Session.clear ans session.abandon

Sonia Gupta

i know the meaning now i implemented it in the project using the following code protected void Page_Load(object sender, EventArgs e) { Session["Sonia"] = "11"; Session["Sonia1"] = "12"; Session.Abandon(); foreach (string ste in Session.Keys) { Response.Write(ste + ":" + Session[ste]); } } initially i used the two session variables. if i use the session.clear() it leave me with 0 session count but the session vaiables remain the same if using the sesssion.abandon()

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Pete OHanlon

Session.Abandon lets you access the session variables until the page goes out of scope (e.g. you redirect the user to another page). Session.Clear removes the variables instantly.

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Guffa

Session.Abandon marks the Session object to be abandoned. When the current request is finished, the Session object will be removed, but it's available as long as the code is running. When the user makes another request, a new Session object will be created. Session.Clear only removes the session variables from the current Session object. The Session object itself will not be removed.

--- single minded; short sighted; long gone;

Sonia Gupta

i am using the following code Session["Sonia"] = "11"; Session["Sonia1"] = "12"; Session.Clear(); it renders the Session["Sonia"] and session["Sonia1"] to null. Session["Sonia"] = "11"; Session["Sonia1"] = "12"; Session.Abandon(); leaves the session["Sonia"] AND Session["Sonia"] AS IT IS. Is this what u mean to say.

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Pete OHanlon

Sonia Gupta wrote:

Session["Sonia"] = "11"; Session["Sonia1"] = "12"; Session.Abandon(); leaves the session["Sonia"] AND Session["Sonia"] AS IT IS. Is this what u mean to say.

This is correct. Once you leave the scope of the request, Session["Sonia"] and Session["Sonia1"] will be removed, but until then you can still access these variables.

Deja View - the feeling that you've seen this post before.

Sonia Gupta

but the fucntion session.clear() clears the session values not the session key. here session.clear() clears the session key as well, y this is happening

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Guffa

Sonia Gupta wrote:

i am using the following code Session["Sonia"] = "11"; Session["Sonia1"] = "12"; Session.Clear(); it renders the Session["Sonia"] and session["Sonia1"] to null.

Actually, it removed the items. If it would just set the items to null, the Session.Count property would still return 2, but clearing the session items makes it return 0.

Sonia Gupta wrote:

Session["Sonia"] = "11"; Session["Sonia1"] = "12"; Session.Abandon(); leaves the session["Sonia"] AND Session["Sonia"] AS IT IS.

Yes. The current session can't be removed until the current request is completed. That would be sawing off the branch you are sitting on.

--- single minded; short sighted; long gone;

Guffa

Sonia Gupta wrote:

but the fucntion session.clear() clears the session values not the session key.

No, it doesn't clear the values, it removes the items.

Sonia Gupta wrote:

here session.clear() clears the session key as well, y this is happening

The Session.Keys collection is a collection of the names in the Session.Items collection. As Session.Clear removes all the items in Session.Items, the Session.Keys collection also becomes empty.

--- single minded; short sighted; long gone;

Sonia Gupta

Guffa wrote:

can't be removed until the current request is completed

What's the meaning of this line. if u provide an example.

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Sonia Gupta

one thing i wanted to make clarification about is that session.abandon() does not remove the key or the value until we navigate to another page.Once the use navigates to another page , both the key and the value gets removed. and as far as the removing of session key and value is concerned , session.clear() method is sufficient , according to my understanding . Then What's the need of session.abandon()?

Sonia Gupta Soniagupta1@yahoo.co.in Yahoo messengerId-soniagupta1 Love is Friendship and Friendship is Love....

Pete OHanlon

Suppose that you want to continue working with the session in the context of the page, but you want the session to be cleared when you leave the page. If your page hosts another page in an iframe, then the inner page also has access to the session variable. This means that you can abandon the variable in the Page_Load, and still access it in the inner page.

Deja View - the feeling that you've seen this post before.

Sonia Gupta

session.abandon removes the key and the value. right?

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Pete OHanlon

Eventually yes.

Deja View - the feeling that you've seen this post before.

Virendrak

in, Session.Clear() Session key also remove. coz.. foreach (string ste in Session.Keys) { Response.Write(ste + ":" + Session[ste]); Response.Write("
"); } O/p is nothing.

Never Think That You Have Failed Instead Always Think That u hav Better Chance Next Time...

Virendrak

in, Session.Clear() Session key also remove. coz.. foreach (string ste in Session.Keys) { Response.Write(ste + ":" + Session[ste]); Response.Write("
"); } O/p is nothing.

Never Think That You Have Failed Instead Always Think That u hav Better Chance Next Time...

Pete OHanlon

What does this have to do with Session.Abandon removing the keys?

Deja View - the feeling that you've seen this post before.

Guffa

Sonia Gupta wrote:

session.abandon removes the key and the value. right?

No, it doesn't. It marks the Session object for removal. When the request finishes, the entire Session object is removed. The items are never removed from the Session object.

--- single minded; short sighted; long gone;