How does PHP crawl the data for. NET-developed paging controls?

such as in
http://121.28.49.84:8003/
The above page, select a business on the left, click on the top right of the "monitoring data", you can see it is used. NET control, it is difficult to simulate when monitoring network requests to find that the entire page is being sent back each time, with ViewState values. In addition, the UpdatePanel control is used instead of requesting data from other interfaces.
My goal is to automatically grab the right monitoring data, what can I do to crawl this page of all the data?
P.S. Server environment is lamp

Reply to discussion (solution)

He is Ajax get the data, you find that Ajax URL to connect, and other according to the parameters of the

His Ajax is using the UpdatePanel of the. NET control, actually to the current page itself to request, this will cause the entire page postback, not to request another interface address.
The ViewState is very complex and difficult to spell when asked for itself, and I'm not sure what the problem is if I submit it externally via PHP.

His Ajax is using the UpdatePanel of the. NET control, actually to the current page itself to request, this will cause the entire page postback, not to request another interface address.
The ViewState is very complex and difficult to spell when asked for itself, and I'm not sure what the problem is if I submit it externally via PHP.

Look at its return data to know, each time the returned data is submitted again.

Fetch the previous page, get the data at the same time to get the _viewstate and _e the beginning of the two values, get these two values to continue the next page crawl. There's no way to grab more threads. I don't know why Microsoft has such a silly ⅹ design. These two values are usually very long and server resources are saved, but wasting network resources can affect the user experience.

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