private void btnDangNhap_Click(object sender, EventArgs e)
{
this.Close();
FormDangNhap frm = new FormDangNhap();
frm.Show();
}
private void đăngNhậpToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
FormDangNhap frm = new FormDangNhap();
frm.Show();
}
private void btnDangXuat_Click(object sender, EventArgs e)
{
Program.usernamelogin = "";
this.Close();
FormDangNhap frm = new FormDangNhap();
frm.Show();
}
private void dangXuatToolStripMenuItem_Click(object sender, EventArgs e)
{
Program.usernamelogin = "";
this.Close();
FormDangNhap frm = new FormDangNhap();
frm.Show();
}