How to use query string to pass values in ASP.NET

(1)  You can save the values to a database or file and then recall them on another page.

(2)  You can save the values in Session data and then recall them on another page.

(3)  You can use a query string.

The most common solution is probably Session data.  You save like this: 

Session("Value 1") = value1;

You retrieve like this:

string value1 = Session("Value1");

There's more to it than that.  Lots of options about how Session is saved, how long it's saved, etc.  You may need to do some reading.

 Different Ways to Pass Data between Web Forms