What is ViewState?

I met ViewState when I was doing ASP, and I didn't know what he meant.

The data is saved on the current page.

Like sessions. is session-level. As long as the session does not expire. The data stored in the sessions is in.

ViewState are page-level. As long as this page is stored in. ViewState data.

This means that the data stored in ViewState can only be used in the page that declares the variable.

For example, in a page Page_Load declared: viewstate["test"]= "FDASFDSA";

Then you can use viewstate["test" in any of the methods in the page to get the value "FDSAFDSA" directly. Preliminary understanding, follow-up and add ......... .....

What is ViewState?