private void bookList_CellEndEdit(object sender, DataGridViewCellEventArgs e) { string id = bookList.Rows[e.RowIndex].Cells["ID"].Value.ToString(); string title = bookList.Rows[e.RowIndex].Cells["title"].Value.ToString(); string author = bookList.Rows[e.RowIndex].Cells["author"].Value.ToString(); string isbn = bookList.Rows[e.RowIndex].Cells["isbn"].Value.ToString(); string genre = bookList.Rows[e.RowIndex].Cells["genre"].Value.ToString(); if (e.RowIndex % 2 == 0) { bookList.Rows[e.RowIndex].Cells[e.ColumnIndex].Style = bookList.RowsDefaultCellStyle; } else { bookList.Rows[e.RowIndex].Cells[e.ColumnIndex].Style = bookList.AlternatingRowsDefaultCellStyle; } BookControl bc = new BookControl(); bc.editBook(int.Parse(id), isbn, author, title, genre); MessageBox.Show(bc.Message); }