Serialize XPathNavigator

  • Thread starter Thread starter Bruce Sandeman
  • Start date Start date
B

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.SelectSingleNode("/ns1:Invoice/ns1:InvoiceDetail/ns1:Lines/ns1:Line/ns1:Matches/ns1:Match/ns1:SubLedger",
this.NamespaceManager);

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

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

_tmpXML = sbldr.ToString();

thanks very much
cheers
Bruce
 
What are you actually trying to do? Persist the underlying xml? In which
case, .WriteSubtree(xmlWriter) may help.

If not, can you clarify your intent?

Marc
 
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].
 
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].

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.SelectSingleNode("/ns1:Invoice/ns1:InvoiceDetail/ns1:Lines/n
s1:Line/ns1:Matches/ns1:Match/ns1:SubLedger",

this.NamespaceManager);

XmlSerializer x = new XmlSerializer(xpn.GetType());

StringWriter tw = new StringWriter();

x.Serialize(tw, xpn);
StringBuilder sbldr = tw.GetStringBuilder();
_tmpXML = sbldr.ToString();

thanks very much
cheers
Bruce
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