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    <p>Instead of using constants for the session keys, I'm using my own type-safe session object, which looks like this (sorry this is in C#, see below for a VB version):</p> <pre><code>public class MySession { // Private constructor (use MySession.Current to access the current instance). private MySession() {} // Gets the current session. public static MySession Current { get { MySession session = HttpContext.Current.Session["__MySession__"] as MySession; if (session == null) { session = new MySession(); HttpContext.Current.Session["__MySession__"] = session; } return session; } } // My session data goes here: public string MyString { get; set; }; public bool MyFlag { get; set; }; public int MyNumber { get; set; }; } </code></pre> <p>Whenever I need to read/write something to/from the session, I can use my typesafe session object like this:</p> <pre><code>string s = MySession.Current.MyString; s = "new value"; MySession.Current.MyString = s; </code></pre> <p>This solution results in several advantages:</p> <ul> <li>I have a typesafe Session (no more type-casts)</li> <li>I can document all session based data (by commenting the public properties in MySession)</li> <li>When adding a new element to the session, I don't have to search the solution to check if the same session-key was already used somewhere else.</li> </ul> <p><strong>Update:</strong> Here's a VB version (automatically converted from the C# version). Sorry, but I don't know VB and so I didn't know how to write the properties in VB:</p> <pre><code>Public Class MySession ' Private constructor (use MySession.Current to access the current instance). Private Sub New() End Sub ' Gets the current session. Public Shared ReadOnly Property Current() As MySession Get Dim session As MySession = TryCast(HttpContext.Current.Session("__MySession__"), MySession) If session = Nothing Then session = New MySession() HttpContext.Current.Session("__MySession__") = session End If Return session End Get End Property ' My session data goes here: Public MyString As String Public MyFlag As Boolean Public MyNumber As Integer End Class </code></pre>
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    1. POis it a good idea to create an enum for the key names of session values?
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    1. COThis is clean and simple. I like it.
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    2. COPerhaps post a VB version for Fredou.
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    3. COThe downside of this approach is that you do not offer an IEnumerable implementation, but one could argue that it should not be needed except for complex types that are stored as lists of some sort.
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