How can I store a value in a variable permanently?

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I have a case where I'm in a class and accessing a varibal from a different class but I could only access the varible on page load of this class. Once the page load is complete the value in the variable is gone. But i need to store the varible's value permanatly so that even after the page load is complete I need to use the value to do some activity.

My question is how to store the session state varible's value on page load, so that I may be able to use the value eventhough the page load is finished.

Can I get a complete code if possible please? I'm new to it.

Posted 25-Nov-11 5:07am

rajh7

Updated 25-Nov-11 7:18am

Karthik. A

v4

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Dylan Morley 25-Nov-11 11:53am

Moved content from other question:

rajh7: don't repost questions, just edit this question if you want to add extra details

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Dylan Morley · Answer 1 · 2011-11-25T05:50:00

Solution 3

You say page load so I'm assuming you're working in ASP.Net?

If it's just a small variable, such as a string or integer, consider storing the value in the users' session[^]. You can then retrieve the value from the session when you need to use it later

Posted 25-Nov-11 5:50am

Dylan Morley

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rajh7 25-Nov-11 12:10pm

Yea you are right is asp.net. i acesed a button in my class but in page load . I need to have it saved so that i want to use the button once the page is loaded. So Can I use the similar code like the one you just showed me. Now I dont know how to retrieve the value back.? How do i code?

_Zorro_ 25-Nov-11 12:19pm

You're only trying to validate your form? If yes, therer are other ways you should consider.

Nitesh Kejriwal · Answer 2 · 2011-11-25T06:06:00

Solution 4

If I get the question correct, you want to set the value on 1st page load and then access it on button clikc in postback. Use the below in page_load():

C#

if(!IsPostBack)
   Session("myval")=value;

On button click, you can get the value you have set as below:

C#

string val = Session("myval").ToString();

Posted 25-Nov-11 6:06am

Nitesh Kejriwal

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rajh7 25-Nov-11 12:21pm

Yea I checked and the button is already there when the page is loading. but once the page is loaded right ...what i mean is ok the page is up now i can see the page now right...now when i go check the button value in debugging mode its not there its null. here is my code

protected override void LoadToView(CaseStageDomObj caseStage)
{
if (Stage != null)
{
currentStageLit.Text = caseStage.StageLocale;
}

Button b = (Button)((ViewComplaint)Page).GetTheButtonFromPage();
button _button = b;
}

Nitesh Kejriwal 25-Nov-11 12:23pm

please post your complete code to see what is the error.

rajh7 25-Nov-11 12:56pm

protected override void LoadToView(CaseStageDomObj caseStage)
{
if (caseStage != null)
{
currentStageLit.Text = caseStage.StageLocale;
}

Button b = (Button)((ViewComplaint)Page).ReturnTheButton();
_button = b;

}

This is the page load code ok. when the page is being loaded the value of the button is disabled.i can check that with debug mode right. now after the page is loaded i want to set the button to enabled after some activities done in some other place . how do I do it? Just look at the button only please.

Nitesh Kejriwal 25-Nov-11 13:03pm

After you have done the processing, do you have any reference to the button? I am not sure you have it..Also, let me know if the button is in same page or masterpage or any control? If you can use Javascript, you can do enable the button via jQuery too.

rajh7 25-Nov-11 13:18pm

Yes you are right ..as soon as the page is loaded the button lost its state. it has null value. it had disabled value before by default. to my understanding the button is in the vew.aspx page. and i saw it in another place like protected global:: CNS.Web.Controls.Button transitionStageBtn; So I made a method in vew.aspx.cs( where button is available) that can return that button in user control class when i call it ok. now am at user control class and the method i made is returing the value successfully but only till the page is loading. after that its lot the value.

Nitesh Kejriwal 25-Nov-11 13:22pm

Reality is when you say after the page loads completely, you mean the last line of Page_Load()? I think so..try adding a bit of jQuery to enable the button on document.ready()

rajh7 25-Nov-11 13:41pm

to be simple enough what i meant was .after the pages is poped up and when we see the page ...now i want to do some work in the class and enable the button. any ways i done get the document.ready().

Nitesh Kejriwal 25-Nov-11 13:44pm

After the page has loaded completely, you are no more on server rather on client..so, none of server code will work. To make them work use AJAX..

did not get you regarding your comment on document.ready()

rajh7 25-Nov-11 14:18pm

anyways thanks a lot for your time i appreciate it.

Nitesh Kejriwal 25-Nov-11 14:20pm

You're welcome..tried to solve your issue..

_Zorro_ · Answer 3 · 2011-11-25T06:17:00

Solution 5

Hi,

Well, I'm not sure I understand.

What you describe seems impossible, could you tell us how are your classes structured?

How does the first class asks for the value stored in the other class? Is it a property?

Is it only the "variable" that gets "lost" or the class becomes null?

There are several ways to store data, (Cache, Session, Page items, Viewstate, etc.), but you shouldn't store what's not meant to. In this case, I think the problem is elsewhere.

Posted 25-Nov-11 6:17am

_Zorro_

Comments

rajh7 25-Nov-11 12:59pm

this is my code
protected override void LoadToView(CaseStageDomObj caseStage) { if (caseStage != null) { currentStageLit.Text = caseStage.StageLocale; } Button b = (Button)((ViewComplaint)Page).ReturnTheButton(); _button = b; } This is the page load code ok. when the page is being loaded the value of the button is disabled.i can check that with debug mode right. now after the page is loaded i want to set the button to enabled after some activities done in some other place . how do I do it? Just look at the button only please.

rajh7 25-Nov-11 13:03pm

Buttton is in the page and i accesed it in my user control class within the load method as i put it above. and i set the button to disable in the page already and when i check the button in my user control in page load its disable so good right...now i want to enable it after the page load is done...to do that i need to keep the state of the button right.

rajh7 25-Nov-11 14:19pm

Thanks for your time

_Zorro_ 25-Nov-11 21:41pm

Take a look at Nitesh Luharuka reply again, he's giving you the answer:

"After the page has loaded completely, you are no more on server rather on client..so, none of server code will work. To make them work use AJAX.."

It means either you do a postback or use client side code to do what you're looking to.

Paulo Zemek · Answer 4 · 2011-11-25T07:54:00

There are static variables.
ViewState
and Sessions.

static variables will be shared by all users. A global counter using Interlocked.Increment, for example.

ViewState and Sessions are usually seen as interchangeable, but they are not.
Imagine that the same user opens 2 windows/tabs of your site. Changing the value in session will affect the reload of both pages. ViewState, on the other side, is specific for each tab (for each "view" of your site).

Not Active · Answer 5 · 2011-11-25T05:20:00

Solution 1

Static Classes and Static Class Members[^]

Posted 25-Nov-11 5:20am

Not Active

Comments

_Zorro_ 25-Nov-11 12:06pm

I may be wrong, and if it's the case I apologize but how does a static property could help? How would you ensure each user will have it's own value if it's a static property?

[no name] 25-Nov-11 12:19pm

In your original question you didn't mention anything about multiple users or session state

_Zorro_ 25-Nov-11 12:25pm

I'm not who asked the question. You're right, he didn't mention anything about that...

How can I store a value in a variable permanently?

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