FormsAuthentication.SetAuthCookie(UserFlag, createPersistentCookie);
createPersistentCookie是否永久保存cookie
https://www.cnblogs.com/joeylee/p/3521131.html
FormsAuthentication.SetAuthCookie(UserFlag, createPersistentCookie);
createPersistentCookie是否永久保存cookie
https://www.cnblogs.com/joeylee/p/3521131.html