If there is one form1 with menu items and one textbox on it, textbox is public type,I click the menu item,
another form2 with a button pops up, and how could I point the textbox on form1,
because if I create such
form1 myform1 = new form1();
form1.textbox.Text = "test";
on form2 button events
it didn't work, because this myform1 is another memory copy of form1, so, what should I then?