title: Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound
body: <p>I have a grid and when data is loaded in grid; I simply select a row and press edit button. On edit, new sub form is opened and values of row's cells are passed to controls on sub form. But, when I change some values on sub form and save them to be replaces in grid the error comes to me: <strong>Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound</strong>. What is cause of this error and how to overcome this.</p>