private void cbKhoa_SelectedIndexChanged(object sender, EventArgs e) { UtilityDB data = new UtilityDB(); string MaKhoa = cbKhoa.SelectedValue.ToString(); gvDanhSachLop.DataSource = data.getLop(MaKhoa, serverName, database, user, password); }
private void cbKhoa_SelectedIndexChanged(object sender, EventArgs e) { if (cbKhoa.SelectedIndex != -1) { UtilityDB data = new UtilityDB(); string MaKhoa = cbKhoa.SelectedValue.ToString(); gvLop.DataSource = data.getLop(MaKhoa); } }