Memperbaiki Data (Vb.Net 2008)

Sub perbaiki_data()

        Dim perbaiki As String = ("UPDATE kota SET nama='" & txt_nama_kota.Text & "',id_negara='" & combo_id_negara.Text & "' WHERE id_kota='" & txt_id_kota.Text & "'")

        Cmd = New Odbc.OdbcCommand(perbaiki, Conn)

        Cmd.ExecuteNonQuery()

        btn_simpan.Enabled = False

    End Sub