BLL.Metas.Listado C# (CSharp) Метод

        public override DataTable Listado(string Campos, string Condicion, string Orden)
        {
            string ordenFinal = "";

            if (!Orden.Equals(""))
                ordenFinal = " Order by " + Orden;
            return conexion.ObtenerDatos("Select " + Campos + " From Metas Where " + Condicion + " " + ordenFinal);
        }
    }

        protected void BuscarButton_Click1(object sender, EventArgs e)
        {
            int Id = 0;
            Metas meta = new Metas();
            if (ConsultaTextBox.Text.Length > 0 && ConsultaDropDownList.Text == "MetaId")
            {
                bool result = Int32.TryParse(ConsultaTextBox.Text, out Id);
                if (Id > 0)
                {
                    MetasGridView.DataSource = meta.Listado(" * ", " MetaId = " + Id, "");
                    MetasGridView.DataBind();
                    if (MetasGridView.Rows.Count <= 0)
                    {
                        ShowToast("error", "Error", "Id No Existe");
                        ConsultaTextBox.Text = "";
                        CargarGridView();
                    }

                }
                else
                {
                    ShowToast("warning", "Incorrecto", "Id Incorrecto");
                    ConsultaTextBox.Text = "";
                }

            }

            if (ConsultaDropDownList.Text == "Descripcion")
            {
                MetasGridView.DataSource = meta.Listado(" * ", "Descripcion like '" + ConsultaTextBox.Text + "%'", "");
                MetasGridView.DataBind();
            }
        }