Question

In my C# codebehind file(.cs), I have just one class and it is derived from System.Web.UI.Page. The class contains array of dictionaries. On one of the button clicks i.e. in the button click event handler function, I create object of this class and do something. Now, on another button click, I need to do something else which needs data belonging to the object or instance of the class created on previous button click. How can I achieve this? I need all the data especially array of dictionaries belonging to that object/class instance.

Answer 1

HTTP is stateless. So there is no direct way to do this.

What you can do is keep this in some storage mechanism and access it later. You may consider DB table, Session etc…

Here is an example to store in Session

 YourClass object1=new YourClass();
 object1.SomeProperty="HTTP is stateless"; 
 Session["ThatObject"]=object1;

You can access this in the next button click event like this

 if(Session["ThatObject"]!=null)
 {
   YourClass object1=(YourClass) Session["ThatObject"];
   //now you can access object1 properties here.
 }

It is not a good idea to store so many items in session as it will make your server cry since sessions stored in server.