protected void btn_Subirnota_Click(object sender, EventArgs e)
{
if (ddl_alumno.SelectedValue == "0" || ddl_materia.SelectedValue == "0" || ddt_curso.SelectedValue == "0")
{
L_Error.Text = "Falta seleccionar";
}
else
{
DaoUser datos = new DaoUser();
EUser enc = new EUser();
enc.Id_estudiante = ddl_alumno.SelectedValue;
enc.Materia = ddl_materia.SelectedValue;
enc.Curso = ddt_curso.SelectedValue;
DataTable registros = datos.obtenerNota(enc);
enc.IdNota = registros.Rows[0]["id_nota"].ToString();
Double n1 = Convert.ToDouble(tb_nt.Text);
Double n2 = Convert.ToDouble(tb_nt2.Text);
Double n3 = Convert.ToDouble(tb_nt3.Text);
Double nd = (n1 + n2 + n3) / 3.0;
enc.Nota1 = n1.ToString();
enc.Nota2 = n2.ToString();
enc.Nota3 = n3.ToString();
enc.Notadef = nd.ToString();
tb_denifitiva.Text = nd.ToString();
datos.insertarNota(enc);
ButtonVerNota.Visible = false;
btn_Subirnota.Visible = true;
}
}