Size of Asp.Net Session Object

Since the past couple of days, I've been trying to determine a way to find out the size of a session object. Although this does not give an accurate picture of the size, it gives a decently rough estimate.

         long totalSessionBytes;
         System.Runtime.Serialization.Formatters.Binary.BinaryFormatter b = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
         System.IO.MemoryStream m = new System.IO.MemoryStream();
         b.Serialize(m, UserData);
         totalSessionBytes = m.Length;

Of course, there are some profilers that can be used such as the following:

• CLR Profiler
• Eqatec

However, I think for my current purpose, the above code is good.