Difference between Application and Session State.

Application state will be available to all users of the application when set
Basically user A sets application variable "AppID" to "myApp"
User B retrieves application variable "AppID" and reads "myApp"



Session state will only be available to a specific user of the ASP.net application

User A sets session variable "UserID" to "2"
User B loads the session variable "UserID" and receives null
User A loads the session variable "UserID" and receives "2"

The main difference is that application is common for the whole application and session is different for different user,other wise both are same

Application["samp"] = "something";
Session["samp"] = "something";

Quick'n'dirty answer:

Application State has scope throughout the application whilst Session State only has scope within the current session.

Session state is unique to the client

where as

Application state is sharable among the clients

Google is your friend.

https://www.google.com/search?q=application+vs+session+state&rls=com.microsoft:en-GB&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1&hl=en[^]

Session variable are only available at the user level means no user can access the other user session variables.


Application variable is available at application level means every user of the application can access the same application variable.

i am giving you a link it will give you brief idea of caching concept

Exploring Session in ASP.NET[^]

best of luck!