Regenerate session id in asp.net

protected void ReGenerateSessionId()

        {

            SessionIDManager manager = new SessionIDManager();

            string oldId = manager.GetSessionID(Context);

            string newId = manager.CreateSessionID(Context);

            bool isAdd = false, isRedir = false;

           

            manager.RemoveSessionID(Context);

            manager.SaveSessionID(Context, newId, out isRedir, out isAdd);

            HttpApplication ctx = (HttpApplication)HttpContext.Current.ApplicationInstance;

            HttpModuleCollection mods = ctx.Modules;

            System.Web.SessionState.SessionStateModule ssm = (SessionStateModule)mods.Get("Session");

            System.Reflection.FieldInfo[] fields = ssm.GetType().GetFields(BindingFlags.NonPublic | BindingFlags.Instance);

            SessionStateStoreProviderBase store = null;

            System.Reflection.FieldInfo rqIdField = null, rqLockIdField = null, rqStateNotFoundField = null;

            SessionStateStoreData rqItem = null;

            foreach (System.Reflection.FieldInfo field in fields)

            {

                if (field.Name.Equals("_store")) store = (SessionStateStoreProviderBase)field.GetValue(ssm);

                if (field.Name.Equals("_rqId")) rqIdField = field;

                if (field.Name.Equals("_rqLockId")) rqLockIdField = field;

                if (field.Name.Equals("_rqSessionStateNotFound")) rqStateNotFoundField = field;

                if ((field.Name.Equals("_rqItem")))

                {

                    rqItem = (SessionStateStoreData)field.GetValue(ssm);

                }

            }

            object lockId = rqLockIdField.GetValue(ssm);

            if ((lockId != null) && (oldId != null))

            {

                store.RemoveItem(Context, oldId, lockId, rqItem);

            }

            rqStateNotFoundField.SetValue(ssm, true);

            rqIdField.SetValue(ssm, newId);

        }