carry textbox value

Question

hi all,
i working on a project and i have two forms form1 and form2, i would like to click a button button1 if form1 as below

Form2 form.Show();

form = new Form2();

to load form2 but i would like a value in textbox1 in form1 to appear in textbox1 of form2 when it loads.
could any on show me how to achieve this
thanks all and Best Regards