how to add row to grid view one by one?c#

Question

hi,
iam working on windows application,in my form contains one text box and data gridview and one save button.when i enterd one item in text box and click save button then the record is saved in grid view first row.I know this way. but i want next time i entered second item in text box,click save button then the record is saved in gridviews second row.my requirement is in first row first record,second row second record both are displayed.but only one record displayed in grid view.how is both rtecord displayed.is it possible.plz help