private void btnSave_Click(object sender, EventArgs e) { if (gridView1.RowCount != 0) { var dc = new ClassSRMDataContext(Config.connection); int id = (int)gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "Id"); dc.AddQuastion((int)cmbClass.EditValue, id, cmbBook.Text); gridView1.DeleteSelectedRows(); Hide(); Close(); PointBook.isQuastion = true; PointBook.bookIndex = cmbBook.SelectedIndex; PointBook.StudentId = id; PointBook.SchoolId = (int)cmbClass.EditValue; new PointBook().ShowDialog(); } }