How to use public variable which used in whole ASP.NET web application

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Hi All,
How to use public variable in Asp.NET with vb, in my web application i have class fils,aspx and asmx file, in this all pages i need access one public variable which i assign when user login, if i use session i cant access in asmx and class files, if i declare public variable in class file once page refresh it clear the assign values and became empty.

i want assign public variable with values and access in whole application until user logout, and once assign values when login it never change.

This is for connection sting , i know can declare in web conig, but we create each sql login for each and every user, so when user login we pass username to sql User ID

What I have tried:

For now i declare static variable and used in same page itself.If asp page no problem, but from class and asmx i need to each function connection strings.

Regards,
Aravind

Posted 30-Jan-19 19:07pm

Aravindba

Updated 4-Feb-19 8:36am

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OriginalGriff · Accepted Answer · 2019-01-30T21:59:00

Here's the problem: unless you use the Session or Cookies (or a query string if you are desperate) you can't store more than one UserId per app: and the app is shared among users on the same web server, so using a single public variable (which would have to be Shared if you want to access it without the page class instance) is not going to work as you need multiple ones.

The best way to handle this is to use the session in your page, and pass the UserID from that to subsequent code. You probably shouldn't be using session specific data in your asmx page anyway, it's not a sign of good app design as they are intended for Web Services, not direct user interaction!

Richard Deeming · Accepted Answer · 2019-02-04T08:37:00

It's quite possible to use session state from an .asmx service:

c# - Getting session in .NET ASMX web-service - Stack Overflow[^]:

C#
[WebMethod(EnableSession = true)]
public string checkSession()
{
    return HttpContext.Current.Session.SessionID;
}

As for class files, you should add the session value as a parameter to any methods that need it, and pass it in from your page / service.

How to use public variable which used in whole ASP.NET web application

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