A dataset is saved in session state. Then the dataset is filled out with the
new records using a dataadapter. It appears then that the dataset saved in
session state contains the new records even without saving the updated
dataset.
Why does this happen? How can I preserve the dataset saved in session state
from automatical updating?
Thank you.
6  5126 
a code snip on how you are trying to use it would help. From my current
understanding here's what i think:
when you add objects to session they are added by value and not by
reference. ie one that you are refering to in you code is a local copy of
the object stored session.
any changes to the local copy would not be updated directly. you will need
to manually update the object in session.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:ed******** *****@tk2msftng p13.phx.gbl... A dataset is saved in session state. Then the dataset is filled out with
the
new records using a dataadapter. It appears then that the dataset saved in
session state contains the new records even without saving the updated
dataset.
Why does this happen? How can I preserve the dataset saved in session
state
from automatical updating?
Thank you.
Thank you Hermit. Here is my code.
SqlDataAdapter1 and DataSet11 are created in design time.
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim N0, N1, N2 As Int16, Str1, Str2 As String, DS As DataSet
Session("DS") = DataSet11
N0 = DataSet11.Table s(0).Rows.Count 'N0=0
SqlDataAdapter1 .Fill(DataSet11 )
DS = Session("DS")
N1 = DataSet11.Table s(0).Rows.Count 'N1=3
N2 = DS.Tables(0).Ro ws.Count 'N2=3
Str1 = DataSet11.Table s(0).Rows(1)(1) 'Str1="Other"
Str2 = DS.Tables(0).Ro ws(1)(1) 'Str2="Other"
End Sub
So, the dataset is saved in session state only once when it is empty. After
the dataset is filled out its saved copy has all the new records. What I
need and expected is that the dataset in session state keeps the old records
(remains empty in this case) when the real dataset is updated.
Vik
"Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in message
news:%2******** ********@TK2MSF TNGP11.phx.gbl. .. a code snip on how you are trying to use it would help. From my current
understanding here's what i think:
when you add objects to session they are added by value and not by
reference. ie one that you are refering to in you code is a local copy of
the object stored session.
any changes to the local copy would not be updated directly. you will need
to manually update the object in session.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:ed******** *****@tk2msftng p13.phx.gbl...A dataset is saved in session state. Then the dataset is filled out with
the
new records using a dataadapter. It appears then that the dataset saved
in session state contains the new records even without saving the updated
dataset.
Why does this happen? How can I preserve the dataset saved in session
state
from automatical updating?
Thank you.
i see what you mean now.
try using
Session("DS") = DataSet11.Copy( )
that way you are explicitly saving a copy. I will have a play around with
this later on.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:%2******** *******@TK2MSFT NGP11.phx.gbl.. . Thank you Hermit. Here is my code.
SqlDataAdapter1 and DataSet11 are created in design time.
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim N0, N1, N2 As Int16, Str1, Str2 As String, DS As DataSet
Session("DS") = DataSet11
N0 = DataSet11.Table s(0).Rows.Count 'N0=0
SqlDataAdapter1 .Fill(DataSet11 )
DS = Session("DS")
N1 = DataSet11.Table s(0).Rows.Count 'N1=3
N2 = DS.Tables(0).Ro ws.Count 'N2=3
Str1 = DataSet11.Table s(0).Rows(1)(1) 'Str1="Other"
Str2 = DS.Tables(0).Ro ws(1)(1) 'Str2="Other"
End Sub
So, the dataset is saved in session state only once when it is empty.
After
the dataset is filled out its saved copy has all the new records. What I
need and expected is that the dataset in session state keeps the old
records
(remains empty in this case) when the real dataset is updated.
Vik
"Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in message
news:%2******** ********@TK2MSF TNGP11.phx.gbl. .. a code snip on how you are trying to use it would help. From my current
understanding here's what i think:
when you add objects to session they are added by value and not by
reference. ie one that you are refering to in you code is a local copy of
the object stored session.
any changes to the local copy would not be updated directly. you will
need
to manually update the object in session.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:ed******** *****@tk2msftng p13.phx.gbl... >A dataset is saved in session state. Then the dataset is filled out with
>the
> new records using a dataadapter. It appears then that the dataset saved in > session state contains the new records even without saving the updated
> dataset.
>
> Why does this happen? How can I preserve the dataset saved in session
> state
> from automatical updating?
>
> Thank you.
>
>
Thank you. This works.
Vik
"Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in message
news:ey******** ******@tk2msftn gp13.phx.gbl... i see what you mean now.
try using
Session("DS") = DataSet11.Copy( )
that way you are explicitly saving a copy. I will have a play around with
this later on.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:%2******** *******@TK2MSFT NGP11.phx.gbl.. . Thank you Hermit. Here is my code.
SqlDataAdapter1 and DataSet11 are created in design time.
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim N0, N1, N2 As Int16, Str1, Str2 As String, DS As DataSet
Session("DS") = DataSet11
N0 = DataSet11.Table s(0).Rows.Count 'N0=0
SqlDataAdapter1 .Fill(DataSet11 )
DS = Session("DS")
N1 = DataSet11.Table s(0).Rows.Count 'N1=3
N2 = DS.Tables(0).Ro ws.Count 'N2=3
Str1 = DataSet11.Table s(0).Rows(1)(1) 'Str1="Other"
Str2 = DS.Tables(0).Ro ws(1)(1) 'Str2="Other"
End Sub
So, the dataset is saved in session state only once when it is empty.
After
the dataset is filled out its saved copy has all the new records. What I
need and expected is that the dataset in session state keeps the old
records
(remains empty in this case) when the real dataset is updated.
Vik
"Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in
message news:%2******** ********@TK2MSF TNGP11.phx.gbl. .. a code snip on how you are trying to use it would help. From my current
understanding here's what i think:
when you add objects to session they are added by value and not by
reference. ie one that you are refering to in you code is a local copy
of the object stored session.
any changes to the local copy would not be updated directly. you will
need
to manually update the object in session.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:ed******** *****@tk2msftng p13.phx.gbl...
>A dataset is saved in session state. Then the dataset is filled out
with >the
> new records using a dataadapter. It appears then that the dataset
saved in > session state contains the new records even without saving the
updated > dataset.
>
> Why does this happen? How can I preserve the dataset saved in session
> state
> from automatical updating?
>
> Thank you.
>
>
Is it possible to release memory occupied by a Session object? E.g. will
this work: Session("DS") = Nothing ?
Vik
"Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in message
news:ey******** ******@tk2msftn gp13.phx.gbl... i see what you mean now.
try using
Session("DS") = DataSet11.Copy( )
that way you are explicitly saving a copy. I will have a play around with
this later on.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:%2******** *******@TK2MSFT NGP11.phx.gbl.. . Thank you Hermit. Here is my code.
SqlDataAdapter1 and DataSet11 are created in design time.
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim N0, N1, N2 As Int16, Str1, Str2 As String, DS As DataSet
Session("DS") = DataSet11
N0 = DataSet11.Table s(0).Rows.Count 'N0=0
SqlDataAdapter1 .Fill(DataSet11 )
DS = Session("DS")
N1 = DataSet11.Table s(0).Rows.Count 'N1=3
N2 = DS.Tables(0).Ro ws.Count 'N2=3
Str1 = DataSet11.Table s(0).Rows(1)(1) 'Str1="Other"
Str2 = DS.Tables(0).Ro ws(1)(1) 'Str2="Other"
End Sub
So, the dataset is saved in session state only once when it is empty.
After
the dataset is filled out its saved copy has all the new records. What I
need and expected is that the dataset in session state keeps the old
records
(remains empty in this case) when the real dataset is updated.
Vik
"Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in
message news:%2******** ********@TK2MSF TNGP11.phx.gbl. .. a code snip on how you are trying to use it would help. From my current
understanding here's what i think:
when you add objects to session they are added by value and not by
reference. ie one that you are refering to in you code is a local copy
of the object stored session.
any changes to the local copy would not be updated directly. you will
need
to manually update the object in session.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:ed******** *****@tk2msftng p13.phx.gbl...
>A dataset is saved in session state. Then the dataset is filled out
with >the
> new records using a dataadapter. It appears then that the dataset
saved in > session state contains the new records even without saving the
updated > dataset.
>
> Why does this happen? How can I preserve the dataset saved in session
> state
> from automatical updating?
>
> Thank you.
>
>
you certainly can
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:uK******** ******@TK2MSFTN GP12.phx.gbl... Is it possible to release memory occupied by a Session object? E.g. will
this work: Session("DS") = Nothing ?
Vik
"Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in message
news:ey******** ******@tk2msftn gp13.phx.gbl... i see what you mean now.
try using
Session("DS") = DataSet11.Copy( )
that way you are explicitly saving a copy. I will have a play around with
this later on.
--
Regards,
HD
Once a Geek.... Always a Geek
"Vik" <viktorum@==hot mail.com==> wrote in message
news:%2******** *******@TK2MSFT NGP11.phx.gbl.. . > Thank you Hermit. Here is my code.
>
> SqlDataAdapter1 and DataSet11 are created in design time.
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArg s) Handles MyBase.Load
>
> 'Put user code to initialize the page here
>
> Dim N0, N1, N2 As Int16, Str1, Str2 As String, DS As DataSet
>
> Session("DS") = DataSet11
>
> N0 = DataSet11.Table s(0).Rows.Count 'N0=0
>
> SqlDataAdapter1 .Fill(DataSet11 )
>
> DS = Session("DS")
>
> N1 = DataSet11.Table s(0).Rows.Count 'N1=3
>
> N2 = DS.Tables(0).Ro ws.Count 'N2=3
>
> Str1 = DataSet11.Table s(0).Rows(1)(1) 'Str1="Other"
>
> Str2 = DS.Tables(0).Ro ws(1)(1) 'Str2="Other"
>
> End Sub
>
> So, the dataset is saved in session state only once when it is empty.
> After
> the dataset is filled out its saved copy has all the new records. What
> I
> need and expected is that the dataset in session state keeps the old
> records
> (remains empty in this case) when the real dataset is updated.
>
> Vik
>
> "Hermit Dave" <he************ @CAPS.AND.DOTS. hotmail.com> wrote in message > news:%2******** ********@TK2MSF TNGP11.phx.gbl. ..
>> a code snip on how you are trying to use it would help. From my
>> current
>> understanding here's what i think:
>>
>> when you add objects to session they are added by value and not by
>> reference. ie one that you are refering to in you code is a local copy of >> the object stored session.
>> any changes to the local copy would not be updated directly. you will
>> need
>> to manually update the object in session.
>>
>> --
>> Regards,
>> HD
>> Once a Geek.... Always a Geek
>> "Vik" <viktorum@==hot mail.com==> wrote in message
>> news:ed******** *****@tk2msftng p13.phx.gbl...
>> >A dataset is saved in session state. Then the dataset is filled out with >> >the
>> > new records using a dataadapter. It appears then that the dataset saved > in
>> > session state contains the new records even without saving the updated >> > dataset.
>> >
>> > Why does this happen? How can I preserve the dataset saved in
>> > session
>> > state
>> > from automatical updating?
>> >
>> > Thank you.
>> >
>> >
>>
>>
>
>
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