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POASP.NET - Accessing web page twice from client
 

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    <p>What happens if one user tries to access an ASP.NET page twice before the first page is returned to the client? Have a look at the code below:</p> <pre><code>Partial Class _Default Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Session("ID") = 1 End Sub Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Response.Redirect("Default3.aspx") End Sub End Class Partial Class Default2 Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Session("ID") = 2 End Sub Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Response.Redirect("Default3.aspx") End Sub End Class Imports System.Threading Partial Class Default3 Inherits System.Web.UI.Page Dim intTest As Integer = 0 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load For intTest = 0 To 10 Response.Write(Session("ID") &amp; " " &amp; intTest &amp; "&lt;br&gt;") Thread.Sleep(1000) Next End Sub End Class </code></pre> <p>Accessing default3.axpx from the same client (PC) concurrently from default.aspx (by clicking button) and default2.aspx (by clicking button) causes the session variable to be the same on both requests (though I set the variable to 1 on the first request and 2 on the second). Is it possible to replicate this behaviour without threading? I believe I have this bug in an asp.net application that does not use threading.</p>
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    1. COYou are accessing the same session variable in both forms. That's why one gets overriden depending on the page you load last. You can add an array to a session.
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    2. CO@UNeverNo, can this behavior be simulated in a single threaded asp.net app? i.e. by removing the thread.sleep in default3.aspx?
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    3. COI don't know at the moment what you're going for. What do you want to test? Do you want to know what happens if a user submits the same page from two different tabs in the browser?
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