥ó
news:B5******** *************** ***********@mic rosoft.com ¤¤¼¶¼g...

Hi I tried the code and it worked but when I use .NET to add the buttons and take out the run at server attribute the button does not even show up on the form.
See below

<asp:Button id="btn_user" style="Z-INDEX: 101; LEFT: 152px; POSITION:
absolute; TOP: 80px" Text="Open" CausesValidatio n="False"></asp:Button>
Just wondering if there is another attribute I should add in place of the
runat server.
"Lau Lei Cheong" wrote:

I've written sample code and tested it in IE6, and it works.
<html>
<head>
<script language="javas cript">
function openwin(){
win_usr=window. open ("control_numin fo.aspx")
}
function closewin(){
win_usr.close() ;
}
</script>
<script language="javas cript" event="onclick( )" for="btn_user">
openwin();
</script>
<script language="javas cript" event="onclick( )" for="btn_clear" >
closewin();
</script>
</head>
<body>
<form runat=server>
<input id="btn_user" type="button">
<input id="btn_clear" type="button">
</form>
</body>
</html>

However it's not going to be work in Mozilla based browsers such as Mozilla, Netscape and Firefox.
For reference on how to do it, see here:
http://wdvl.com/Authoring/JavaScript...turing_ns.html

Also, make sure your button do NOT have "runat = 'server'" attribute.

"Paul" <Pa**@discussio ns.microsoft.co m> |b?l¢Do
news:0A******** *************** ***********@mic rosoft.com ?????g...

Hi I have 2 functions in java script, one opens a second window-this

works,

the other is supposed to close this second window, does not seem to be
working. Just wondering if anyone had any ideas.
Here is the code,
the functions are
<script language="javas cript">
function openwin(){
win_usr=window. open ("control_numin fo.aspx")
}
function closewin(){
win_usr.close() ;
}
</script>
below is how I am trying to call the functions,
<script language="javas cript" event="onclick( )" for="btn_user">
openwin();
</script>
<script language="javas cript" event="onclick( )" for="btn_clear" >
closewin();
</script>
</form>
thanks,
--
Paul G
Software engineer.

[Lau Lei Cheong]

Yes. So the workaround would be to supply
"javascript:fha ndle=windo.open ('url');". :)

"Kevin Spencer" <ks******@takem pis.com> ¦b¶l¥ó
news:%2******** ********@TK2MSF TNGP15.phx.gbl ¤¤¼¶¼g...

Hi Paul,

Only the JavaScript window.open() method returns a handle to a window.

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:6F******** *************** ***********@mic rosoft.com...

Just had an additional question, below is what I have that opens a child
window(created by .NET for a hyperlink data column grid),
is there a way to assign a handle to this so I can build a close function

and call it when the parent window unloads?
<asp:HyperLinkC olumn Text="View" Target="_blank"
DataNavigateUrl Field="Data_Ite m_ID"
DataNavigateUrl FormatString="c hild.aspx?i_Dat a_Item_ID={0}"

thanks Paul.
"Kevin Spencer" wrote:

A PostBack is certainly going to lose the handle. You realize that each

Page instance is occurring in a vacuum, don't you? When the page reloads

into

the browser, everything is new.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:21******** *************** ***********@mic rosoft.com...
> ok thanks for the information, could be that a postback is happening so > loosing the handle. Guess one could save the handle in a session
> variable,not quite sure how this would work.
>
> "bruce barker" wrote:
>
> > the code is ok, but if the open button click fires a postback, or

a postback
> > is done before you call close it will not work, as you will have

lost the
> > window handle.
> >
> > -- bruce (sqlwork.com)
> >
> > "Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
> > news:0A******** *************** ***********@mic rosoft.com...
> > | Hi I have 2 functions in java script, one opens a second window-this > > works,
> > | the other is supposed to close this second window, does not seem to be > > | working. Just wondering if anyone had any ideas.
> > | Here is the code,
> > | the functions are
> > | <script language="javas cript">
> > | function openwin(){
> > | win_usr=window. open ("control_numin fo.aspx")
> > | }
> > | function closewin(){
> > | win_usr.close() ;
> > | }
> > | </script>
> > | below is how I am trying to call the functions,
> > | <script language="javas cript" event="onclick( )" for="btn_user">
> > | openwin();
> > | </script>
> > | <script language="javas cript" event="onclick( )" for="btn_clear" >
> > | closewin();
> > | </script>
> > | </form>
> > | thanks,
> > | --
> > | Paul G
> > | Software engineer.
> >
> >
> >

[Paul]

thanks for the information,wil l give it a try.
"Lau Lei Cheong" wrote:

Yes. So the workaround would be to supply
"javascript:fha ndle=windo.open ('url');". :)

"Kevin Spencer" <ks******@takem pis.com> ¦b¶l¥ó
news:%2******** ********@TK2MSF TNGP15.phx.gbl ¤¤¼¶¼g...

Hi Paul,

Only the JavaScript window.open() method returns a handle to a window.

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Neither a follower
nor a lender be.

"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:6F******** *************** ***********@mic rosoft.com...

Just had an additional question, below is what I have that opens a child
window(created by .NET for a hyperlink data column grid),
is there a way to assign a handle to this so I can build a close function and call it when the parent window unloads?
<asp:HyperLinkC olumn Text="View" Target="_blank"
DataNavigateUrl Field="Data_Ite m_ID"
DataNavigateUrl FormatString="c hild.aspx?i_Dat a_Item_ID={0}"

thanks Paul.
"Kevin Spencer" wrote:

> A PostBack is certainly going to lose the handle. You realize that each

Page

> instance is occurring in a vacuum, don't you? When the page reloads

into

the

> browser, everything is new.
>
> --
> HTH,
> Kevin Spencer
> ..Net Developer
> Microsoft MVP
> Neither a follower
> nor a lender be.
>
> "Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
> news:21******** *************** ***********@mic rosoft.com...
> > ok thanks for the information, could be that a postback is happening

so

> > loosing the handle. Guess one could save the handle in a session
> > variable,not quite sure how this would work.
> >
> > "bruce barker" wrote:
> >
> > > the code is ok, but if the open button click fires a postback, or

a > postback
> > > is done before you call close it will not work, as you will have

lost

> the
> > > window handle.
> > >
> > > -- bruce (sqlwork.com)
> > >
> > > "Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
> > > news:0A******** *************** ***********@mic rosoft.com...
> > > | Hi I have 2 functions in java script, one opens a second

window-this

> > > works,
> > > | the other is supposed to close this second window, does not seem

to be

> > > | working. Just wondering if anyone had any ideas.
> > > | Here is the code,
> > > | the functions are
> > > | <script language="javas cript">
> > > | function openwin(){
> > > | win_usr=window. open ("control_numin fo.aspx")
> > > | }
> > > | function closewin(){
> > > | win_usr.close() ;
> > > | }
> > > | </script>
> > > | below is how I am trying to call the functions,
> > > | <script language="javas cript" event="onclick( )" for="btn_user">
> > > | openwin();
> > > | </script>
> > > | <script language="javas cript" event="onclick( )" for="btn_clear" >
> > > | closewin();
> > > | </script>
> > > | </form>
> > > | thanks,
> > > | --
> > > | Paul G
> > > | Software engineer.
> > >
> > >
> > >
>
>
>