Session variable object deleted on postback - ASP.NET

Question

I did something like the following code:

protected void Page_Load(object sender, EventArgs e)
{
   Label1.Text = Session["loginid"].ToString();
}

protected void delete_click(object sender, EventArgs e)
{
    delete("mail1",Session["loginid"]);
}

private int delete(string mailid, string user)
{
 System.IO.Directory.Delete(Server.MapPath(@"~\files\" + user + @"\" + mailid), true);
}

When I click the delete button, everything works fine and the folder is deleted. but after that, when the page returns again, NullRefrenceException Label1.Text = Session ["loginid"] exception. ToString ();

Why is this happening...??

When I do not use this Directory.Delete () method, everything works fine and the session variables are not null.

When I traced my application, I found that after the Directory.Delete () method, the session variables were intact, and I was able to use these session variables in processing after Directory.Delete ().

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Answer 1

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Answer 2

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Web.config:

<configuration>
    <system.web>
        <sessionState mode="StateServer"></sessionState>
    </system.web>
</configuration>

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Answer 6

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• Use a tool such as Fiddler to check cookies exchanged between the browser and the web server during postbacks. Make sure that when a browser first visits a new session, a cookie is created and saved in the browser. Then, by deleting the folder, verify that the web server sends a new session cookie in response to this postback. This would mean that a new session was created.

thank