For Any Use & On Any Platform
Contextual Guidance at the moment of need helps your employees/users adopt software o& achieve even the most complex tasks instantly. Boost knowledge retention, software adoption & employee engagement with easy solution.
Course Of The Month
4 days, 5 hours left to enrollBecome a Premium Member and unlock a new, free course in leading technologies each month.
Solved
ViewState vs Session?
Posted on 2008-06-12
Kind of a novice question: if I create an instance of my own class and try to save it into the Session object, it works, but if I try to save it into my ViewState, then I get an error like "class x is not marked as serializable." For my edification, why is this?
Thanks very much...
Thanks very much...
[X]
Welcome to Experts Exchange
Add your voice to the tech community where 5M+ people just like you are talking about what matters.
- Help others & share knowledge
- Earn cash & points
- Learn & ask questions
4 Comments
Session is going to be more versatile. Though you can save other things into viewstate, it is generally used to preserve your control's state (ie: keep the same text in a box, same element in a dropdown selected) between postbacks.
Session State is somewhat unlimited in size (to a degree) but remember it uses memory on your serving machine, so overuse may be detrimental to performance -for this, keep in mind that each user has their own unique session; but this should only be a problem with a huge amount of users, or unusually large session variable storage.
Session State is somewhat unlimited in size (to a degree) but remember it uses memory on your serving machine, so overuse may be detrimental to performance -for this, keep in mind that each user has their own unique session; but this should only be a problem with a huge amount of users, or unusually large session variable storage.
On Serialization.
This has to do with how ViewState variables are passed betwixt server and client machines in byte format. Serialization is a process for saving data onto a file or memory buffer so a clone may be resurected latter, or (as in this case) so it may be transmitted across a network connection bytewise.
In ASP.Net, making a class Serializable is an extremely complicated task, involving adding the Serializable attribute to the class and... no, wait... that's it!
(Okay, there is a little more involved if you want to play around with advanced features, but the basics are all automated for you. Sweet!)
This has to do with how ViewState variables are passed betwixt server and client machines in byte format. Serialization is a process for saving data onto a file or memory buffer so a clone may be resurected latter, or (as in this case) so it may be transmitted across a network connection bytewise.
In ASP.Net, making a class Serializable is an extremely complicated task, involving adding the Serializable attribute to the class and... no, wait... that's it!
(Okay, there is a little more involved if you want to play around with advanced features, but the basics are all automated for you. Sweet!)
'VB Example
<Serializable()> Class Employee
// C# Example
[Serializable]
class Employee
if you want to save the class in ViewState, then
Add following attribute in class
[Serializable]
public class SomeWhat
{
}
or implement ISerializable interface in the class to be the class Serializable.
using System.Runtime.Serializabl
public class SomeWhat : ISerializable
{
}
then add this in to viewstate. okey.
Add following attribute in class
[Serializable]
public class SomeWhat
{
}
or implement ISerializable interface in the class to be the class Serializable.
using System.Runtime.Serializabl
public class SomeWhat : ISerializable
{
}
then add this in to viewstate. okey.
Featured Post
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
In this Article, I will provide a few tips in problem and solution manner.
Opening an ASPX page in Visual studio 2003 is very slow.
To make it fast, please do follow below steps:
Open the Solution/Project.
Right click the ASPX file to b…
Introduction
This article shows how to use the open source plupload control to upload multiple images. The images are resized on the client side before uploading and the upload is done in chunks.
Background
I had to provide a way for user…
In this video, viewers will be given step by step instructions on adjusting mouse, pointer and cursor visibility in Microsoft Windows 10. The video seeks to educate those who are struggling with the new Windows 10 Graphical User Interface.
Change Cu…
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
Suggested Courses
Course of the Month4 days, 5 hours left to enroll
691 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.