这叫做推荐，可以在HTTP请求中发送给你从另一页。方法如下： https://msdn.microsoft.com/en-us/ library / system.web.httprequest.urlreferrer.aspx [ ^ ]。

-SA

This is called "referred", can be sent to you in HTTP request coming from another page. Here is how: https://msdn.microsoft.com/en-us/library/system.web.httprequest.urlreferrer.aspx[^].

—SA