protected void guardarLinkButton_Click(object sender, EventArgs e)
        {
            this.alerta.Visible = false;

            if (cursoSeleccionado != null)
            {
                if (verificarNotas())
                {
                    InscripcionLogic il = new InscripcionLogic();

                    foreach (GridViewRow fila in gridView.Rows)
                    {
                        (fila.FindControl("txtNota") as TextBox).Enabled = false;

                        int ID   = int.Parse((fila.FindControl("lblID") as Label).Text);
                        int nota = int.Parse((fila.FindControl("txtNota") as TextBox).Text);

                        il.ActualizarNota(ID, nota);
                    }

                    this.guardarLinkButton.Visible          = false;
                    this.cancelarEdicionLinkButton.Visible  = false;
                    this.habilitarEdicionLinkButton.Visible = true;

                    this.textoAlerta.InnerText      = "Las notas han sido actualizadas";
                    this.alerta.Attributes["style"] = "background-color: #31DE35";
                    this.alerta.Visible             = true;
                }
                else
                {
                    this.textoAlerta.InnerText      = "La notas deben estar entre 0 y 10";
                    this.alerta.Attributes["style"] = "background-color: #EC3434";
                    this.alerta.Visible             = true;
                }
            }
            else
            {
                this.textoAlerta.InnerText      = "Seleccione un curso";
                this.alerta.Attributes["style"] = "background-color: #F0B435";
                this.alerta.Visible             = true;
            }
        }