AerolineaFrba.Abm_Rol.Modificacion.iniciar C# (CSharp) Method

        private void iniciar()
        {
            txtRolSeleccionado.Text = "";
            lstFuncionalidadesActuales.Items.Clear();
            txtNombre.Enabled = false;
            txtNombre.Text = "";
            button6.Enabled = false;
            button3.Enabled = false;
            button2.Enabled = false;
            checkHabilitado.Enabled = false;
            checkHabilitado.Checked = false;
            lstFuncionalidadesTotales.Enabled = false;

            button1.Enabled = false;

            string queryselect = "SELECT FUNC_DESC FROM [ABSTRACCIONX4].[FUNCIONALIDADES]";
            SqlCommand command = new SqlCommand(queryselect, Program.conexion());
            command.CommandType = System.Data.CommandType.Text;
            command.CommandTimeout = 0;
            SqlDataAdapter a = new SqlDataAdapter(command);
            DataTable t = new DataTable();
            //Llenar el Dataset
            a.Fill(t);

            lstFuncionalidadesTotales.DisplayMember = "FUNC_DESC";
            lstFuncionalidadesTotales.DataSource = t;
        }