private void cerrarSesionToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
logueo1 l1 = new logueo1();
l1.Show();
}
public logueo2(logueo1 anterior, Usuario newuser)
{
InitializeComponent();
this.formanterior = anterior;
DataTable dt = new DataTable("Roles");
new Rolsql().obtenerRoles(newuser).Fill(dt);
cbRoles.DataSource = dt;
cbRoles.ValueMember = "idrol";
cbRoles.DisplayMember = "nombre";
unusuario = newuser;
}