private void Inicializa()
    {
        btnEditar.Visible = false;
        if (Request.QueryString["nid_modelo"] != null)
        {
            Session["txh_nid_modelo"] = Request.QueryString["nid_modelo"];
        }
        txt_cod.Attributes.Add("onkeypress", "return SoloNumeros(event)");
        txt_nommod.Attributes.Add("onkeypress", "return SoloNumeros(event)");
        txt_kildefecto.Attributes.Add("onkeypress", "return SoloNumeros(event)");
        txt_kilservicio.Attributes.Add("onkeypress", "return SoloNumeros(event)");
        txt_minreservacita.Attributes.Add("onkeypress", "return SoloNumeros(event)");
        txt_perservicio.Attributes.Add("onkeypress", "return SoloNumeros(event)");
        CargarEntidad();
        try
        {
            string ind = Session["verdet_objEnt"].ToString();
            btnGrabar.Visible = false;
            btnEditar.Visible = true;
            txt_cod.Text      = objEnt.co_modelo.ToString().Trim();
            CargarMarcas();
            ddl_marca.SelectedItem.Text = objEnt.no_marca.ToString().Trim();
            txt_nommod.Text             = objEnt.no_modelo.ToString().Trim();
            CargarNegocios();
            ddl_negocio.SelectedValue = objEnt.co_negocio.ToString().Trim();
            objEnt.co_negocio         = ddl_negocio.SelectedValue.ToString().Trim();
            CargarFamiliaByNegocio(objEnt);
            ddl_familia.SelectedValue = objEnt.co_familia.ToString().Trim();

            string[] lista = new string[4];
            lista = objNeg.GETListarParamByModelo(objEnt);
            txt_kildefecto.Text     = (lista.GetValue(0) == null ? "" : lista.GetValue(0).ToString());
            txt_kilservicio.Text    = (lista.GetValue(1) == null ? "" : lista.GetValue(1).ToString());
            txt_perservicio.Text    = (lista.GetValue(2) == null ? "" : lista.GetValue(2).ToString());
            txt_minreservacita.Text = (lista.GetValue(3) == null ? "" : lista.GetValue(3).ToString());
            hid_nid_parametro.Value = (lista.GetValue(4) == null ? "" : lista.GetValue(4).ToString());
            p_DG.Enabled            = false;
            PP.Enabled = false;
        }
        catch (Exception)
        {
            string ind = Session["edidet_objEnt"].ToString();
            btnGrabar.Visible = true;
            txt_cod.Text      = objEnt.co_modelo.ToString().Trim();
            CargarMarcas();
            ddl_marca.SelectedItem.Text = objEnt.no_marca.ToString().Trim();
            txt_nommod.Text             = objEnt.no_modelo.ToString().Trim();
            CargarNegocios();
            ddl_negocio.SelectedValue = objEnt.co_negocio.ToString().Trim();
            objEnt.co_negocio         = ddl_negocio.SelectedValue.ToString().Trim();
            CargarFamiliaByNegocio(objEnt);
            ddl_familia.SelectedValue = objEnt.co_familia.ToString().Trim();

            string[] lista = new string[5];
            lista = objNeg.GETListarParamByModelo(objEnt);
            txt_kildefecto.Text     = (lista.GetValue(0) == null ? "" : lista.GetValue(0).ToString());
            txt_kilservicio.Text    = (lista.GetValue(1) == null ? "" : lista.GetValue(1).ToString());
            txt_perservicio.Text    = (lista.GetValue(2) == null ? "" : lista.GetValue(2).ToString());
            txt_minreservacita.Text = (lista.GetValue(3) == null ? "" : lista.GetValue(3).ToString());
            hid_nid_parametro.Value = (lista.GetValue(4) == null ? "" : lista.GetValue(4).ToString());
            p_DG.Enabled            = false;
            PP.Enabled = true;
        }
    }