I can not find solution how to get control of other forms

[programercek]

In the first form Default.aspx I have TextBox1 control.
How do I get data from TextBox1 into another form Default2.aspx?

Is there any example on the Internet?

I have tried in this direction, but not a solution:

$ (Function () {
                        $ ('# Btn'). Click (function () {
                            $. Ajax ({
                                url: "Default.aspx/TextBox1"
                                data: "{}",
                                success: function (html) {
                                    $ ("# Results"). Html (html);

                                }
                            });


                        });
                    });

Data from TextBox1 I want to here "results" $ ("# results")

Please help because I can not find solutions.