protected void btnGravar_Click(object sender, EventArgs e)
    {
        EmailMkt em = new EmailMkt();

        em.Email = ValidParam.ValidarParametro(txtEmail.Text.Trim());
        em.Nome  = ValidParam.ValidarParametro(txtNome.Text.Trim());


        if (em.Existe(txtEmail.Text.Trim()) == true)
        {
            lblResultado.Text = "Já existe o e-mail";
        }
        else
        {
            if (lblCodigo.Text == "-")
            {
                em.Inserir();
            }
            else
            {
                em.Codigo = int.Parse(lblCodigo.Text);
                em.Atualizar();
            }
            Session["Data"]         = EmailMkt.Listar();
            gridEmailMkt.DataSource = Session["Data"];
            gridEmailMkt.DataBind();
            btnNovo_Click(sender, e);
        }
    }
    protected void btnExcluir_Click(object sender, ImageClickEventArgs e)
    {
        int      Codigo = int.Parse(((ImageButton)sender).CommandArgument);
        EmailMkt em     = new EmailMkt();

        em.Codigo = Codigo;
        em.Excluir();
        gridEmailMkt.DataSource = EmailMkt.Listar();
        gridEmailMkt.DataBind();
    }
 protected void Page_Load(object sender, EventArgs e)
 {
     if (Session["LOGADO"] == null)
     {
         Response.Redirect("Default.aspx");
     }
     ;
     Session["Data"]         = EmailMkt.Listar();
     gridEmailMkt.DataSource = Session["Data"];
     gridEmailMkt.DataBind();
 }