在同一表单上插入后刷新datagridview

I have a form with a datagridview and input boxes with a button to insert values. I would like the datagridview to refresh once the button is clicked. I have tried the datagridview.refresh() and datagridview.update options. The data only appears once the application has been closed and reopened. I have a form with a datagridview and input box