Serialize XPathNavigator

[Bruce Sandeman]

Hi,
Does anyone know how to serialize an XPathNavigator object?
I have tried the following but it moans that the xpn does not have a parameterless
constructor.

XPathNavigator xpn = e.Source.Select SingleNode("/ns1:Invoice/ns1:InvoiceDeta il/ns1:Lines/ns1:Line/ns1:Matches/ns1:Match/ns1:SubLedger",
this.NamespaceM anager);

XmlSerializer x = new XmlSerializer(x pn.GetType());
StringWriter tw = new StringWriter();

x.Serialize(tw, xpn);
StringBuilder sbldr = tw.GetStringBui lder();

_tmpXML = sbldr.ToString( );

thanks very much
cheers
Bruce

[Marc Gravell]

Re: Serialize XPathNavigator

What are you actually trying to do? Persist the underlying xml? In which
case, .WriteSubtree(x mlWriter) may help.

If not, can you clarify your intent?

Marc

[Marc Gravell]

Re: Serialize XPathNavigator

Or possibly just .OuterXml?

[Dave Sexton]

Re: Serialize XPathNavigator

Hi Bruce,

You won't be able to serialize XPathNavigator directly because it's not marked as Serializable.

Why not just serialize the outer-xml of the particular node that you have selected in your example as a string?

If there are particular settings in the XPathNavigator that you want to retain you could create a class that encapsulates those
settings and mark it as [Serializable].

--
Dave Sexton

"Bruce Sandeman" <bruce@deltasch emenospam.comno spamwrote in message news:e1c4af035e 98c8bb4bb6ecf85 e@news.altohiwa y.com...

Hi,
Does anyone know how to serialize an XPathNavigator object?
I have tried the following but it moans that the xpn does not have a parameterless constructor.
>
XPathNavigator xpn =
e.Source.Select SingleNode("/ns1:Invoice/ns1:InvoiceDeta il/ns1:Lines/ns1:Line/ns1:Matches/ns1:Match/ns1:SubLedger",
this.NamespaceM anager);
XmlSerializer x = new XmlSerializer(x pn.GetType());
StringWriter tw = new StringWriter();
>
x.Serialize(tw, xpn);
StringBuilder sbldr = tw.GetStringBui lder();
>
_tmpXML = sbldr.ToString( );
>
thanks very much
cheers
Bruce
>
>

[Bruce Sandeman]

Re: Serialize XPathNavigator

Hi Dave,
Thanks, I will give that a go.

In response to Marc: I need the actual object to be serialized as it is a
reference to a particular element within a repeating group and I have no
way of knowing which instance I am in. (this is using InfoPath 2007).

cheers
Bruce

Hi Bruce,
>
You won't be able to serialize XPathNavigator directly because it's
not marked as Serializable.
>
Why not just serialize the outer-xml of the particular node that you
have selected in your example as a string?
>
If there are particular settings in the XPathNavigator that you want
to retain you could create a class that encapsulates those settings
and mark it as [Serializable].
>
"Bruce Sandeman" <bruce@deltasch emenospam.comno spamwrote in message
news:e1c4af035e 98c8bb4bb6ecf85 e@news.altohiwa y.com...
>

>Hi,
>Does anyone know how to serialize an XPathNavigator object?
>I have tried the following but it moans that the xpn does not have a
>parameterles s constructor.
>XPathNavigat or xpn =
>>
>e.Source.Selec tSingleNode("/ns1:Invoice/ns1:InvoiceDeta il/ns1:Lines/n
>s1:Line/ns1:Matches/ns1:Match/ns1:SubLedger",
>>
>this.Namespace Manager);
>>
>XmlSerialize r x = new XmlSerializer(x pn.GetType());
>>
>StringWriter tw = new StringWriter();
>>
>x.Serialize(tw , xpn);
>StringBuilde r sbldr = tw.GetStringBui lder();
>_tmpXML = sbldr.ToString( );
>>
>thanks very much
>cheers
>Bruce