private void giớiThiệuPhầnMềmToolStripMenuItem_Click(object sender, EventArgs e)
{
Form GT = new frmGioiThieu();
GT.ShowDialog();
}
private void pictureBox3_Click(object sender, EventArgs e)
{
Form GT = new frmGioiThieu();
GT.ShowDialog();
}
private void toolStripMenuItem18_Click(object sender, EventArgs e)
{
Form GT = new frmGioiThieu();
GT.ShowDialog();
}