private void btntracuu_Click(object sender, EventArgs e) { TraCuuChuyenBay f = new TraCuuChuyenBay(); f.Show(); }
private void traCứuChuyếnBayToolStripMenuItem_Click(object sender, EventArgs e) { TraCuuChuyenBay f = new TraCuuChuyenBay(); f.Show(); }