Session GetValue

using System;
using System.Web;

public static class HttpSessionStateBaseExtensions
{
 public static T GetValue<T>(this HttpSessionStateBase session, string key)
 {
 return session.GetValue<T>(key, default(T));
 }

 public static T GetValue<T>(this HttpSessionStateBase session, string key, T defaultValue)
 {
 if (session[key] != null)
 {
 return (T)Convert.ChangeType(session[key], typeof(T));
 }

 return defaultValue;
 }
}

String value1 = Session.GetValue<String>("key1");
String value2 = Session.GetValue<String>("key2", "default text");

MyObject value3 = Session.GetValue<MyObject>("key3");
MyObject value4 = Session.GetValue<MyObject>("key4", new MyObject());