Help on session behaviour ???

[serge calderara]

Dear all

I have a strange behaviour using session.

ON my form load when the page is first display I create a session variable
to stor connection objects as follow :

If not IsPostBack then Then
Session.Add("DataLayer", Me.m_pCon)
else
Me.m_pCon.m_dbConnection = CType(Session("DataLayer"),
DbConParam).m_dbConnection

end if

Time to time it appears that the session object is not existing anymore,
then I retry 2 or 3 times and its again working

Any ideas why it occurs like this ?

regards
serge

[mortb]

The session has a timeout that is set in the web.config. I think the default
timeout is 20 minutes.
Therefore you can never rely on that the object you put into session still
exists when you recieve a post back of a page.

Hope this helps,
mortb
"serge calderara" <se************@discussions.microsoft.com> wrote in
message news:0D**********************************@microsof t.com...

Dear all

I have a strange behaviour using session.

ON my form load when the page is first display I create a session variable
to stor connection objects as follow :

If not IsPostBack then Then
Session.Add("DataLayer", Me.m_pCon)
else
Me.m_pCon.m_dbConnection = CType(Session("DataLayer"),
DbConParam).m_dbConnection

end if

Time to time it appears that the session object is not existing anymore,
then I retry 2 or 3 times and its again working

Any ideas why it occurs like this ?

regards
serge

[serge calderara]

So that means that I should always test if object is nothing when a post back
is received and then if object is nithing reinitialise it ?
"mortb" wrote:

The session has a timeout that is set in the web.config. I think the default
timeout is 20 minutes.
Therefore you can never rely on that the object you put into session still
exists when you recieve a post back of a page.

Hope this helps,
mortb
"serge calderara" <se************@discussions.microsoft.com> wrote in
message news:0D**********************************@microsof t.com...

Dear all

I have a strange behaviour using session.

ON my form load when the page is first display I create a session variable
to stor connection objects as follow :

If not IsPostBack then Then
Session.Add("DataLayer", Me.m_pCon)
else
Me.m_pCon.m_dbConnection = CType(Session("DataLayer"),
DbConParam).m_dbConnection

end if

Time to time it appears that the session object is not existing anymore,
then I retry 2 or 3 times and its again working

Any ideas why it occurs like this ?

regards
serge

[Elton W]

Hi Serge,

See my comments following

If not IsPostBack then Then
Session.Add("DataLayer", Me.m_pCon)

Do you init Me.m_pCon? If not it's Nothing. When postback, you retrieve
nothing from Session.

HTH

Elton Wang