IIS多个应用程序共享Session

IIS应用程序间的会话是隔离的。要实现不同应用程序之间的session共享，除了会话模式设置外，

在应用程序目录下面添加一个Global.asax文件，在文件中添加以下代码：

public override void Init()
        {
            base.Init();
            foreach (string moduleName in this.Modules)
            {
                string appName = "APPNAME";
                IHttpModule module = this.Modules[moduleName];
                SessionStateModule ssm = module as SessionStateModule;
                if (ssm != null)
                {
                    System.Reflection.FieldInfo storeInfo = typeof(SessionStateModule).GetField("_store", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
                    SessionStateStoreProviderBase store = (SessionStateStoreProviderBase)storeInfo.GetValue(ssm);
                    if (store == null)//In IIS7 Integrated mode, module.Init() is called later
                    {
                        System.Reflection.FieldInfo runtimeInfo = typeof(HttpRuntime).GetField("_theRuntime", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic);
                        HttpRuntime theRuntime = (HttpRuntime)runtimeInfo.GetValue(null);
                        System.Reflection.FieldInfo appNameInfo = typeof(HttpRuntime).GetField("_appDomainAppId", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
                        appNameInfo.SetValue(theRuntime, appName);
                    }
                    else
                    {
                        Type storeType = store.GetType();
                        if (storeType.Name.Equals("OutOfProcSessionStateStore"))
                        {
                            System.Reflection.FieldInfo uribaseInfo = storeType.GetField("s_uribase", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic);
                            uribaseInfo.SetValue(storeType, appName);
                        }
                    }
                }
            }
        }