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I've seen developers use two approaches when they are done with a session object.
1) Session.Remove(key)
2) Session(key) = nothing
What is the better approach of the two above? Does Session.Remove dispose the object stored automatically?
Does the second approach depend on the garbage collector to actually free up the memory?
EDIT: Thanks for the responses, guys. Seems like Session.Remove is the correct way to go. However, if Session.Remove does not guarantee the disposal of object, then what is the best way to dispose the object stored in session when we do not need it further?
Thanks.
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Destroying a PHP Session A PHP session can be destroyed by session_destroy() function. This function does not need any argument and a single call can destroy all the session variables. If you want to destroy a single session variable then you can use unset() function to unset a session variable.
Answers. Morover put a breakpoint in the session and check the exact value of session after clearing.
You can set session variables in usual way using string as a key e.g. Session["Key"] = obj; To destroy the object in Session set it to null. Session["Key"] = null. you can clear the user session through the session.
Another way as you said is to use Session. Clear() method. But the best way is to set another irrelevant object (usually null value) in the session in correspondance to a key. For example, to nullify Session["FirstName"] , simply set it to Session["FirstName"] = null .
If you set the object to null or nothing, the key still exists in the Session even though the value is null.
This behaviour is the same as any other dictionary type classes in the CLR.
If you want to remove an object completely from the Session, you should use the Session.Remove("key") method.
It wont throw an exception if the key is not present in the Session.
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