display an alert only once

  • Thread starter Thread starter AAaron123
  • Start date Start date
A

AAaron123

In Page_Load I have the following wanting the popup to appear the first time
(only) that the page is displayed. I get it each time. Can this be fixed?

thanks
Static beenHere As Boolean = False

If Not beenHere Then

beenHere = True

Dim csname1 As String = "PopupScript"

Dim cstype As Type = Me.GetType()

Dim csm As ClientScriptManager = Page.ClientScript

If (Not csm.IsStartupScriptRegistered(cstype, csname1)) Then

Dim cstext1 As New StringBuilder()

cstext1.Append("alert('This is ")

cstext1.Append("some text.');")

csm.RegisterStartupScript(cstype, csname1, cstext1.ToString, True)

End If

End If
 
Hi

try this

on Page_Load

if(Page.IsPostBack==false)
{
//put script here to show only once
}

hope that helps

regards

Munna
 
Tried it but it doesn't work.
I'd guess because if I move to another page and return, or if I refresh, it
is not a PostBack.

I think I heed a variable that has a lifetime that lasts until the user
leaves the site.

Thanks for trying to help.
 
That did not fix it and I think it should have so I'm now wondering if I'm
missing something else. Like once it's registered it persisted for the
session.

Maybe I need to unregester it the second time or if there is no unregister
maybe I need to register a dummy?

Any ideas?

Thanks

I included the code below



In Page_Load I have the following wanting the popup to appear the first time
(only) that the page is displayed. I get it each time. Can this be fixed?



Session("blnFirstTime") = True

If CBool(Session("blnFirstTime")) Then

Session("blnFirstTime") = False

Dim csname1 As String = "PopupScript"

Dim cstype As Type = Me.GetType()

Dim csm As ClientScriptManager = Page.ClientScript

If (Not csm.IsStartupScriptRegistered(cstype, csname1)) Then

Dim cstext1 As New StringBuilder()

cstext1.Append("alert('This is ")

cstext1.Append("some text.');")

csm.RegisterStartupScript(cstype, csname1, cstext1.ToString, True)

End If

End If








Mark Rae said:
I think I heed a variable that has a lifetime that lasts until the user
leaves the site.
Click to expand...

Then use Session...

Session["blnFirstTime"] = true;

if ((bool)Session["blnFirstTime"] == true)
{
// run once
Session["blnFirstTime"] = false;
}
Click to expand...
 
Not knowing anything about Global.asax I stumbled aroung a little but it's
ok now. So you solved my problem an I learned a little more.

Thanks
Mark Rae said:
[top-posting corrected]
In Page_Load I have the following
Session("blnFirstTime") = True
Click to expand...

There's your problem - you're resetting the Session variable to True every
time the page loads.

This needs to be done in Session_Start.
Click to expand...
 
I wonder what static/shared does in Asp.Net.
Something different then in windows?



Mark Rae said:
[top-posting corrected]
In Page_Load I have the following
Session("blnFirstTime") = True
Click to expand...

There's your problem - you're resetting the Session variable to True every
time the page loads.

This needs to be done in Session_Start.
Click to expand...
 
AAaron123 formulated the question :
I wonder what static/shared does in Asp.Net.
Something different then in windows?
Click to expand...

The same as in Windows, but here the (single) webapplication is shared
between all users!
So if you want to keep 1 value for the entire site - fine.
If you want to keep 1 value per user - use Session.

Hans Kesting
 
What about if I want to maintain a counter of how many tine I was vested.
Would you do that with a file?

Thanks for the info below
 
AAaron123 explained :
What about if I want to maintain a counter of how many tine I was vested.
Would you do that with a file?
Click to expand...

I would keep counters in a database. Usually a site runs as a user that
can't write files, unless you specifically enable it.
For a file you would have to read it, decode the counter value,
increase it and write it back. And you would have to do this within a
"lock" so that some other request wouldn't interfere.
For a database you would just issue a command "update counters set
mycounter = mycounter+1" and the database should do all the locking
needed.

Hans Kesting
 
lots of info there. thanks
Hans Kesting said:
AAaron123 explained :

I would keep counters in a database. Usually a site runs as a user that
can't write files, unless you specifically enable it.
For a file you would have to read it, decode the counter value, increase
it and write it back. And you would have to do this within a "lock" so
that some other request wouldn't interfere.
For a database you would just issue a command "update counters set
mycounter = mycounter+1" and the database should do all the locking
needed.

Hans Kesting
Click to expand...
 
Back
Top