Trying to understand how server and browser handles events

Question

Hello I was trying to understand how ASP.net handles events. First off I don't actually know how to ask this question since I have no idea how this things works. When creating a page that utilizes javascript and ASP.net I realized that ASP.net handles events different than something like javascript would (obviously). I understand that Javascript handles events and arguments on the client-side but I do not know when and how ASP.net handles the events and arguments. An example of what I am trying to understand is; when I user press a button that runs the function on the code behind why does the page has to reload? Is the server executing the function? I was also interested in learning more about Sessions (cookies). When a sessions created is it been stored on the browser or the server? I appreciate any help. If anyone knows of a article I can read it would help me a lot. Thank you -- Jonathas

Manas Patnaik · Answer

First point you need to understand is Web is Stateless.Servers doesnot hold any information from client and treats each request as a new one.So when you click a serer side control (With Tag RunAtServer)  it sent request to server and execute the code behind logic.As it treat as new request the page loads again (PostBack). On your second question Sessions and cookies are two different things.Sessions are useful if you want to store any information about client/your program on server side while Cookies are at client side.Its a vast topic and i will suggest you to go with following link. http://msdn.microsoft.com/en-us/library/ms178581.aspx T hanks.

Jonathas Sucupira · Answer

Thank you.