ASP.NET

<tr>
    <td class="style7" colspan="0">
        <asp:LinkButton ID="lbtn_reglas_negocio_ao0" runat="server" CausesValidation="False"
            Font-Underline="True" PostBackUrl="~/Pagina1.aspx"
            style="font-size: large">Consulta Ayudas de Oficina</asp:LinkButton>
    </td>
</tr>
<tr>
    <td class="style7" colspan="0">
        <asp:LinkButton ID="lbtnSalir" runat="server" CausesValidation="False"
            Font-Bold="True" Font-Overline="False" Font-Underline="True"
             style="font-size: large" onclientclick="window.close();">Salir</asp:LinkButton>
    </td>
</tr>

    private string ToUnicode(string val)
    {
        Encoding utf8 = Encoding.UTF8;
        Encoding unicode = Encoding.Unicode;
 
        byte[] utf8Bytes = utf8.GetBytes(val);
 
        byte[] unicodeBytes = Encoding.Convert(utf8, unicode, utf8Bytes);
 
        var result = ByteArrayToString(unicodeBytes);
        result = result.Substring(result.Length - 2, 2) + result.Substring(0, result.Length - 2);
        return result;
    }
 
    public static string ByteArrayToString(byte[] ba)
    {
        StringBuilder hex = new StringBuilder(ba.Length * 2);
        foreach (byte b in ba)
            hex.AppendFormat("{0:x2}", b);
        return hex.ToString();
    }