I am testing for how/when a page is posted back and I decided to use a
ViewState variable in PageLoad to set up a counter, but it appears,
the ViewState is cleared on each PageLoad. So then I used SESSION and
that worked.
Am I correct in assuming ViewState is cleared on each PageLoad or is my
code incorrect.
VIEWSTATE
If IsNothing(ViewS tate("PbCounter ")) Then
ViewState("PBCo unter") = 1
Else
ViewState("PBCo unter") = Session("PBCoun ter") + 1
End If
SESSION
If IsNothing(Sessi on("PbCounter") ) Then
Session("PBCoun ter") = 1
Else
Session("PBCoun ter") = Session("PBCoun ter") + 1
End If
Response.write( ViewState("PBCo unter").tostrin g) ALWAYS ONE
Response.write( Session("PBCoun ter").tostring ) INCREMENTS CORRECTLY
Thanks - Richard 6 1603
If this is really your code, then you are putting an empty Session
variable into the Viewstate.
VIEWSTATE
If IsNothing(ViewS tate("PbCounter ")) Then
ViewState("PBCo unter") = 1
Else
ViewState("PBCo unter") = Session("PBCoun ter") + 1 <<<<<<<
HERE
End If
Sorry Typo - with cut and paste, no it was correct in the actual code.
I did viewstate first and when it did not work I then changed it to
session.
ViewState is stored in a Page, and passed back and forth to the client via a
hidden form field. Session is stored in Server memory. Therefore, ViewState
is scoped to a Page, but only to the Page after PostBack, not when it is
initially loaded. Session State is scoped to a single user Session, and
transcends Pages.
--
HTH,
Kevin Spencer
Microsoft MVP
Professional Numbskull
Hard work is a medication for which
there is no placebo.
"mosscliffe " <pa***********@ googlemail.com> wrote in message
news:11******** ************@j7 3g2000cwa.googl egroups.com... I am testing for how/when a page is posted back and I decided to use a ViewState variable in PageLoad to set up a counter, but it appears, the ViewState is cleared on each PageLoad. So then I used SESSION and that worked.
Am I correct in assuming ViewState is cleared on each PageLoad or is my code incorrect.
VIEWSTATE If IsNothing(ViewS tate("PbCounter ")) Then
ViewState("PBCo unter") = 1 Else ViewState("PBCo unter") = Session("PBCoun ter") + 1 End If
SESSION If IsNothing(Sessi on("PbCounter") ) Then
Session("PBCoun ter") = 1 Else Session("PBCoun ter") = Session("PBCoun ter") + 1 End If
Response.write( ViewState("PBCo unter").tostrin g) ALWAYS ONE
Response.write( Session("PBCoun ter").tostring ) INCREMENTS CORRECTLY
Thanks - Richard
Eh?
On first page request you should be able to add custom values.
On postback you should be able to obtain it again.
Am i missing something here, i believe i thave tested this a while ago.
Of course a viewstate is bounded to a page but that could be welcome.
+ when using a master page you could tag stuff to multiple 'pages' (imo)
"Kevin Spencer" <ke***@DIESPAMM ERSDIEtakempis. com> schreef in bericht
news:ek******** ******@TK2MSFTN GP05.phx.gbl... ViewState is stored in a Page, and passed back and forth to the client via a hidden form field. Session is stored in Server memory. Therefore, ViewState is scoped to a Page, but only to the Page after PostBack, not when it is initially loaded. Session State is scoped to a single user Session, and transcends Pages.
-- HTH,
Kevin Spencer Microsoft MVP Professional Numbskull
Hard work is a medication for which there is no placebo.
"mosscliffe " <pa***********@ googlemail.com> wrote in message news:11******** ************@j7 3g2000cwa.googl egroups.com...I am testing for how/when a page is posted back and I decided to use a ViewState variable in PageLoad to set up a counter, but it appears, the ViewState is cleared on each PageLoad. So then I used SESSION and that worked.
Am I correct in assuming ViewState is cleared on each PageLoad or is my code incorrect.
VIEWSTATE If IsNothing(ViewS tate("PbCounter ")) Then
ViewState("PBCo unter") = 1 Else ViewState("PBCo unter") = Session("PBCoun ter") + 1 End If
SESSION If IsNothing(Sessi on("PbCounter") ) Then
Session("PBCoun ter") = 1 Else Session("PBCoun ter") = Session("PBCoun ter") + 1 End If
Response.write( ViewState("PBCo unter").tostrin g) ALWAYS ONE
Response.write( Session("PBCoun ter").tostring ) INCREMENTS CORRECTLY
Thanks - Richard
Yes, you can add values to it initially, but it is not stored. It is stored
in a hidden form field, which, when the page Posts Back, re-creates the
ViewState object from the field contents. In other words, if you add
something to a Page's ViewState, and navigate back to the same Page by any
means other then a PostBack, the ViewState will be empty.
--
HTH,
Kevin Spencer
Microsoft MVP
Professional Numbskull
Hard work is a medication for which
there is no placebo.
"Edwin Knoppert" <in**@pbsoft.sp eedlinq.nl> wrote in message
news:e3******** **@azure.qinip. net... Eh?
On first page request you should be able to add custom values. On postback you should be able to obtain it again. Am i missing something here, i believe i thave tested this a while ago. Of course a viewstate is bounded to a page but that could be welcome. + when using a master page you could tag stuff to multiple 'pages' (imo) "Kevin Spencer" <ke***@DIESPAMM ERSDIEtakempis. com> schreef in bericht news:ek******** ******@TK2MSFTN GP05.phx.gbl... ViewState is stored in a Page, and passed back and forth to the client via a hidden form field. Session is stored in Server memory. Therefore, ViewState is scoped to a Page, but only to the Page after PostBack, not when it is initially loaded. Session State is scoped to a single user Session, and transcends Pages.
-- HTH,
Kevin Spencer Microsoft MVP Professional Numbskull
Hard work is a medication for which there is no placebo.
"mosscliffe " <pa***********@ googlemail.com> wrote in message news:11******** ************@j7 3g2000cwa.googl egroups.com...I am testing for how/when a page is posted back and I decided to use a ViewState variable in PageLoad to set up a counter, but it appears, the ViewState is cleared on each PageLoad. So then I used SESSION and that worked.
Am I correct in assuming ViewState is cleared on each PageLoad or is my code incorrect.
VIEWSTATE If IsNothing(ViewS tate("PbCounter ")) Then
ViewState("PBCo unter") = 1 Else ViewState("PBCo unter") = Session("PBCoun ter") + 1 End If
SESSION If IsNothing(Sessi on("PbCounter") ) Then
Session("PBCoun ter") = 1 Else Session("PBCoun ter") = Session("PBCoun ter") + 1 End If
Response.write( ViewState("PBCo unter").tostrin g) ALWAYS ONE
Response.write( Session("PBCoun ter").tostring ) INCREMENTS CORRECTLY
Thanks - Richard
This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: neo |
last post by:
hi,
I am studying ASP.NET and have few questions -
1) The session ID and values of controls is stored in VIEWSTATE
variable. So now when we put EnableViewState="false" in Page directive and
disable the session state in Web.Config the VIEWSTATE variable is still
maintained and stores some values. Can anyone tell what those values are
for, i.e what other info is stored in VIEWSTATE other than the session ID
and the control values ?
|
by: Chuck Ritzke |
last post by:
Hi,
I've searched the newsgroup and other sources to understand how to handle
runtime controls and see I'm not the only one who's confused, but I'm still
not quite sure of the best way to handle from all the various
explanations/answers. I'm attempting the typical scenario...
I create a variable number of controls at runtime based on parameters from a
database.
|
by: clsmith66 |
last post by:
Is it possible to store the same information about a control that would be
saved in the ViewState in a Session state? I have a page with three treeview
controls and if I enable the view state for the controls I get huge delays on
postbacks, but if I disable the viewstate I lose all my information. Any
sugesstions?
|
by: Alex Nitulescu |
last post by:
Sorry, I'm really confused - I'm only at the middle of my book and already I
can count 4 methods to store values.
Yes, I know that cookies can not store much, but what is the difference
between storing data in the cache object, in a viewstate and in a Session.
I can say
Cache("MyData")=objDataSet
as well as
|
by: RCS |
last post by:
I have an app that I have different "sections" that I want to switch back
and forth from, all while having the server maintain viewstate for each
page. In other words, when I am on Page1.aspx and set textboxes, radio
buttons, etc - that viewstate is fine. Then I have a linkbutton that does a
Server.Transfer over to Page2.aspx. When I Server.Transfer back to
Page1.aspx, the viewstate info is lost.
I ran across another example of this last...
| |
by: Mark Broadbent |
last post by:
Been a while since I've touched asp.net but one thing that always seems to
fustrate me is the loss of state on variable declarations. Is there anyway
(i.e. assigning an attribute etc) to instruct the server to remember a
variables state *without* having to go through the rigmarole of saving and
loading to and from the Session state manually or similar workaround for any
Types (including custom types) in exactly the same way web controls...
|
by: Hugo Flores |
last post by:
Hi,
I'm trying to pass information between pages. I'm trying to avoid using
QueryString and Session variables. I saw somewhere that I could use
contxt.Items.Add (combined with Server.Transfer) to store my
information and send it to another page. Some of my pages, either go to
other pages, or postback depending on the situation. When I began to
get confused was when I saw that I needed to store my variables on the
viewstate if I wanted...
|
by: cheloman12 |
last post by:
Hi,
I posted this problem some days ago. I repeat it because it was no answered.
If description is confused, please make me know and i'll try to explain the
case better.
Thanks a lot, Marcelo
"I’m implementing SavePageStateToPersistenceMedium and
LoadPageStateFromPersistenceMedium in asp.net 2.0 to increment performance
|
by: digbydog |
last post by:
Hello,
I am a bit confused with viewstate - am trying to use viewstate to hold a
boolean value which is false initially and then gets set to true after a
certain event.
I had the following
Class
....
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
| |
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| |
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |