protected void BT_Canje_Click(object sender, EventArgs e)
{
LUser datos = new LUser();
int Id = int.Parse(Session["user_id"].ToString());
DataTable data = datos.redimir(Id);
Button btn = (Button)sender;
DataListItem item = (DataListItem)btn.NamingContainer;
Label lblid = (Label)item.FindControl("Label1");
int x = int.Parse(lblid.Text);
datos.cortesia(x);
this.RegisterStartupScript("mensaje", "<script type='text/javascript'>alert('Reservado');window.location=\"Resrvas.aspx\"</script>");
}