private void AddEmisor()
        {
            try
            {
                FContext = new FacturadorEntities1();
                var Formadepago = new TblFormadePago();

                Formadepago.FormadePago = this.txtFormadePago.Text;

                FContext.AddToTblFormadePagoes(Formadepago);

                FContext.SaveChanges();
                Response.Redirect("ListFormasdePago.aspx");
            }
            catch (Exception ex)
            {
                lblError.Text = "Ha Ocurrido un Error Al guardar La Compania: " + ex.Message;
            }
        }
        protected void GdFormasdePago_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            try
            {
                FContext = new FacturadorEntities1();
                var formadepago    = new TblFormadePago();
                int _idformadepago = Convert.ToInt32(this.GdFormasdePago.DataKeys[e.RowIndex].Value);

                formadepago = FContext.TblFormadePagoes.Single(Formadepago => Formadepago.PkFormadePagoId == _idformadepago);

                FContext.TblFormadePagoes.DeleteObject(formadepago);

                FContext.SaveChanges();
                Response.Redirect("ListFormasdePago.aspx");
            }
            catch (Exception ex)
            {
                lblError.Text = "Ha Ocurrido un Error Al Eliminar: " + ex.Message;
            }
        }
        private void EditEmisor()
        {
            try
            {
                FContext = new FacturadorEntities1();
                var FormadePago    = new TblFormadePago();
                int _idFormadepago = Convert.ToInt32(ViewState["IdFormadepago"]);

                FormadePago = FContext.TblFormadePagoes.Single(FP => FP.PkFormadePagoId == _idFormadepago);

                FormadePago.FormadePago = this.txtFormadePago.Text;

                FContext.SaveChanges();
                Response.Redirect("ListFormasdePago.aspx");
            }
            catch (Exception ex)
            {
                lblError.Text = "Ha Ocurrido un Error Al guardar La Compania: " + ex.Message;
            }
        }