private void btnAdd_Click(object sender, EventArgs e)
{
Hello = new Alumno(txnumCuenta.Text,txName.Text, cbGroup.SelectedItem + "",Convert.ToDouble(txProm.Text));
tvShow.Nodes[cbGroup.SelectedItem.ToString()].Nodes.Add(Hello.NumCuenta +"", Hello.ToString());
contAlumnos.Add(Hello.NumCuenta, Hello);
gBAlumno.Visible = false;
btnNewAlumno.Visible = true;
}
private void tvShow_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
string Key = e.Node.Name;
Hello = (Alumno)contAlumnos[Key];
gBAlumno.Visible = true;
txName.Text = Hello.Nombre;
txnumCuenta.Text = Hello.NumCuenta;
txProm.Text = Hello.Promedio + "";
cbGroup.Text = Hello.Grupo;
}