Need exit routine in ASPX page

pbyrum · November 4th, 2005, 01:50 PM

I am looking for an routine in an ASPX web page that is called when the user leaves the page or the page closes or the page "unloads". This would be the opposite of Page_Load or Page_PreRender where these are called when the page first loads up. I am using C# .Net ASP.

Thank you,

Paul

Imar · November 4th, 2005, 05:59 PM

I think this is more related to client side scripting than to .NET or .NET 2.0.

A web page runs on the server, so when the user closes here browser no event runs ont he server.

Take a look at these these posts for some ideas and opinions on this:

You *could* try this with the onunload of a page with client side JavaScript, but it'll be messy.
http://p2p.wrox.com/topic.asp?TOPIC_...,browser,close
http://p2p.wrox.com/topic.asp?TOPIC_...,browser,close
http://p2p.wrox.com/topic.asp?TOPIC_...,browser,close

Cheers,

Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
While typing this post, I was listening to: Erics Trip by Sonic Youth (Track 5 from the album: Daydream Nation) What's This?

g2000 · November 4th, 2005, 06:01 PM

Page_Unload() ?

Some suggest using this for disconnecting database connection.

pbyrum · November 4th, 2005, 06:18 PM

The java script will not work for me. I need to call a routine in my C# code behind, which makes a call to a database to save data on the web page. I will check out Page_Unload().

Thank you,

Paul

Imar · November 4th, 2005, 06:21 PM

Page_Onload fires when the page is finished rendering; that is, it fires when the page is complete and sent to the browser, thus *before* the user has even started reading it. It fires for each request and won't be of much use to your requirements.

Please read the three links I posted to see how and why this is a problem.....

Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
While typing this post, I was listening to: Lily (My One and Only) by The Smashing Pumpkins (Track 12 from the album: Mellon Collie and the Infinite Sadness - Twilight to Starlight) What's This?

pbyrum · November 4th, 2005, 08:53 PM

Thanks for the links. Very interesting people on these formums.

Paul

pbyrum · November 4th, 2005, 09:05 PM

I am thinking of adding creating a onbeforeunload() that has this:

function ConfirmClose()
{
var x = confirm('Notes need to be saved. Do you want to continue?');
if(x == true) {
alert('Yes, continue.');
} else {
alert('No, keep current page up.');
}
}

If the user clicks NO and wants not to exit or go to the next page, how do I keep the current page up?

Imar · November 4th, 2005, 09:12 PM

You're welcome.

You can return false from the function:

else {
alert('No, keep current page up.');
return false;
}

You can shorten it down to:

Code:

function ConfirmClose()
{
  return confirm('Notes need to be saved. Do you want to continue?');
}

Cheers,

Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
While typing this post, I was listening to: Fire In The Head by The Tea Party (Track 1 from the album: The Edges Of Twilight) What's This?

Imar · November 4th, 2005, 09:17 PM

Ooops, answered to quick.

That would work for normal JavaScript methods, but not for this one.

Consider this:

<body onbeforeunload="return false;">

That would stop the browser from closing for ever if it was possible. Good for advertisement agencies that want you to view a lot of their banners.... ;)

Cheers,

Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
While typing this post, I was listening to: Deus by The Sugarcubes (Track 8 from the album: Life's Too Good) What's This?

pbyrum · November 8th, 2005, 02:37 PM

Imar,

Thanks for the code. The:

<body onbeforeunload="return false;">

prompts the user if he or she would like to continue on to the next page or stay at the current page, but I need to display a better message box that says something about specific to my page.

How come the following does not work?

function ConfirmClose()
{
return confirm('Notes need to be saved. Do you want to continue?');
}