当我使用 location.href 时，如何获取上一页 url？

Question

I have used location.href to redirect next page, but now i want to back to this page, how can I do? in my case, i cannot use Request.UrlReferrer.PathAndQuery, so any suggestion?

Answer 1

Since you are using location.href to change the URL, your browser is going to kick off a new request/response cycle. Thus to your server, there is no referrer - this is a whole new request.

The most direct approach to solve your problem would be to add a referrer-url parameter to your new URL, which you can then pick up on the server side.

eg: control.location.href = "newpage.aspx?referrer-url=thispage.aspx";

and on the server: string referrerUrl = Request["referrer-url"];

Answer 2

If the previous URL is one that you own/can predict (eg the user came from page A or page B), you could use a trick like this one: http://www.merchantos.com/blog/makebeta/tools/spyjax